Sodium Thiosulfate 0.1 Normal Solution

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid. 

Skin

Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. 

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately. Induce vomiting by giving one teaspoon of Syrup of Ipecac.

Inhalation

Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. Do NOT use mouth-to-mouth resuscitation. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.

Notes to Physician

Effects may be delayed. Ethanol may inhibit methanol metabolism.

General Information

General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. 

Containers can build up pressure if exposed to heat and/or fire. As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Water runoff can cause environmental damage. Dike and collect water used to fight fire. Vapors can travel to a source of ignition and flash back. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Flammable Liquid. Can release vapors that form explosive mixtures at temperatures above the flashpoint. Use water spray to keep fire-exposed containers cool. Water may be ineffective. Material is lighter than water and a fire may be spread by the use of water. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas. May be ignited by heat, sparks, and flame.

Extinguishing Media

Extinguishing Media: For small fires, use water spray, dry chemical, carbon dioxide or chemical foam. 
Flash Point: Not applicable. 
Autoignition Temperature: Not applicable. 
Explosion Limits, Lower:Not available. Upper: Not available. 
NFPA Rating: (estimated) Health: 1; Flammability: 0; Instability: 0 

General Information

Use proper personal protective equipment as indicated in Section 8.

Spills/Leaks

Spills/Leaks: Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. 

Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Do not use combustible materials such as saw dust. Provide ventilation. A vapor suppressing foam may be used to reduce vapors. 

Handling

Avoid prolonged or repeated contact with skin. Avoid ingestion and inhalation. Use with adequate ventilation. 

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Ground and bond containers when transferring material. Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, direct sunlight. Do not ingest or inhale. Use only in a chemical fume hood. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.

Storage

Storage: Store in a cool, dry place. Store in a tightly closed container. Do not store in aluminum or lead containers.

Engineering Controls

Use adequate ventilation to keep airborne concentrations low. Expos

Exposure Limits

Chemical Name                          ACGIH               NIOSH            OSHA - Final PELs 
Water                                         none listed          none listed       none listed 
Sodium thiosulfate, pentahydrate none listed       none listed       none listed

OSHA Vacated PELs

Water ::: No OSHA Vacated PELs are listed for this chemical.  
Sodium thiosulfate, pentahydrate ::: No OSHA Vacated PELs are listed for this chemical.

Personal Protective Equipment

Eyes

Wear chemical goggles. Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's 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. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Physical State

Liquid

Appearance

Clear, colorless

Odor

None reported  - weak odor

pH

Not available.

Vapor Pressure

 14 mm Hg

Vapor Density

Not available

Evaporation Rate

>1 (ether=1)

Viscosity

Not available

Boiling Point

212 deg F

Freezing/Melting Point

32 deg F

Decomposition Temperature

Not available.

Solubility

Soluble

Specific Gravity/Density

1.0-1.1

Molecular Formula

Mixture

Molecular Weight

Not available.

Chemical Stability

Stable under normal temperatures and pressures.

Conditions to Avoid

High temperatures, incompatible materials, ignition sources, oxidizers.

Incompatibilities with Other Materials

Sodium thiosulfate violently reacts with sodium nitrite. It is also incompatible with strong oxidizers, acids.

Hazardous Decomposition Products

Hydrogen sulfide, sodium oxide , Hazardous Polymerization: Has not been reported.

RTECS#:
RTECS#: CAS# 7732-18-5: ZC0110000 CAS# 10102-17-7: WE6660000 LD50/LC50: CAS# 7732-18-5: Oral, rat: LD50 = >90 mL/kg; . CAS# 10102-17-7:

Carcinogenicity: CAS# 7732-18-5: Not listed by ACGIH, IARC, NTP, or CA Prop 65. 
                         CAS# 10102-17-7: Not listed by ACGIH, IARC, NTP, or CA Prop 65. 
Epidemiology: No data available. 
Teratogenicity: No data available. 
Reproductive Effects: No data available. 
Mutagenicity: No data available. 
Neurotoxicity: No data available. Other Studies: 

US DOT

IATA

RID/ADR

IMO

CanadaTDG

Shipping Name:

Not regulated as a hazardous material

Not regulated as a hazardous material

Not regulated as a hazardous material

Not regulated as a hazardous material

No information available

TSCA

CAS# 7732-18-5 is listed on the TSCA inventory. CAS# 10102-17-7 is not on the TSCA Inventory because it is a hydrate. It is considered to be listed if the CAS number for the anhydrous form is on the inventory (40CFR720.3(u)(2)). Health & Safety Reporting List None of the chemicals are on the Health & Safety Reporting List. Chemical Test Rules None of the chemicals in this product are under a Chemical Test Rule. Section 12b None of the chemicals are listed under TSCA Section 12b. TSCA Significant New Use Rule None of the chemicals in this material have a SNUR under TSCA. CERCLA Hazardous Substances and corresponding RQs None of the chemicals in this material have an RQ.

SARA

None of the chemicals in this product have a TPQ. Section 313 No chemicals are reportable under Section 313. Clean Air Act: This material does not contain any hazardous air pollutants. This material does not contain any Class 1 Ozone depletors. This material does not contain any Class 2 Ozone depletors. Clean Water Act: None of the chemicals in this product are listed as Hazardous Substances under the CWA. None of the chemicals in this product are listed as Priority Pollutants under the CWA. None of the chemicals in this product are listed as Toxic Pollutants under the CWA.

Clean Air Act

CAS# 67-56-1 is listed as a hazardous air pollutant (HAP). This material does not contain any Class 1 Ozone depletors. This material does not contain any Class 2 Ozone depletors. Clean Water Act: None of the chemicals in this product are listed as Hazardous Substances under the CWA. None of the chemicals in this product are listed as Priority Pollutants under the CWA. None of the chemicals in this product are listed as Toxic Pollutants under the CWA.

OSHA

None of the chemicals in this product are considered highly hazardous by OSHA.

STATE

CAS# 7732-18-5 is not present on state lists from CA, PA, MN, MA, FL, or NJ. 
CAS# 10102-17-7 is not present on state lists from CA, PA, MN, MA, FL, or NJ.

European/International Regulations

European/International Regulations European Labeling in Accordance with EC Directives Hazard Symbols: Not available. Risk Phrases: Safety Phrases: S 24/25 Avoid contact with skin and eyes. WGK (Water Danger/Protection) CAS# 7732-18-5: No information available. CAS# 10102-17-7: 0 Canada - DSL/NDSL CAS# 7732-18-5 is listed on Canada's DSL List. CAS# 10102-17-7 is listed on Canada's DSL List. Canada - WHMIS This product has a WHMIS classification of Not controlled.. This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations and the MSDS contains all of the information required by those regulations. Canadian Ingredient Disclosure List