Sodium Thiosulfate Solution (MSDS)

MATERIAL SAFETY DATA SHEET

Section 1: PRODUCT AND COMPANY IDENTIFICATION

Company Identification: 2350 114th Street
Grand Prairie, Texas 75050
USA
Tel: 817-421-3271
Fax: 817-887-3737

For emergencies, call Chemtrec anytime at 1-800-424-9300. Outside US, call Chemtrec Collect at 703-527-3887.
Product Name: CELCHEM 31202-39 Sodium Thiosulfate Solution
Issue Date: 9/10/2002

2. Composition / Information on Components

Typical CompositionCAS #’s%
Na2S2O3 7772-98-7 29-31
Water 7732-18-5 Balance

Exposure Standard: Not Found
Hazard Ratings: Health = 2 Flammability = 0 Reactivity = 2 0 = Least; 1 = Slight; 2 = Moderate; 3 = High; 4 = Extreme;

I

II. PHYSICAL DATA

Appearance and Odor: Clear colorless to amber solution. Sulfur like odor.
Boiling Point: 217 F
Melting Point: N/A
Vapor Density (air = 1): N/A
Vapor Pressure: N/A
Solubility in water: 100%
Specific Gravity (H2O = 1): 1.28
pH: 8 – 10.5
Other (i.e. wt. per gallon): 10.8 lb/gallon typical
MSDS No. 037 Page 2

 

IV. FIRE AND EXPLOSION INFORMATION

Flash Point: N/A
Flammable Limits: N/A
Extinguishing Media: N/A
Special Firefighting Procedures: For fires involving this material wear SCBA.

 

V. REACTIVITY DATA

Stability: Stable
Conditions To Avoid:Sulfur dioxide may be released if allowed to contact strong acids or if dried material is overheated.
Incompatibility: Strong acids.
Hazardous Decomposition Products: If dried material is overheated, sulfur dioxide is given off. Hazardous
Polymerization: Will not occur.

 

VI. PERSONAL PROTECTIVE EQUIPMENT REQUIREMENTS

Ventilation: Use in well ventilated areas.
Eye: Goggles or full face shield.
Skin: Appropriate clothing/rubber or plastic gloves. Avoid contact with skin.
Respiratory: None required under normal conditions.

 

VII. HEALTH AND FIRST AID PHYSIOLOGICAL & HEALTH EFFECTS Routes of Entry:

Eyes: May cause slight irritation.
Skin: Moderate to low irritant.
Inhalation: N/A
Ingestion: Up to 12 grams of sodium thiosulfate can be taken daily by mouth with no ill effects except catharsis.
MSDS No. 037 Page 3
Toxicity: Large doses internally have a cathartic action.
EMERGENCY & FIRST AID PROCEDURES
Eyes: Flush with water for at least 15 minutes. Contact a physician.
Skin: Wash thoroughly with water. If irritation persists, contact physician.
Inhalation: Not found.
Ingestion: If gross amounts are swallowed, induce vomiting. Contact a physician.

 

VIII. SPILL AND LEAK PROCEDURES

Precaution if Spilled or Released: Flush small spills with water. For larger spills, recover as much as possible then flush area with water. Comply with all federal, state and local regulations when disposing of waste.
Neutralizing Chemicals: None.
Waste Disposal Methods: Comply with federal, state and local regulations.
Reportable Quantities: N/A

 

IX. TRANSPORTATION REQUIREMENTS

DOT Proper Shipping Name: Sodium Thiosulfate Solution
DOT Classification: Non hazardous
UN/NA Identification Number: N/A
Packing Group: N/A
Other Labels: N/A

 

X. SPECIAL PRECAUTIONS

Handling and Storage Precautions: Use general safe work practices when handling this chemical.