This document provides a material safety data sheet for chlorine. It lists chlorine as the product identified and notes its uses in water treatment and production of other chemicals. It outlines health hazards like irritation from inhalation, skin contact, and eye contact. It provides exposure limit information and recommendations for protective equipment, first aid measures, fire fighting, accidental release, handling and storage, physical properties, stability, toxicity, ecological information, and regulatory information.

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MATERIAL SAFETY DATA SHEET
Chlorine
Section 01 - Product And Company Information
Product Identifier ……………………... Chlorine
Product Use …………………………..... Used in water treatment as a disinfectant and oxidizer; production of
chlorinated organic and inorganic chemicals; bleaching of paper, textiles
and fabrics.
Supplier Name……………………….…. ClearTech Industries Inc.
1500 Quebec Avenue
Saskatoon, SK. Canada
S7K 1V7
Prepared By................……………..….. ClearTech Industries Inc. Technical Department
Phone: (306)664-2522
Preparation Date.........…………….….. June 12, 2013
24-Hour Emergency Phone………….. 306-664-2522
Section 02 - Composition / Information on Ingredients
Ingredients....………….... Chlorine 100%
CAS Number...................…….…….... Chlorine 7782-50-5
Synonym (s)...................……………...Liquid chlorine, chlorine gas

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Section 03 - Hazard Identification
Inhalation...................………….….... Chlorine is irritating to the nose, throat, and lungs. Symptoms include:
coughing, shortness of breath, chest pain, nausea, vomiting, and
dizziness. Pulmonary edema (swelling) and chemical pneumonia can
develop hours after exposure. High concentrations may cause
unconsciousness and death.
Skin Contact / Absorption…….…... High concentrations can cause severe irritation and tissue destruction.
Symptoms include: burning and prickling sensations, reddening, and
blisters. Direct contact with liquid causes severe local irritation, blistering
and burns.
Eye Contact................………….…... A severe irritant of the eyes. Symptoms include: stinging and burning
sensation with excessive tear production. Direct contact with liquid may
cause burns, permanent damage, and possibly blindness.
Ingestion.....................………………. Not a likely route of exposure as chlorine is a gas at room temperature.
Liquid may cause pain, burning, thirst, abdominal cramps, nausea, and
vomiting. Irritation and swelling of the throat causes difficulty breathing.
Exposure Limits…………………….. ACGIH/TLV-TWA: 0.5ppm
ACGIH/TLV-STEL: 1.0ppm
Section 04 - First Aid Measures
Inhalation....................……………….. Remove victim to fresh air. Give artificial respiration only if breathing has
stopped. If breathing is difficult, give oxygen. Seek immediate medical
attention.
Skin Contact / Absorption………….. Avoid direct contact with this chemical. Remove contaminated clothing.
Wash affected area with soap and water. Seek medical attention
immediately if irritation occurs or persists.
Eye Contact..................…………….... Check for and remove any contact lenses. Flush immediately with water
for at least 20 minutes. Forcibly hold eyelids apart to ensure complete
irrigation of eye tissue. Seek immediate medical attention.
Ingestion......................………………. Do not induce vomiting. If vomiting occurs, lean victim forward to prevent
breathing in vomit and rinse mouth. Give a cup of water to dilute if patient
is conscious. Do not give anything by mouth to an unconscious or
convulsing person. Seek immediate medical attention.
Additional Information.....…………... Development of pulmonary edema may be delayed 48-72 hours.

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Section 05 - Fire Fighting Measures
Conditions of Flammability……….... Does not burn. Note that chlorine is a strong oxidizing agent and is a
serious fire risk due to its reactivity.
Means of Extinction........………….... Product does not burn. Where fire is involved use any fire fighting agent
that is appropriate extinguishing media for material that is supplying the
fuel to the fire. Avoid direct contact with water to leaking container
surfaces. Do not use dry chemicals, carbon dioxide or halogenated
extinguishing agents
Flash Point....…………………………. Not applicable
Auto-ignition Temperature…………. Not applicable
Upper Flammable Limit …………….. Not applicable
Lower Flammable Limit...……….….. Not applicable
Hazardous Combustible Products... Toxic products are formed when combustibles burn in chlorine. Water
sprayed directly on chlorine forms corrosive hypochlorous and
hydrochloric acids.
Special Fire Fighting Procedures..... Wear NIOSH-approved self-contained breathing apparatus and
protective clothing. Remove chlorine containers from fire area if safe to
do so. Use water spray to cool containers, knock down fumes, and to
direct escaping gas away from persons. Use water with caution since
chlorine in water is very corrosive. Ventilate area. Chlorine gas is heavier
than air and may collect in low areas.
Explosion Hazards…………………... May react to cause fire and explosion upon contact with many organic
compounds, ammonia, hydrogen, and many metals at elevated
temperatures.
Section 06 - Accidental Release Measures
Leak / Spill................….…………….. Restrict access to area until clean up is complete. Wear appropriate
personal protective equipment. Ventilate area and remove any ignition
sources. Do not spray leak with water since a reaction producing
corrosive hypochlorous and hydrochloric acids occurs, which can
aggravate the leak. Stop or reduce leak if safe to do so and prevent from
entering sewers or confined spaces. Spills may be absorbed and
neutralized into solutions of caustic soda or lime and placed in containers
of suitable material (polypropylene, polyvinyl chloride, fibreglass, lead).
Note heat may be generated during neutralization process so safety
precautions must be observed. Larger, uncontrollable leaks require
possible evacuation of surrounding area as well as environmental
considerations. When possible, draw off chlorine to process or disposal
system.

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Deactivating Materials...……….…... May be absorbed or neutralized into alkaline solutions of caustic soda or
lime. Solutions should be treated with a dechlorinating agent prior to
disposal.
Section 07 - Handling and Storage
Handling Procedures.......………….. Store containers as per Chlorine Institute Guidelines. Use proper
equipment for lifting and transporting all containers. Use sensible
industrial hygiene and housekeeping practices. Wash thoroughly after
handling. Avoid all situations that could lead to harmful exposure. Liquid
chlorine lines must have suitable expansion chambers between block
valves dues to high coefficient of expansion. Inspect piping and
containers used for chlorine service on a regular basis. Emergency
equipment should be readily available. An emergency plan and special
training where chlorine is used should be established.
Storage Requirements......……...….. Store in a cool, dry location outdoors or in well-ventilated areas, detached/
segregated areas of noncombustible materials. Refer to Chlorine Institute
guidelines and local regulations for other storage requirements. Keep
containers tightly closed, and away from incompatible materials. Store
away from sunlight and sources of heat and ignition. 68 kg cylinders
should be stored in an upright position. Prevent exposing cylinders to
temperatures above 51o
C.
Section 08 - Personal Protection and Exposure Controls
Protective Equipment
Eyes.………………………….………... Chemical goggles, full-face shield, or a full-face respirator is to be worn at
all times when product is handled. Contact lenses should not be worn;
they may contribute to severe eye injury.
Respiratory………………………….... Up to 5ppm: cartridge respirator with cartridge protecting against
chlorine or supplied air respirator.
Up to 10ppm: supplied air respirator operated in continuous flow mode; or
powered air purifying respirator with cartridge protecting against chlorine;
or full facepiece chemical cartridge respirator with cartridge protecting
against chlorine; or full facepiece self contained breathing apparatus.
Emergency or entry in unknown or IDHL (10ppm for chlorine) conditions:
positive pressure full facepiece self contained breathing apparatus or
positive pressure full facepiece supplied air respirator with auxiliary
positive pressure self contained breathing apparatus.
Gloves………………………………..... Impervious gloves of chemically resistant material (butyl rubber,
neoprene) should be worn at all times. Wash contaminated clothing and
dry thoroughly before reuse.

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Clothing………………………..…….... Body suits, aprons, and/or coveralls of chemical resistant material (butyl
rubber, neoprene, Teflon, Responder, Viton) should be worn at all times.
Wash contaminated clothing and dry thoroughly before reuse.
Footwear……………………………..... Impervious boots of chemically resistant material should be worn at all
times.
Engineering Controls
Ventilation Requirements………...... Mechanical ventilation (dilution or local exhaust), process or personnel
enclosure and control of process conditions should be provided. Supply
sufficient replacement air to make up for air removed by exhaust systems.
Other………………………………….... Emergency shower and eyewash should be in close proximity.
Section 09 - Physical and Chemical Properties
Physical State.......……....………….... Gas or liquid (under pressure)
Odor and Appearance…..…………... Amber color, liquified gas under pressure which vaporizes to greenish
yellow gas. Has a pungent suffocating odor.
Odor Threshold....……………............ 0.06ppm (detection), 0.2ppm (perception)
Specific Gravity (Water=1)…………. Approx. 1.467 at 0o
C (liquid)
Vapor Pressure (mm Hg, 20C)….….. 4788
Vapor Density (Air=1)..…………….... 2.49 at 0o
C
Evaporation Rate........……..…….….. Not applicable, gas at normal temperatures
Boiling Point...............………….….... -34.6o
C
Melting Point....……………................ -101o
C
pH............................……………….….. Not applicable (reacts with water to form acidic solution)
Water/Oil Distribution Coefficient.... Not available
Bulk Density..............…………….….. 88.76 lb/ft3
at 16o
C
% Volatiles by Volume………..…….. Not available
Solubility in Water...………………..... 0.7g per 100g of water at 20o
C
Molecular Formula......………….….... Cl2

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Molecular Weight........……………..... 70.9
Section 10 - Stability and Reactivity
Stability.................…………....……………. Strong oxidizer. Stable in steel containers at room temperature. Heat
above 215o
C can cause steel to ignite chlorine. Reacts with water to
form hypochlorous acid and hydrochlorice acid.
Incompatibility..............…………..……….. Hydrocarbons, turpentine, acetylene, hydrogen, alcohols, some
metals (powdered aluminum, brass, iron, copper foil, potassium, tin,
titanium), nitrogen compounds, non-metals (boron, active carbon,
phosphorus, silicon), ammonia, sodium hydroxide and water.
Hazardous Products of Decomposition.. Ammonia and other nitrogen compounds react with chlorine to form
highly explosive nitrogen trichloride. Hydrochloric and hypochlorous
acids may form from chlorine in the presence of water vapor.
Chlorine in contact with carbon monoxide and sulphur dioxide may
form phosgene and sulfuryl chloride respectively.
Polymerization...........…………….…….…. Will not occur
Section 11 - Toxicological Information
Irritancy.................……..………….…. Severe irritant. Skin and eye irritant.
Sensitization........…….......………….. Not available
Chronic/Acute Effects……...……….. Repeated or prolonged exposure to 0.4-9.0ppm gas may cause
respiratory effects, inflammation of the nose, and corrosion of tooth
enamel. Fatigue may occur when repeatedly exposed to chlorine. High
concentrations inhaled may result in unconsciousness and death.
Synergistic Materials...……....……... Not available
Animal Toxicity Data......…..……….. LD50 (Inhalation, Rat): 293ppm at 1 hour
LD50 (Inhalation, Mice): 137ppm at 1 hour
Carcinogenicity......……......………... Not listed on IARC, NTP, OSHA and ACGIH carcinogen lists.
Reproductive Toxicity..…...………... Not available
Teratogenicity..........….....…………... Not available
Mutagenicity...........…….....…………. Not available

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Section 12 - Ecological Information
Fish Toxicity..................……………... LC50 (Fathead Minnow, 96 hours): 0.07-0.15ppm
LC50 (Bluegill, 96 hours): 0.44mg/L
Biodegradability.............……….….... Product not biodegradable. Chlorine can however, be converted to
chloride by reducers in natural environment. Presence of light will
accelerate dissipation of chlorine in water.
Environmental Effects………………. Will cause immediate damage to wildlife, fish, and plants. Unlikely to
accumulate due to reactivity with moisture and tissues.
Section 13 - Disposal Consideration
Waste Disposal...........…...………….. Dispose in accordance with all federal, provincial, and/or local regulations
including the Canadian Environmental Protection Act.
Section 14 - Transport Information
TDG Classification
Class……………..………………..….... 2.3 (8)
Group...............…………….......……... Packing group not required
PIN Number.................……..………... UN1017
Other………………………………….... Secure containers (full and/or empty) with suitable hold down devises
during shipment and ensure all caps, valves, or closures are secured in
the closed position.
Section 15 - Regulatory Information
WHMIS Classification.......…………....A, D1, D2, E
NOTE: THE PRODUCT LISTED ON THIS MSDS HAS BEEN CLASSIFIED IN ACCORDANCE WITH THE
HAZARD CRITERIA OF THE CANADIAN CONTROLLED PRODUCTS REGULATIONS. THIS MSDS
CONTAINS ALL INFORMATION REQUIRED BY THOSE REGULATIONS.
NSF Certification.................................Product is certified under NSF/ANSI Standard 60 for disinfection and
oxidation at a maximum dosage of 30mg/L.

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Section 16 - Other Information
Note: The responsibility to provide a safe workplace remains with the user. The user should consider the health
hazards and safety information contained herein as a guide and should take those precautions required in an
individual operation to instruct employees and develop work practice procedures for a safe work environment. The
information contained herein is, to the best of our knowledge and belief, accurate. However, since the conditions
of handling and use are beyond our control, we make no guarantee of results, and assume no liability for
damages incurred by the use of this material. It is the responsibility of the user to comply with all applicable laws
and regulations.
Attention: Receiver of the chemical goods / MSDS coordinator
As part of our commitment to the Canadian Association of Chemical Distributors (CACD) Responsible
Distribution® initiative, ClearTech Industries Inc. and its associated companies require, as a condition of sale, that
you forward the attached Material Safety Data Sheet(s) to all affected employees, customers, and end-users.
ClearTech will send any available supplementary handling, health, and safety information to you at your request.
If you have any questions or concerns please call our customer service or technical service department.
ClearTech Industries Inc. - Locations
Corporate Head Office: 1500 Quebec Avenue, Saskatoon, SK, S7K 1V7
Phone: 306-664-2522
Fax: 306-665-6216
www.ClearTech.ca
Location Address Postal Code Phone Number Fax Number
Richmond, B.C. 12431 Horseshoe Way V7A 4X6 604-272-4000 604-272-4596
Calgary, AB. 5516E - 40th
St. S.E. T2C 2A1 403-279-1096 403-236-0989
Edmonton, AB. 12020 - 142nd
Street T5L 2G8 780-452-6000 780-452-4600
Saskatoon, SK. 19 Peters Ave, North Corman Park S7K 1V7 306-933-0177 306-933-3282
Regina, SK. 555 Henderson Drive S42 5X2 306-721-7737 306-721-8611
Winnipeg, MB. 340 Saulteaux Crescent R3J 3T2 204-987-9777 204-987-9770
Mississauga, ON. 7480 Bath Road L4T 1L2 905-612-0566 905-612-0575
24 Hour Emergency Number - All Locations - 306-664-2522