Section 1. Chemical Product and Company Identification
Section 4. First Aid Measures
Eye Contact Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for
at least 15 minutes. Cold water may be used. Get medical attention immediately.
Skin Contact In case of contact, immediately flush skin with plenty of water. Cover the irritated skin with an emollient.
Remove contaminated clothing and shoes. Cold water may be used.Wash clothing before reuse. Thoroughly
clean shoes before reuse. Get medical attention.
Serious Skin Contact Wash with a disinfectant soap and cover the contaminated skin with an anti-bacterial cream. Seek immediate
Inhalation If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Get medical attention.
Serious Inhalation Not available.
Ingestion Do NOT induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an
unconscious person. If large quantities of this material are swallowed, call a physician immediately. Loosen
tight clothing such as a collar, tie, belt or waistband.
Serious Ingestion Not available.
Section 5. Fire and Explosion Data
Flammability of the Product Non-flammable.
Auto-Ignition Temperature Not applicable.
Flash Points Not applicable.
Flammable Limits Not applicable.
Products of Combustion Not available.
Fire Hazards in Presence of Not applicable.
Explosion Hazards in Presence Risks of explosion of the product in presence of mechanical impact: Not available.
of Various Substances Risks of explosion of the product in presence of static discharge: Not available.
Fire Fighting Media Not applicable.
Special Remarks on When heated to decomposition it emits toxic fumes of SOx, Na2O.
Fire Hazards Decomposes on heating to form sodium sulfate
Special Remarks on Explosion Not available.
Section 6. Accidental Release Measures
Small Spill Use appropriate tools to put the spilled solid in a convenient waste disposal container. Finish cleaning by
spreading water on the contaminated surface and dispose of according to local and regional authority
Large Spill Use a shovel to put the material into a convenient waste disposal container. Finish cleaning by spreading
water on the contaminated surface and allow to evacuate through the sanitary system. Be careful that the
product is not present at a concentration level above TLV. Check TLV on the MSDS and with local
Section 7. Handling and Storage
Precautions Do not ingest. Do not breathe dust. Avoid contact with skin. Wear suitable protective clothing. In case of
insufficient ventilation, wear suitable respiratory equipment. If ingested, seek medical advice immediately and
show the container or the label. Keep away from incompatibles such as oxidizing agents, acids.
Storage Keep container tightly closed. Keep container in a cool, well-ventilated area. Moisture sensitive. Air
Section 8. Exposure Controls/Personal Protection
Engineering Controls Use process enclosures, local exhaust ventilation, or other engineering controls to keep airborne levels below
recommended exposure limits. If user operations generate dust, fume or mist, use ventilation to keep
exposure to airborne contaminants below the exposure limit.
Personal Protection Safety glasses. Lab coat. Dust respirator. Be sure to use an approved/certified respirator or equivalent.
Personal Protection in Case of Splash goggles. Full suit. Dust respirator. Boots. Gloves. A self contained breathing apparatus should be
a Large Spill used to avoid inhalation of the product. Suggested protective clothing might not be sufficient; consult a
specialist BEFORE handling this product.
Exposure Limits TWA: 5 (mg/m3) from OSHA (PEL) [United Kingdom (UK)]
TWA: 5 (mg/m3) from ACGIH (TLV) [United States]
TWA: 5 (mg/m3) from NIOSH [United States]
TWA: 5 (mg/m3) [United Kingdom (UK)]
Consult local authorities for acceptable exposure limits.
Section 9. Physical and Chemical Properties
Solid. (Crystals solid or Powdered solid. Odor odor of sulfur dioxide
Physical state and appearance
Taste Not available.
Molecular Weight 190.13 g/mole
Color White to yellowish.
pH (1% soln/water) 4.3 [Acidic.]
Melting Point Decomposition temperature: 150°C (302°F)
Critical Temperature Not available.
Specific Gravity 1.4 - 1.48 (Water = 1)
Vapor Pressure 0 mm Hg. It is a solid that doesn't emit any vapors.
Vapor Density Not available.
Volatility Not available.
Water/Oil Dist. Coeff. Not available.
Ionicity (in Water) Not available.
Dispersion Properties See solubility in water.
Solubility Easily soluble in cold water, hot water.
Freely soluble in glycerol.
Slightly soluble in alcohol.
Moderately soluble in ethanol.
Solubility in Water: 54 g/100 ml water @ 20 deg. C; 81.7 g/100 ml water @ 100 deg. C..
Section 10. Stability and Reactivity Data
The product is stable.
Instability Temperature Not available.
Conditions of Instability Incompatible materials, heat, moisture, air, dust generation.
Incompatibility with various Reactive with oxidizing agents, acids.
Non-corrosive in presence of glass.
Special Remarks on Moisture sensitive Air sensitive.
Reactivity It slowly oxidizes to sodium sulfate upon exposure to air and moisture.
Incompatible with sodium nitrite
Special Remarks on
Polymerization Will not occur.
Section 11. Toxicological Information
Routes of Entry Inhalation. Ingestion.
Toxicity to Animals Acute oral toxicity (LD50): 1131 mg/kg [Rat].
Acute dermal toxicity (LD50): >1000 mg/kg [Guinea pig].
Chronic Effects on Humans CARCINOGENIC EFFECTS: 3 (Not classifiable for human.) by IARC.
MUTAGENIC EFFECTS: Mutagenic for bacteria and/or yeast.
May cause damage to the following organs: upper respiratory tract, skin, eyes.
Other Toxic Effects on Slightly hazardous in case of skin contact (irritant), of ingestion, of inhalation.
Special Remarks on Not available.
Toxicity to Animals
Special Remarks on
May affect genetic material (mutagenic) based on animal test data.
Chronic Effects on Humans May cause adverse reproductive effects based on animal test data.
Special Remarks on other Acute Potential Health Effects:
Toxic Effects on Humans Skin: May cause skin irritation.
Eyes: May cause eye irritaiton.
Inhalation: May cause respiratory tract irritation with coughing and wheezing.
Ingestion: May be harmful if swallowed. May cause gastrointestinal tract irritation by liberation of Sulfurous
acid. Symptoms may include abdominal pain, nausea, vomiting, diarrhea, violent colic, and possible gastric
hemorrhaging. May affect behavior/central nervous system and cause central nervous system
depression/seizures. It may also affect the cardiovasular system (hypotension, tachycardia, cardiovascular
collapse). Ingestion of sulfite compounds may cause a severe allergic reaction (anaphylactoid symptoms) in
sensitive individuals and some asthmatics.
Chronic Potential Health Effects:
Skin: Prolonged or repeated skin contact may cause allergic dermatitis.
Ingestion: Prolonged or repeated ingestion may cause anorexia, and affect the liver, urinary system, and
metabolism (weight loss).
Inhalation: Prolonged or repeated inhalation may irritate the lungs, may cause bronchitis to develop with
cough, phlegm and/or shortness of breath.
Future exposures may also cause asthma like allergy with coughing, shortness of breath, wheezing and/or
Section 12. Ecological Information
Ecotoxicity Not available.
BOD5 and COD Not available.
Products of Biodegradation Possibly hazardous short term degradation products are not likely. However, long term degradation products
Toxicity of the Products The products of degradation are less toxic than the product itself.
Special Remarks on the Not available.
Products of Biodegradation
Section 13. Disposal Considerations
Waste must be disposed of in accordance with federal, state and local environmental
Section 14. Transport Information
DOT Classification Not a DOT controlled material (United States).
Identification Not applicable.
Special Provisions for Not applicable.
Section 15. Other Regulatory Information and Pictograms
Federal and State Connecticut hazardous material survey.: Sodium metabisulfite
Illinois toxic substances disclosure to employee act: Sodium metabisulfite
Rhode Island RTK hazardous substances: Sodium metabisulfite
Pennsylvania RTK: Sodium metabisulfite
Minnesota: Sodium metabisulfite
Massachusetts RTK: Sodium metabisulfite
New Jersey: Sodium metabisulfite
California Director's List of Hazardous Substances: Sodium metabisulfite
TSCA 8(b) inventory: Sodium metabisulfite
TSCA 4(a) ITC priority list: Sodium metabisulfite
TSCA 8(a) PAIR: Sodium metabisulfite
TSCA 8(d) H and S data reporting: Sodium metabisulfite: effective: 1/26/94; sunset: 6/30/98
California California prop. 65: This product contains the following ingredients for which the State of California has
found to cause cancer which would require a warning under the statute: No products were found.
California prop. 65: This product contains the following ingredients for which the State of California has
found to cause birth defects which would require a warning under the statute: No products were found.
Other Regulations OSHA: Hazardous by definition of Hazard Communication Standard (29 CFR 1910.1200).
EINECS: This product is on the European Inventory of Existing Commercial Chemical Substances (EINECS
Canada: Listed on Canadian Domestic Substance List (DSL).
China: Listed on National Inventory.
Japan: Listed on National Inventory (ENCS).
Korea: Listed on National Inventory (KECI).
Philippines: Listed on National Inventory (PICCS).
Australia: Listed on AICS.
WHMIS (Canada) Not controlled under WHMIS (Canada).
DSCL (EEC) R22- Harmful if swallowed. S46- If swallowed, seek medical advice
R31- Contact with acids liberates immediately and show this container or label.
HMIS (U.S.A.) 1 National Fire Protection
0 Association (U.S.A.)
1 0 Reactivity
Dust respirator. Be sure to use an
approved/certified respirator or
equivalent. Wear appropriate
respirator when ventilation is
SECTION 16 - ADDITIONAL INFORMATION