Sodium Sulfite
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MATERIAL SAFETY DATA SHEET
SECTION I: IDENTIFICATION OF PRODUCT
PRODUCT NAME: Sodium Sulfite, Catalyzed
PRODUCT USE: Oil Well Fluid Additive CAS NO. 7757-83-7
CHEMICAL FAMILY: 7681-57-4
WORK PLACE HAZARDOUS MATERIALS INFORMATION SYSTEM (WHMIS)
WHMIS CLASSIFICATION: Class D鈥?2(B)
WORK PLACE HAZARD: Skin and eye irritant
TRANSPORTATION OF DANGEROUS GOODS (TDG)
SHIPPING NAME: Not Regulated Under TDG
TDG CLASSIFICATION: N/A
UN NUMBER (PIN): N/A
PACKING GROUP: N/A
SECTION II: HAZARDOUS INGREDIENTS
INGREDIENT PERCENT CAS NUMBER LD(50) Oral-Rat LLC Rat-Inhal ACGIH-TLV
(50)
Sodium Sulfite 94.5-96.5 7757-83-7 2825 mg/kg N/D N/D
Sodium metabisulfite 2.20 7681-57-4 115 mg/kg N/D N/D
SECTION III: TOXICOLOGICAL PROPERTIES
ROUTE OF ENTRY: [XX] SKIN [XX] EYE CONTACT [XX] INHALATION [XX] INGESTION
EYE CONTACT: Dust or mist may irritate or burn eyes. Solutions will irritate or burn.
SKIN CONTACT: Dust or mist ma cause skin irritation from prolonged contact. Solutions will irritate.
INGESTION: Ingestion may irritate gastrointestinal tract. May cause severe allergic reaction in asthmatics/sulfite
sensitive individuals. Large doses may cause violent colic, diarrhoea, circulatory disturbances,
central nervous system depression and even death.
INHALATION: Dust or mist may irritate respiratory tract.
SECTION IV: FIRST AID MEASURES
Sodium Sulfite
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MATERIAL SAFETY DATA SHEET
SKIN CONTACT: Promptly wash with plenty of soap and water.
EYE CONTACT: Immediately flush eyes with plenty of water for at least 15 minutes. Get medical attention.
INGESTION: If conscious, immediately give 2-4 glasses of water/milk and induce vomiting. See Physician.
INHALATION: Remove to fresh air. If symptoms persist, get medical attention.
SECTION V: PHYSICAL DATA
APPEARANCE AND ODOUR: White granular crystals or powder, odourless
SPECIFIC GRAVITY: 2.63 g/cc
BOILING POINT (oC): Decomposes at 900/C
MELTING POINT (oC): N/A
pH: Approximately 9.8
SOLUBILITY IN WATER: 17% by wt. @ 10/c
PERCENT VOLATILE BY VOLUME: : N/A
EVAPORATION RATE: :N/A
VAPOUR PRESSURE (mm Hg): :N/A
VAPOUR DENSITY (lb/ft3): :N/A
SECTION VI: FIRE AND EXPLOSION HAZARD DATA
FLASH POINT: None
FLAMMABLE LIMITS: Not Determined
EXTINGUISHING MEDIA: Use water spray to keep containers cool and to knock down fumes.
SPECIAL FIRE FIGHTING PROCEDURES: Self-contained respirators required for fire fighting personnel.
UNUSUAL FIRE AND EXPLOSION HAZARDS: N/A
SECTION VII: REACTIVITY DATA
STABILITY: Stable [XX] Unstable [ ]
INCOMPATIBILITY (CONDITIONS TO AVOID): Strong oxidizers cause vigorous exothermic reactions.
Acids release sulphur dioxide gas.
Sodium Sulfite
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MATERIAL SAFETY DATA SHEET
HAZARDOUS DECOMPOSITION PRODUCTS: Sulphur dioxide gas-toxic & corrosive. Sodium sulphide
residue-flammable, dangerous fire risk, strong irritant to
skin and tissue, incompatible with acids.
HAZARDOUS POLYMERIZATION: Will not occur [XX] May occur [ ]
VIII: PREVENTIVE MEASURES
SPECIAL PROTECTION INFORMATION
RESPIRATORY PROTECTION: NIOSH approved self-contained breathing apparatus.
VENTILATION: Simply, good ventilation
PROTECTIVE GLOVES: Rubber Gloves
EYE PROTECTION: Splash Goggles (do not wear contact lenses)
OTHER PROTECTIVE EQUIPMENT (Specify): Suggest rubber apron. Long-sleeved shirt and trousers. Make
eye bath and emergency shower available.
PRECAUTIONS TO BE TAKEN IN HANDLING AND STORING
Avoid contact with eyes, skin and clothes. Avoid breathing dust or mist. When dissolving, add water cautiously while
stirring. Local exhaust if dusty or misty condition prevails or if there is release of sulphur dioxide gas. Keep incompatible
materials out of hoods, ducts, etc. Provide eyewash facility. Use good hygiene/housekeeping practices. Store in cool, dry
area, away from acids or oxidizers. Keep container closed. Protect from Physical damage.
STEPS TO BE TAKEN IN CASE THE MATERIAL IS SPILLED OR RELEASED
Promptly shovel up dry chemical into an empty container and cover. Store as above. Cautiously spray residue with water.
Neutralize and dispose as noted below.
WASTE DISPOSAL METHOD
Dissolve in water, using caution as solution can get hot. Neutralize with acid. Good ventilation is required due to release
of SO2 gas. Oxidation to sodium sulphate may be required, by adding an excess of dilute hydrogen peroxide carefully and
stirring. Dispose of neutralized waste consistent with the requirements of local and provincial waste disposal authorities.
SECTION IX: PREPARATION
THE INFORMATION CONTAINED HEREIN IS GIVEN IN GOOD FAITH, BUT NO WARRANTY, EXPRESSED OR
IMPLIED, IS MADE.
DATE PRINTED: April 6, 2006 BY: MILLENNIUM TECHNOLOGIES LTD.
DATE MODIFIED: May 18, 2004 APPROVED BY:
SUPERSEDES: October 1, 2003
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