Name:
Sodium metabisulfite reagent ACS 97+%
Synonym:
Sodium pyrosulfite; Disodium disulfite; Pyrosulfurous acid, disodium salt
CAS:
7446-09-5
Section 1 - Chemical Product
MSDS Name:Sodium metabisulfite reagent ACS 97+%
Synonym:Sodium pyrosulfite; Disodium disulfite; Pyrosulfurous acid, disodium salt
Synonym:Sodium pyrosulfite; Disodium disulfite; Pyrosulfurous acid, disodium salt
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 7446-09-5 | Sulfur dioxide | - | 231-195-2 |
| Hazard Symbols: XN Risk Phrases: |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Harmful if swallowed. Contact with acids liberates toxic gas. Risk of serious damage to eyes.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation. May cause an allergic reaction in certain individuals.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.
Inhalation:
May cause allergic respiratory reaction. May cause effects similar to those described for ingestion. Inhalation of dust may cause respiratory tract irritation.
Chronic:
Prolonged or repeated skin contact may cause dermatitis. Repeated or prolonged exposure may cause allergic reactions in sensitive individuals.
Harmful if swallowed. Contact with acids liberates toxic gas. Risk of serious damage to eyes.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation. May cause an allergic reaction in certain individuals.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.
Inhalation:
May cause allergic respiratory reaction. May cause effects similar to those described for ingestion. Inhalation of dust may cause respiratory tract irritation.
Chronic:
Prolonged or repeated skin contact may cause dermatitis. Repeated or prolonged exposure may cause allergic reactions in sensitive individuals.
Section 4 - FIRST AID MEASURES
Eyes: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical aid.
Skin:
In case of contact, flush skin with plenty of water. Remove contaminated clothing and shoes. Get medical aid if irritation develops and persists. Wash clothing before reuse.
Ingestion:
If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.
Skin:
In case of contact, flush skin with plenty of water. Remove contaminated clothing and shoes. Get medical aid if irritation develops and persists. Wash clothing before reuse.
Ingestion:
If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.
Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Substance is noncombustible.
Extinguishing Media:
Use water fog, dry chemical, carbon dioxide, or regular foam.
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Substance is noncombustible.
Extinguishing Media:
Use water fog, dry chemical, carbon dioxide, or regular foam.
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Clean up spills immediately, observing precautions in the Protective Equipment section. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation. Do not get water inside containers.
Spills/Leaks:
Clean up spills immediately, observing precautions in the Protective Equipment section. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation. Do not get water inside containers.
Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Use with adequate ventilation.
Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid breathing dust.
Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from strong acids. Store protected from moisture. Keep away from oxidizing agents.
Wash thoroughly after handling. Use with adequate ventilation.
Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid breathing dust.
Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from strong acids. Store protected from moisture. Keep away from oxidizing agents.
Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits.
Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits.
Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Solid
Color: white to yellow
Odor: sulfur dioxide odor
pH: 4.3 (1% sol.)
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: decomposes
Freezing/Melting Point: > 302 deg F
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: > 302 deg F
Solubility in water: Soluble.
Specific Gravity/Density: 1.48
Molecular Formula: Na2S2O5
Molecular Weight: 190.10
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable. However, may decompose if heated. Oxidizes when exposed to air. Moisture sensitive.
Conditions to Avoid:
Dust generation, moisture, exposure to air, excess heat, Corrosive to aluminum in aqueous solution..
Incompatibilities with Other Materials:
Strong oxidizing agents, acids.
Hazardous Decomposition Products:
Oxides of sulfur, toxic fumes of sodium oxide.
Hazardous Polymerization: Has not been reported.
Stable. However, may decompose if heated. Oxidizes when exposed to air. Moisture sensitive.
Conditions to Avoid:
Dust generation, moisture, exposure to air, excess heat, Corrosive to aluminum in aqueous solution..
Incompatibilities with Other Materials:
Strong oxidizing agents, acids.
Hazardous Decomposition Products:
Oxides of sulfur, toxic fumes of sodium oxide.
Hazardous Polymerization: Has not been reported.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 7446-09-5: WS4550000 CAS# 7681-57-4: UX8225000 LD50/LC50:
Not available.
Not available.
Carcinogenicity:
Sulfur dioxide - Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
Sodium metabisulfite - Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
Other:
See actual entry in RTECS for complete information.
CAS# 7446-09-5: WS4550000 CAS# 7681-57-4: UX8225000 LD50/LC50:
Not available.
Not available.
Carcinogenicity:
Sulfur dioxide - Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
Sodium metabisulfite - Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
IATA
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing Group:
IMO
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing Group:
RID/ADR
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing group:
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN
Risk Phrases:
R 22 Harmful if swallowed.
R 31 Contact with acids liberates toxic gas.
R 41 Risk of serious damage to eyes.
Safety Phrases:
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 39 Wear eye/face protection.
S 46 If swallowed, seek medical advice immediately
and show this container or label.
WGK (Water Danger/Protection)
CAS# 7446-09-5: 1
CAS# 7681-57-4: 1
United Kingdom Occupational Exposure Limits
United Kingdom Maximum Exposure Limits
Canada
None of the chemicals in this product are listed on the DSL/NDSL list.
CAS# 7446-09-5 is not listed on Canadas Ingredient Disclosure List.
CAS# 7681-57-4 is not listed on Canadas Ingredient Disclosure List.
Exposure Limits
CAS# 7446-09-5: OEL-ARAB Republic of Egypt:TWA 5 ppm (13 mg/m3)
OEL-AUSTRALIA:TWA 2 ppm (5 mg/m3);STEL 5 ppm (10 mg/m3)
OEL-BELGIUM:TWA 2 ppm (5.2 mg/m3);STEL 5 ppm (13 mg/m3)
OEL-CZECHOSLOVAKIA:TWA 5 mg/m3;STEL 10 mg/m3 JAN9
OEL-DENMARK:TWA 2 ppm (5 mg/m3)
OEL-FINLAND:TWA 2 ppm (5 mg/m3);STEL 5 ppm (13 mg/m3)
OEL-FRANCE:TWA 2 ppm (5 mg/m3);STEL 5 ppm (10 mg/m3)
OEL-GERMANY:TWA 2 ppm (5 mg/m3)
OEL-HUNGARY:TWA 3 mg/m3;STEL 6 mg/m3
OEL-THE NETHERLANDS:TWA 2 ppm (5 mg/m3)
OEL-THE PHILIPPINES:TWA 5 ppm (13 mg/m3)
OEL-POLAND:TWA 20 mg/m3
OEL-RUSSIA:STEL 10 mg/m3;Skin
OEL-SWEDEN:TWA 2 ppm (5 mg/m3);STEL 5 ppm (13 mg/m3)
OEL-SWITZERLAND:TWA 2 ppm (5 mg/m3);STEL 4 ppm (1 mg/m3)
OEL-THAILAND:TWA 5 ppm (13 mg/m3)
OEL-TURKEY:TWA 5 ppm (13 mg/m3)
OEL-UNITED KINGDOM:TWA 2 ppm (5 mg/m3);STEL 5 ppm (13 mg/m3)
OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGI TLV
CAS# 7681-57-4: OEL-AUSTRALIA:TWA 5 mg/m3
OEL-BELGIUM:TWA 5 mg/m3
OEL-DENMARK:TWA 5 mg/m3
OEL-FRANCE:TWA 5 mg/m3
OEL-THE NETHERLANDS:TWA 5 mg/m3
OEL-SWITZERLAND:TWA 5 mg/m3
OEL-UNITED KINGDOM:TWA 5 mg/m3
OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGI TLV
US FEDERAL
TSCA
CAS# 7446-09-5 is not listed on the TSCA inventory.
It is for research and development use only.
CAS# 7681-57-4 is not listed on the TSCA inventory.
It is for research and development use only.
