Chloride report_Completed lab_Rafaella Dias

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OCC433: LABORATORY PROJECT 5: ANALYSIS OF HYDROGEN CHLORIDE IN WORKPLACE ATMOSPHERES First Name: Rafaella Surname: Frazao Ribeiro Venancio Dias Date: March 9, 2020. Partners: Taeeun Kim Juan Padolina

Purpose: (2 marks) To detect hydrogen chloride in a workplace environment by pumping air in a silica gel (solid sorbent) and analyze the desorbed sample using an ion electrode detector to detect the chloride ions. Treatment of Data 1. Place all of your analytical data into the following table: Title: Collected data of chloride samples using Accumet Excel meter to measure the conductivity based on millivolts. Solution Reading (mV) 1.0 ppm 175 2.0 ppm 160 3.0 ppm 155 4.0 ppm 148 5.0 ppm 143 6.0 ppm 139 8.0 ppm 134 10.0 ppm 128 12.0 ppm 124 15.0 ppm 119 20.0 ppm 111 U#1 (Silica Gel Front) #28 151 U#1 (Silica Gel Back) #28 161 DE Blank 184 DE 10 146 DE 20 131 Solution Unknown # A13 100

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2.

Prepare a fully documented graph of the calibration curve (plot "Potential (mV)" versus Log[Cl-]) and attach to your report. This graph is to be done using Excel. Be sure to provide a trendline, formula & R2 value). Determine the linear working range (in units of concentration) of chloride. (4 marks)

Graph 1: Data of chloride samples using Accumet Excel meter to measure the conductivity based on millivolts. 180

Conductivity (mV)

170 160 y = -48.465x + 176.28 R² = 0.9955

150 140 130 120 110 100 0.00

0.20

0.40

0.60

Log

3.

0.80

1.00

1.20

[Cl-]

Using your trendline formula, determine the concentration of chloride in each solution (those listed in question 1) and then convert this to the concentration of hydrogen chloride.

Title: Concentration of chloride in tested samples based on the trendline formula generated using standard samples as parameters. Solution Chloride Hydrogen Chloride Total Mass of (ppm) (ppm) Hydrogen Chloride (g) (from your graph in the original sample of formula) gel DE Blank 0 0 0 DE 10 4.21 4.33 433 DE 20 8.60 8.84 884 U#1 (Silica Gel#28) 0.522 0.536 53.6 Solution Unknown 37.5 38.6 -------------------------

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Show in detail the calculation that you used to determine the amount of hydrogen chloride in sample DE 10. (2 marks) First is necessary to calculate the concentration of chloride using the trendline formula: 𝑦 = −48.465𝑥 + 176.28 ∴ 𝑥 = 𝑥=

-y + 176.28 48.465

-146 + 176.28 48.465

𝑥 = 0.624780769 x value represents the log of [Cl-], to find the ppm is necessary to take the 10x 10𝑥 = 4.214836862 ∴ 4.21 𝑝𝑝𝑚 Then, is necessary to determine the percentage of Cl- on HCl: 35.453 𝑔⁄𝑚𝑜𝑙 𝑥100% = 97.24% 36.461 𝑔⁄𝑚𝑜𝑙 Finally, by knowing that there are 4.21 ppm of chloride in the sample, and it represents 97.24% of HCl, the concentration of HCl is: 4.21 𝑝𝑝𝑚 4.21 𝑝𝑝𝑚 𝑥 100 % 𝑥 100% = 97.24% ∴ [𝐻𝐶𝑙] = = 4.329494035 𝑝𝑝𝑚 [𝐻𝐶𝑙] 97.24%

Show in detail the calculation that you used to determine the total mass of hydrogen chloride (g) in sample DE 10. (2 marks) 𝑝𝑝𝑚 =

𝜇𝑔 𝜇𝑔 ∴ 4.329494035 𝑝𝑝𝑚 = 4.329494035 𝑚𝐿 𝑚𝐿

Hence, the concentration in µg of HCl in 50 mL solution is 4.329494035 𝜇𝑔 𝑥 50 𝑚𝐿 = 216.47 𝜇𝑔 𝑚𝐿 However, as only 5 mL of the 10 mL desorbed solution was added to this 50 mL, this mass needs to be doubled: 216.47 𝜇𝑔 𝑥 2 = 432 𝜇𝑔

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Report the concentration of your unknown liquid solution (in ppm) and show all calculations. (8 marks) Unknown A13 𝑝𝑝𝑚 =

𝜇𝑔 𝜇𝑔 ∴ 37.5 𝑝𝑝𝑚 = 37.5 𝑚𝐿 𝑚𝐿

Hence, the concentration in µg of HCl in 50 mL solution is 37.5 𝜇𝑔 𝑥 50 𝑚𝐿 = 1 875 𝜇𝑔 𝑚𝐿 However, as only 5 mL of the 10 mL desorbed solution was added to this 50 mL, this mass needs to be doubled: 1 875 𝜇𝑔 𝑥 2 = 3 750 𝜇𝑔 4.

During the desorption study, you used 10, and 20 μL of 10% hydrogen chloride. Determine the theoretical total number of micrograms of hydrogen chloride in each of these volumes.

Title: Theoretical mass of HCl in desorbed solutions using 10% hydrogen chloride. Solution Theoretical Mass of Hydrogen Chloride (g) DE 10 437.5 DE 20 875.1 Show in detail the calculation that you used to determine the theoretical mass of hydrogen chloride in sample DE 10. (2 marks) HCl molar mass: 36.461 g/mol | Cl- molar mass: 35.453 g/mol | H+ molar mass: 1.008 g/mol

100% HCl Acid = 12 N ∴ 10% 12 𝑁 𝑥 10 𝑚𝑜𝑙 = 1.2 𝑁 = 1.2 ∴ 1.2 𝑚𝑜𝑙 ⁄𝐿 𝑥 36.461 𝑔⁄𝑚𝑜𝑙 = 43.753 𝑔⁄𝐿 100 𝐿 43.753 𝑔 106 𝜇𝑔 𝐿 𝑥 𝑥 = 43.753 𝑥 103 𝜇𝑔⁄𝑚𝐿 ∴ 43.753 𝑥 103 𝑝𝑝𝑚 𝐿 𝑔 1000 𝑚𝐿 So, if in 1 mL (1000 µL) of solution contains 43.753 x 103 µg, as the DE 10 sample contains 10µL:

(43.753 𝑥 103 𝜇𝑔)𝑥(10𝜇𝐿) = 437.53 𝜇𝑔 1000 𝜇𝐿

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5.

Calculation of desorption efficiencies.

Title: Desorption efficiency of desorbing samples using theoretical and actual masses as parameter. Sample

Theoretical Mass of Hydrogen Chloride (μg)

Actual Mass of Hydrogen Chloride that was Recovered (μg)

Desorption Efficiency

DE 10

437.53

433

98.96%

DE 20

875.06

884 101.02% Average Desorption Efficiency: 99.98%

Show in detail the calculation that you used to determine the "Desorption Efficiency" for DE 10. (2 marks) DE 10 masses of hydrogen chloride – theoretical mass of 437.53 μg – actual mass of 433 μg Therefore: 𝐷𝑒𝑠𝑜𝑟𝑝𝑡𝑖𝑜𝑛 𝐸𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑐𝑦 =

𝐴𝑐𝑡𝑢𝑎𝑙 𝑀𝑎𝑠𝑠 𝑅𝑒𝑐𝑜𝑣𝑒𝑟𝑒𝑑 𝑥 100% 𝑇ℎ𝑒𝑜𝑟𝑒𝑡𝑖𝑐𝑎𝑙 𝑀𝑎𝑠𝑠 𝑅𝑒𝑐𝑜𝑣𝑒𝑟𝑒𝑑

𝐷𝑒𝑠𝑜𝑟𝑝𝑡𝑖𝑜𝑛 𝐸𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑐𝑦 =

433 𝜇𝑔 𝑥 100% 437.53 𝜇𝑔

𝑫𝒆𝒔𝒐𝒓𝒑𝒕𝒊𝒐𝒏 𝑬𝒇𝒇𝒊𝒄𝒊𝒆𝒏𝒄𝒚 = 𝟗𝟖. 𝟗𝟔% 6.

In question #3 you calculated the mass of hydrogen chloride in the unknown silica gel sample. You must now correct this value for the desorption efficiency.

Title: Corrected value of HCL mass based on calculated desorption efficiency. Silica Gel Unknown #:28 Mass of Hydrogen Chloride Recovered Corrected Mass of Hydrogen Chloride (g) (g) 5.36 x 10-3 5.36 x 10-3

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Show your calculations for the spiked silica gel unknown, where corrected mass = (mass recovered/desorption efficiency) (5 marks) 𝐶𝑜𝑟𝑟𝑒𝑐𝑡𝑒𝑑 𝑀𝑎𝑠𝑠 =

𝑀𝑎𝑠𝑠 𝑅𝑒𝑐𝑜𝑣𝑒𝑟𝑒𝑑 𝐷𝑒𝑠𝑜𝑟𝑝𝑡𝑖𝑜𝑛 𝐸𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑐𝑦

𝐶𝑜𝑟𝑟𝑒𝑐𝑡𝑒𝑑 𝑀𝑎𝑠𝑠 =

0.00536 𝜇𝑔 0.9998

𝐶𝑜𝑟𝑟𝑒𝑐𝑡𝑒𝑑 𝑀𝑎𝑠𝑠 = 0.00536 𝜇𝑔 𝑪𝒐𝒓𝒓𝒆𝒄𝒕𝒆𝒅 𝑴𝒂𝒔𝒔 = 𝟓. 𝟑𝟔 × 𝟏𝟎−𝟑 𝝁𝒈 7.

What is the concentration of hydrogen chloride in the workplace, in mg/m3, if 110 litres of air were sampled? Show all calculations. (assume NTP) (4 marks) 𝑀𝑎𝑠𝑠 𝑜𝑓 𝐻𝐶𝑙 = 5.36 × 10−3 𝜇𝑔 𝑀𝑎𝑠𝑠 𝑜𝑓 𝐻𝐶𝑙 5.36 × 10−3 𝜇𝑔 𝐶𝑜𝑛𝑐𝑒𝑛𝑡𝑟𝑎𝑡𝑖𝑜𝑛 𝑜𝑓 𝐻𝐶𝑙 = ∴ = 4.87 × 10−5 𝜇𝑔⁄𝐿 𝑉𝑜𝑙𝑢𝑚𝑒 𝑜𝑓 𝐴𝑖𝑟 110 𝐿 𝑪𝒐𝒏𝒄𝒆𝒏𝒕𝒓𝒂𝒕𝒊𝒐𝒏 𝒐𝒇 𝑯𝑪𝒍 = 𝟒. 𝟖𝟕 × 𝟏𝟎−𝟓 𝒎𝒈⁄𝒎𝟑

8.

State one significant source of error for each of the following parts of the experiment. (9 marks total)

a)

Serious errors that could occur during the preparation of the unknown silica gel sample are:

Accidentally or intentionally shaking or swirling the vial after being heated. This would cause the pipette clog when the sample is being taken and would affect the analysis. b)

Serious errors that could occur during the desorption study are:

Lose some silica when collecting it from the sorbent tube. It would cause a misinterpretation of the results, showing a lower concentration than the actual one.

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c)

Serious errors that could occur during the analysis of standards and samples are:

Not carefully cleaning the probe between the readings. It would dilute the samples giving a lower concentration, and wrong results. (A physical damage could happen with the probe if the stir bar hits it, however, it is not would affect the results of the experiment per se, ‘only’ the laboratory budget) 9.

Attach to the report SDS for the following agents: •

Hydrogen Chloride gas (NOT liquid)

NOTE: If the SDS sheet you find is excessively long, only attached the first page. For this component, create a table briefly summarizing the following information (5 marks for each agent – 5 marks total): • Personal Exposure Limit (PEL) values

• Main Route of Exposure • Symptoms of Exposure & First Aid Measures

ACGIH – 2 ppm OSHA (ceiling) (mg/m3) – 7 mg/m3 OSHA (ceiling) (ppm) – 5 ppm IDLH – 50 ppm Respirator protection program meeting the OSHA 29 CFR 1910.134 requirements. Or an air supplied /air-purifying cartridge when the exposure level is exceeded; Neoprene rubber for hands; Vapor-proof safety goggles; Close shoes; Handle it on a fume hood. Inhalation. After inhalation – Remove to fresh air and keep at rest in a position comfortable for breathing. If not breathing, give artificial respiration. If breathing is difficult, trained personnel should give oxygen. Call a physician. After skin contact – wash affected area with soap and water gently during 15 – 20 minutes. Remove contaminated clothes and wash it before reuse. Discard contaminated shoes. After eye contact – protect unexposed eye, rinse or flush gently for at least 15 – 20 minutes. Contact an ophthalmologist immediately. After swallowing – Ingestion is not considered a potential route of exposure.

• Waste Disposal measures (include permis-

All unused or residual must be returned to the supplier.

• Personal Protective Equipment required

sible concentration limits as defined by the CEA, Regulation 347 and the Toronto Sewers Municipal Code if available – see lecture notes)

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• Spill cleaning measures – how do you clean up a spill?

Try to contain the release preventing the waste from contaminating soil, and water; Reduce the vapor with fog or water spray.

(all information was taken from Praxair, 2016) References: Praxair (2016). Safety data sheet hydrochloric acid gas Retrieved from http://biotech.bio5.org/sites/default/files/msds_hydrogen_chloride.pdf March 30th, 2020.

Professionalism – 4 marks

MARK: ________/ 50 TOTAL

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Hydrogen chloride Safety Data Sheet P-4606 This SDS conforms to U.S. Code of Federal Regulations 29 CFR 1910.1200, Hazard Communication. Date of issue: 01/01/1984 Revision date: 10/17/2016 Supersedes: 03/19/2015 S. Code of Federal Regulations 29 CFR 1910.1200, Hazard Communication. Revision date: 10/17/2016 Supersedes: 03/19/2015 SECTION: 1. Product and company identification

1.1. Product identifier Product form Name CAS No Formula Other means of identification

: Substance : Hydrogen chloride : 7647-01-0 : HCl : Anhydrous hydrochloric acid

1.2. Relevant identified uses of the substance or mixture and uses advised against Use of the substance/mixture

: Industrial use. Use as directed.

1.3. Details of the supplier of the safety data sheet Praxair, Inc. 10 Riverview Drive Danbury, CT 06810-6268 - USA T 1-800-772-9247 (1-800-PRAXAIR) - F 1-716879-2146 www.praxair.com 1.4. Emergency telephone number Emergency number : Onsite Emergency: 1-800-645-4633

CHEMTREC, 24hr/day 7days/week — Within USA: 1-800-424-9300, Outside USA: 001-703-527-3887 (collect calls accepted, Contract 17729) SECTION 2: Hazard identification

2.1. Classification of the substance or mixture GHS-US classification

Liquefied gas H280 Acute Tox. 3 (Inhalation:gas) H331 Skin Corr. 1A H314

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Eye Dam. 1

2.2.

H318

Label elements

GHS-US labeling

Hazard pictograms (GHS-US)

:

GHS04

Signal word (GHS-US) Hazard statements (GHS-US)

Precautionary statements (GHS-US)

GHS05

GHS06

: DANGER : H280 - CONTAINS GAS UNDER PRESSURE; MAY EXPLODE IF HEATED H314 - CAUSES SEVERE SKIN BURNS AND EYE DAMAGE H331 - TOXIC IF INHALED CGA-HG22 - CORROSIVE TO THE RESPIRATORY TRACT : P202 - Do not handle until all safety precautions have been read and understood P261 - Avoid breathing gas P262 - Do not get in eyes, on skin, or on clothing P271+P403 - Use and store only outdoors or in a well-ventilated place P280+P284 - Wear protective gloves, protective clothing, eye protection, respiratory protection, and/or face protection P405 - Store locked up P501 - Dispose of contents/container Dispose in a safe manner in accordance with local/national regulations

CGA-PG05 - Use a back flow preventive device in the piping CGA-PG20+CGA-PG10 - Use only with equipment of compatible materials of construction and rated for cylinder pressure CGA-PG12 - Do not open valve until connected to equipment prepared for use CGA-PG18 - When returning cylinder, install leak tight valve outlet cap or plug CGA-PG06 - Close valve after each use and when empty CGA-PG02 - Protect from sunlight when ambient temperature exceeds 52°C (125°F)

2.3.

Other hazards

Other hazards not contributing to the classification

2.4.

: None.

Unknown acute toxicity (GHS US) No data available

SECTION 3: Composition/Information on ingredients

3.1.

Substance

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Name

Product identifier

%

Hydrogen chloride

(CAS No) 7647-01-0

100

(Main constituent)

3.2.

Mixture

Not applicable SECTION 4: First aid measures

4.1. Description of first aid measures First-aid measures after inhalation

First-aid measures after skin contact

First-aid measures after eye contact

First-aid measures after ingestion

: Remove to fresh air and keep at rest in a position comfortable for breathing. If not breathing, give artificial respiration. If breathing is difficult, trained personnel should give oxygen. Call a physician. . WARNING: To avoid possible chemical burns, the rescuer should avoid breathing any exhaled air from the victim. : In case of contact, immediately flush affected areas with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Call a physician. Wash clothing before reuse. Discard contaminated shoes. : Immediately flush eyes thoroughly with water for at least 15 minutes. Hold the eyelids open and away from the eyeballs to ensure that all surfaces are flushed thoroughly. Contact an ophthalmologist immediately. : Ingestion is not considered a potential route of exposure.

4.2. Most important symptoms and effects, both acute and delayed No additional information available

4.3.

Indication of any immediate medical attention and special treatment needed

Obtain medical assistance. SECTION 5: Firefighting measures

5.1.

Extinguishing media

Suitable extinguishing media

5.2.

: Does not burn. Use extinguishing agents compatible with acid and appropriate for the burning material.

Special hazards arising from the substance or mixture

Reactivity

5.3.

: No reactivity hazard other than the effects described in sub-sections below.

Advice for firefighters

Firefighting instructions

: DANGER! Toxic, corrosive, liquefied gas.

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Evacuate all personnel from the danger area. Use self-contained breathing apparatus (SCBA) and protective clothing. Immediately cool containers with water from maximum distance. Stop flow of gas if safe to do so, while continuing cooling water spray. Remove ignition sources if safe to do so. Remove containers from area of fire if safe to do so. On-site fire brigades must comply with OSHA 29 CFR 1910.156 and applicable standards under 29 CFR 1910 Subpart L—Fire Protection. Special protective equipment for fire fighters Standard protective clothing and equipment (Self Contained Breathing Apparatus) for fire fighters. SECTION 6: Accidental release measures

6.1. Personal precautions, protective equipment and emergency procedures General : DANGER: Toxic. Corrosive. Wear a self-contained breathing apparatus and appromeasurespriate personal protective equipment (PPE). (gas tight, chemicalprotective) Evacuate personnel to a safe area. Approach suspected leak area with caution. Remove all sources of ignition. Toxic, corrosive vapor can spread from spill. Ventilate area or move container to a well-ventilated area. Before entering the area, especially a confined area, check the atmosphere with an appropriate device. 6.1.1. For non-emergency personnel No additional information available 6.1.2. For emergency responders No additional information available 6.2.

6.3. 6.4.

Environmental precautions Try to stop release. Reduce vapor with fog or fine water spray. Prevent waste from contaminating the surrounding environment. Prevent soil and water pollution. Dispose of contents/container in accordance with local/regional/national/international regulations. Contact supplier for any special requirements. Methods and material for containment and cleaning up No additional information available Reference to other sections See also sections 8 and 13.

SECTION 7: Handling and storage

7.1.

Precautions for safe handling

Precautions for safe handling : Wear leather safety gloves and safety shoes when handling cylinders. Protect cylinders from physical damage; do not drag, roll, slide or drop. While moving cylinder, always keep in place removable valve cover. Never attempt to lift a cylinder by its cap; the cap is intended solely to protect the valve. When moving cylinders, even for short distances,

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use a cart (trolley, hand truck, etc.) designed to transport cylinders. Never insert an object (e.g, wrench, screwdriver, pry bar) into cap openings; doing so may damage the valve and cause a leak. Use an adjustable strap wrench to remove over-tight or rusted caps. Slowly open the valve. If the valve is hard to open, discontinue use and contact your supplier. Close the container valve after each use; keep closed even when empty. Never apply flame or localized heat directly to any part of the container. High temperatures may damage the container and could cause the pressure relief device to fail prematurely, venting the container contents. For other precautions in using this product, see section 16.

7.2.

Conditions for safe storage, including any incompatibilities

Storage conditions : Store in a cool, well-ventilated place. Store and use with adequate ventilation. Store only where temperature will not exceed 125°F (52°C). Firmly secure containers upright to keep them from falling or being knocked over. Install valve protection cap, if provided, firmly in place by hand. Store full and empty containers separately. Use a first-in, first-out inventory system to prevent storing full containers for long periods OTHER PRECAUTIONS FOR HANDLING, STORAGE, AND USE: When handling product under pressure, use piping and equipment adequately designed to withstand the pressures to be encountered. Never work on a pressurized system. Use a back flow preventive device in the piping. Gases can cause rapid suffocation because of oxygen deficiency; store and use with adequate ventilation. If a leak occurs, close the container valve and blow down the system in a safe and environmentally correct manner in compliance with all international, federal/national, state/provincial, and local laws; then repair the leak. Never place a container where it may become part of an electrical circuit.

7.3.

Specific end use(s)

None. SECTION 8: Exposure controls/personal protection

8.1. Control parameters Hydrogen chloride (7647-01-0) ACGIH USA OSHA USA OSHA USA IDLH ACGIH

ACGIH TLV-C (ppm) OSHA PEL (Ceiling) (mg/m³) OSHA PEL (Ceiling) (ppm) US IDLH (ppm) Not established

2 ppm 7 mg/m³ 5 ppm 50 ppm

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8.2. Exposure controls Appropriate engineering controls

Hand protection Eye protection

Skin and body protection

Respiratory protection

Thermal hazard protection

: Use a corrosion-resistant local exhaust ventilation system with sufficient air flow velocity to maintain concentration below all applicable exposure limits in the worker's breathing zone. A canopy-type, forced-draft fume hood is preferred. : Neoprene rubber (HNBR) /. : Provide readily accessible eye wash stations and safety showers. Wear safety glasses when handling cylinders; vapor-proof goggles and a face shield during cylinder changeout or whenever contact with product is possible. Select eye protection in accordance with OSHA 29 CFR 1910.133. : Wear metatarsal shoes and work gloves for cylinder handling, and protective clothing where needed. Wear appropriate chemical gloves during cylinder changeout or wherever contact with product is possible. Select per OSHA 29 CFR 1910.132, 1910.136, and 1910.138. : When workplace conditions warrant respirator use, follow a respiratory protection program that meets OSHA 29 CFR 1910.134, ANSI Z88.2, or MSHA 30 CFR 72.710 (where applicable). Use an air-supplied or air-purifying cartridge if the action level is exceeded. Ensure that the respirator has the appropriate protection factor for the exposure level. If cartridge type respirators are used, the cartridge must be appropriate for the chemical exposure. For emergencies or instances with unknown exposure levels, use a self-contained breathing apparatus (SCBA). : Wear cold insulating gloves when transfilling or breaking transfer connections.

SECTION 9: Physical and chemical properties

9.1.

Information on basic physical and chemical properties

Physical state Appearance Molecular mass Color

: Gas : Colorless gas. : 36.5 g/mol : Colorless. Gives off white fumes in moist air.

Odor

: Pungent.

Odor threshold

: No data available

pH : Not applicable. Relative evaporation rate (butyl acetate=1) : No data available

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Relative evaporation rate (ether=1) Melting point

: Not applicable. : -114 °C

Freezing point

: No data available

Boiling point

: -85 °C

Flash point

: Not applicable.

Critical temperature Auto-ignition temperature

: 51.4 °C : Not applicable.

Decomposition temperature

: No data available

Flammability (solid, gas)

: Not Applicable

Vapor pressure

: 4260 kPa

Critical pressure Relative vapor density at 20 °C

: 8310 kPa : No data available

Relative density Density

1.2

Relative gas density Solubility

: 1.161 - 1.19 g/cm³ (at 20 °C) : 1.3 : Water: 720000 mg/l

Log Pow

: Not applicable.

Log Kow

: Not applicable.

Viscosity, kinematic

: 0.092 cSt Not applicable.

Viscosity, dynamic

: Not applicable.

Explosive properties

: Not applicable.

Oxidizing properties

: None.

Explosion limits

: Non flammable.

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9.2. Other information Gas group Additional information

: Liquefied gas : Gas/vapor heavier than air. May accumulate in confined spaces, particularly at or below ground level

SECTION 10: Stability and reactivity

10.1. Reactivity No reactivity hazard other than the effects described in sub-sections below. 10.2. Chemical stability Stable under normal conditions. 10.3. Possibility of hazardous reactions May occur. 10.4. Conditions to avoid Avoid moisture in installation systems. 10.5. Incompatible materials Most common metals and their alloys. Bases. unsaturated organics. metal carbides. Fluorine. metal acetylides. potassium permanganate. sulfuric acid.

10.6. Hazardous decomposition products Hydrogen. Chlorine. Chlorides. SECTION 11: Toxicological information

11.1. Information on toxicological effects Acute toxicity

: Inhalation:gas: TOXIC IF INHALED.

Hydrogen chloride ( \f )7647-010 LD50 oral rat LD50 dermal rabbit LC50 inhalation rat (ppm) ATE US (oral) ATE US (gases) Skin corrosion/irritation

238 - 277 mg/kg > 5010 mg/kg 3120 ppm/1h 238.000 mg/kg body weight 1560.000 ppmV/4h : CAUSES SEVERE SKIN BURNS AND EYE DAMAGE. pH: Not applicable.

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Serious eye damage/irritation Respiratory or skin sensitization Germ cell mutagenicity Carcinogenicity

: CAUSES SERIOUS EYE DAMAGE. pH: Not applicable. : Not classified : Not classified : Not classified

Hydrogen chloride (7647-01-0) IARC group

3 - Not classifiable

Reproductive toxicity : Not classified Specific target organ toxicity (single exposure) : Not classified Specific target organ toxicity (repeated : Not classified exposure) Aspiration hazard : Not classified SECTION 12: Ecological information

12.1. Toxicity Ecology - general

: No known ecological damage caused by this product.

12.2. Persistence and degradability Hydrogen chloride (7647-01-0) Persistence and degradability

Not applicable for inorganic gases.

12.3. Bioaccumulative potential Hydrogen chloride (7647-01-0) Log Pow Log Kow Bioaccumulative potential

Not applicable. Not applicable. No data available.

12.4. Mobility in soil Hydrogen chloride (7647-01-0) Mobility in soil

No data available.

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Ecology - soil

Because of its high volatility, the product is unlikely to cause ground or water pollution.

12.5. Other adverse effects Other adverse effects Effect on ozone layer

: May cause pH changes in aqueous ecological systems. : None : No known effects from this product

Effect on the global warming SECTION 13: Disposal considerations

13.1. Waste treatment methods Waste disposal recommendations : Do not attempt to dispose of residual or unused quantities. Return container to supplier. SECTION 14: Transport information

In accordance with DOT Transport document description UN-No.(DOT) Proper Shipping Name (DOT) Class (DOT) Hazard labels (DOT)

DOT Special Provisions (49 CFR 172.102)

: UN1050 Hydrogen chloride, anhydrous, 2.3 : UN1050 : Hydrogen chloride, anhydrous : 2.3 - Class 2.3 - Poisonous gas 49 CFR 173.115 : Poison Gas 2.3 - Poison gas 8 - Corrosive

3 - This material is poisonous by inhalation (see 171.8 of this subchapter) in Hazard Zone C (see 173.116(a) of this subchapter), and must be described as an inhalation hazard under the provisions of this subchapter N86 - UN pressure receptacles made of aluminum alloy are not authorized N89 - When steel UN pressure receptacles are used, only those bearing the “H” mark are authorized

Additional information Emergency Response Guide (ERG) Number Other information

: 125 (UN1050);157 (UN1789) : No supplementary information available.

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Special transport precautions

Transport by sea UN-No. (IMDG) Proper Shipping Name (IMDG) Class (IMDG) MFAG-No Air transport UN-No. (IATA) Proper Shipping Name (IATA) Class (IATA) Civil Aeronautics Law

: Avoid transport on vehicles where the load space is not separated from the driver's compartment. Ensure vehicle driver is aware of the potential hazards of the load and knows what to do in the event of an accident or an emergency. Before transporting product containers: - Ensure there is adequate ventilation. - Ensure that containers are firmly secured. - Ensure cylinder valve is closed and not leaking. - Ensure valve outlet cap nut or plug (where provided) is correctly fitted. - Ensure valve protection device (where provided) is correctly fitted.

: : : :

1050 HYDROGEN CHLORIDE, ANHYDROUS 2 - Gases 125

: : : :

1050 Hydrogen chloride, anhydrous 2 Gases under pressure/Gases toxic under pressure

SECTION 15: Regulatory information

15.1. US Federal regulations Hydrogen chloride (7647-01-0) Listed on the United States TSCA (Toxic Substances Control Act) inventory Listed on the United States SARA Section 302 Subject to reporting requirements of United States SARA Section 313 EPA TSCA Regulatory Flag T - T - indicates a substance that is the subject of a Section 4 test rule under TSCA CERCLA RQ 5000 lb SARA Section 302 Threshold Planning 500 lb (gas only) Quantity (TPQ) SARA Section 311/312 Hazard Classes Delayed (chronic) health hazard Immediate (acute) health hazard Sudden release of pressure hazard SARA Section 313 - Emission Reporting 1.0 % (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)

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15.2. International regulations CANADA

Hydrogen chloride (7647-01-0) Listed on the Canadian DSL (Domestic Substances List)

EURegulations

Hydrogen chloride (7647-01-0) Listed on the EEC inventory EINECS (European Inventory of Existing Commercial Chemical Substances) 15.2.2. National regulations

Hydrogen chloride (7647-01-0) Listed on the AICS (Australian Inventory of Chemical Substances) Listed on IECSC (Inventory of Existing Chemical Substances Produced or Imported in China) Listed on the Japanese ENCS (Existing & New Chemical Substances) inventory Listed on the Korean ECL (Existing Chemicals List) Listed on NZIoC (New Zealand Inventory of Chemicals) Listed on PICCS (Philippines Inventory of Chemicals and Chemical Substances) Japanese Poisonous and Deleterious Substances Control Law Listed on the Canadian IDL (Ingredient Disclosure List) Listed on INSQ (Mexican National Inventory of Chemical Substances) Listed on CICR (Turkish Inventory and Control of Chemicals)

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SECTION 16: Other information Other information

: When you mix two or more chemicals, you can create additional, unexpected hazards. Obtain and evaluate the safety information for each component before you produce the mixture. Consult an industrial hygienist or other trained person when you evaluate the end product. Before using any plastics, confirm their compatibility with this product Praxair asks users of this product to study this SDS and become aware of the product hazards and safety information. To promote safe use of this product, a user should (1) notify employees, agents, and contractors of the information in this SDS and of any other known product hazards and safety information, (2) furnish this information to each purchaser of the product, and (3) ask each purchaser to notify its employees and customers of the product hazards and safety information The opinions expressed herein are those of qualified experts within Praxair, Inc. We believe that the information contained herein is current as of the date of this Safety Data Sheet. Since the use of this information and the conditions of use are not within the control of Praxair, Inc, it is the user's obligation to determine the conditions of safe use of the product Praxair SDSs are furnished on sale or delivery by Praxair or the independent distributors and suppliers who package and sell our products. To obtain current SDSs for these products, contact your Praxair sales representative, local distributor, or supplier, or download from www.praxair.com. If you have questions regarding Praxair SDSs, would like the document number and date of the latest SDS, or would like the names of the Praxair suppliers in your area, phone or write the Praxair Call Center (Phone: 1-800PRAXAIR/1-800-772-9247; Address: Praxair Call Center, Praxair, Inc, P.O. Box 44, Tonawanda, NY 14151-0044) PRAXAIR and the Flowing Airstream design are trademarks or registered trademarks of Praxair Technology, Inc. in the United States and/or other countries.

NFPA health hazard

NFPA fire hazard NFPA reactivity

: 3 - Short exposure could cause serious temporary or residual injury even though prompt medical attention was given. : 0 - Materials that will not burn. : 1 - Normally stable, but can become unstable at elevated temperatures and pressures or may react with water with some release of energy, but not violently.

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HMIS III Rating Health Flammability Physical

: 3 Serious Hazard - Major injury likely unless prompt action is taken and medical treatment is given : 0 Minimal Hazard : 3 Serious Hazard

SDS US (GHS HazCom 2012) - Praxair This information is based on our current knowledge and is intended to describe the product for the purposes of health, safety and environmental requirements only. It should not therefore be construed as guaranteeing any specific property of the product.

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