Product #SFIT Page 1 of 7
MATERIAL SAFETY DATA SHEET
Sodium Sulphite
Section 01 - Chemical And Product And Company Information
Product Identifier .......................... Sodium Sulphite, 95-97%
Sodium Sulphite, Catalyzed
Product Use ................................. Bleaching operations, reducing agent in the manufacture of dyes,
photographic developers and fixers, food additive, water treatment
dechlorinating agent
Supplier Name............................... ClearTech Industries Inc.
2302 Hanselman Avenue
Saskatoon, SK. Canada
S7L 5Z3
Prepared By..................................... ClearTech Industries Inc. Technical Department
Phone: (306)664-2522
Preparation Date............................. February 28, 2007
24-Hour Emergency Phone............. 306-664-2522
Section 02 - Composition / Information on Ingredients
Hazardous Ingredients................... 95-97%:
>97%
Sodium Sulphite
<3%
Sodium Sulphate
Catalyzed:
>95%
Sodium Sulphite
<2%
Sodium Sulphate
0.04%
Cobalt Sulphate
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CAS Number.................................... 95-97%:
7757-83-7
Sodium Sulphite
7757-82-6
Sodium Sulphate
Catalyzed:
7757-83-7
Sodium Sulphite
7757-82-6
Sodium Sulphate
10124-43-3
Cobalt Sulphate
Synonym (s)................................... Disodium sulfite, sodium sulfite
Section 03 - Hazard Identification
Inhalation.........................................Inhalation of dust may irritate respiratory tract.
Skin Contact / Absorption.............. Dust may cause skin irritation from prolonged contact. Solutions will irritate
skin.
Eye Contact.....................................Dust may irritate or burn eyes. Solutions will irritate or burn eyes.
Ingestion.........................................Ingestion may irritate gastrointestinal tract. May cause severe allergic
reaction in some asthmatics and sulphite sensitive individuals. Large doses
may cause violent colic and diarrhea, circulatory disturbances, central
nervous system depression and even death.
Exposure Limits............................None established for sodium sulphite. The decomposition product of
sulphur dioxide has the following limits:
OSHA/TWA= 5ppm (sulphur dioxide)
ACGIH/TLV= 5ppm (sulphur dioxide)
ACGIH/STEL= 2ppm (sulphur dioxide)
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 medical attention if
irritation persists.
Skin Contact / Absorption............... Remove contaminated clothing. Wash affected area with soap and water.
Seek medical attention if irritation occurs or persists.
Eye Contact...................................... 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.......................................... If conscious, immediately give 2 to 4 glasses or water or milk and induce
vomiting under medical supervision. Get immediate medical attention.
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Additional Information.....................Treat symptomatically. Note potential for anaphylactic shock with allergic
individuals.
Section 05 - Fire Fighting
Conditions of Flammability.............. Non-flammable
Means of Extinction......................... Product does not burn. Where fire is involved, use any fire fighting agent
appropriate for surrounding material; use water spray to cool fire-exposed
surfaces.
Flash Point.....................................Not applicable
Auto-ignition Temperature.............. Not applicable
Upper Flammable Limit .................. Not applicable
Lower Flammable Limit....................Not applicable
Hazardous Combustible Products.... May yield sulphur dioxide gas upon decmposition at 900oC.
Special Fire Fighting Procedures...... Wear NIOSH-approved self-contained breathing apparatus and protective
clothing.
Explosion Hazards......................... Non-explosive
Section 06 - Accidental Release Measures
Leak / Spill.......................................Wear appropriate personal protective equipment if required. Ventilate area.
Stop or reduce leak if safe to do so. Prevent material from entering
sewers. Flush with water to remove any residue. Cautiously spray residue
with plenty of water. Provide ventilation to clear sulphur dioxide fumes
which may form.
Deactivating Materials.....................Not available
Section 07 - Handling and Storage
Handling Procedures.......................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.
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Storage Requirements..................... Store in a cool, dry area and away from acids or oxidizers. Keep container
closed. Protect from physical damage.
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...................................If dusty conditions prevail use a dust mask approved by NIOSH. If sulphur
dioxide should be released use a self-contained breathing apparatus.
Gloves..........................................Impervious gloves of chemically resistant material (rubber or PVC) or
cotton should be worn at all times. Wash contaminated clothing and dry
thoroughly before reuse.
Clothing........................................Body suits, aprons, and/or coveralls of chemical resistant material should
be worn at all times. Wash contaminated clothing with soap and water, dry
thoroughly before reuse.
Footwear...................................... No special footwear is required other than what is mandated at place of
work.
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............................................Keep incompatible materials out of hoods, ducts, etc. Provide eyewash
facility near work place.
Section 09 - Physical and Chemical Properties
Physical State..................................Solid
Odor and Appearance.....................Odourless white to pale yellow crystals or powder
Odor Threshold................................Not applicable
Specific Gravity (Water=1)...............2.63
Vapor Pressure (mm Hg, 20C)..........Not applicable
Vapor Density (Air=1)......................Not applicable
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Evaporation Rate............................. Not applicable
Boiling Point.................................... Not applicable
Freeze/Melting Point........................900癈(decomposes)
pH.....................................................9.8 for a 5% solution
Water/Oil Distribution Coefficient.....Not available
Bulk Density.................................... Not available
% Volatiles by Volume.................... Not applicable
Solubility in Water.......................... 17% w/w at 10癈
28% w/w at 33癈
Molecular Formula...........................Na2SO3
Molecular Weight.............................126.04
Section 10 - Stability and Reactivity
Stability.................................................Stable under normal conditions
Incompatibility.......................................Acids and strong oxidizers
Hazardous Products of Decomposition.. Reaction with strong oxidizers cause vigorous exothermic reactions.
Reaction with acids release sulfur dioxide gas.
Polymerization...................................... Will not occur
Section 11 - Toxicological Information
Irritancy.......................................... Mild irritant
Sensitization...................................Data not available
Chronic/Acute Effects.................... Acute effects - estimated to be moderately toxic.
Synergistic Materials...................... Data not available
Animal Toxicity Data.......................LD50(oral,mouse)= 820mg/kg (sodium sulphite)
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Carcinogenicity...............................Not considered to be carcinogenic by the ACGIH or IARC.
Reproductive Toxicity.....................Not available
Teratogenicity................................. Sodium sulphate is listed as a possible teratogen by the seventh edition of
Dangerous Properties of Industrial Materials.
Mutagenicity................................... Sodium sulphite has been demonstrated to be mutagenic in microbial
systems. It has not been mutagenic in studies involving insects and is not
considered to pose a mutagenic threat to multicell organisms such as
animals or humans.
Section 12 - Ecological Information
Fish Toxicity....................................Aquatic toxicity:
TLm(mosquito fish,96 hour)= 2600ppm
Biological oxygen demand (BOD)= 0.12lb/lb
Biodegradability.............................. Not available
Environmental Effects................... Not available
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 - Transportation Information
TDG Classification
Class.............................................Not regulated
Group...............................................Not regulated
PIN Number...................................... Not regulated
Other............................................ Secure containers (full and/or empty) with suitable hold down devises
during shipment.
Section 15 - Regulatory Information
WHMIS Classification.......................D2
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
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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: 2302 Hanselman Avenue, Saskatoon, SK, S7L 5Z3
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. 11750 - 180th Street T5S 1N7 780-452-6000 780-452-4600
Saskatoon, SK. 2302 Hanselman Avenue S7L 5Z3 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
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