Product ID:SODIUM THIOSULFATE STANDARD SOLUTION, (SUPP
MSDS Date:01/07/1992
FSC:6850
NIIN:00N038528
MSDS Number: BRFBW

HACH CO

AMES, IA 50010
US

Emergency Phone: 303-623-5716

Info Phone: 800-227-4224

Cage: 4T252

HACH COMPANY

907 AMES, IA 50010 US

Telephone: 800-227-4224

Cage: 4T252

1,2-PROPANEDIOL; (PROPYLENE GYLCOL)

CAS: 57-55-6

RTECS: TY2000000

Fraction By Weight: 20-30%

1)

CAS: 7757-82-6

RTECS: WE1650000

Fraction By Weight: 1-5%

THIOSULFURIC ACID, DISODIUM SALT; (SODIUM THIOSULFATE)

CAS: 7772-98-7

RTECS: XN6476000

Fraction By Weight: <1%

OTHER COMPONENTS (EACH)

Fraction By Weight: <1%

WATER; (DEMINERALIZED)

CAS: 7732-18-5

RTECS: ZC0110000

Fraction By Weight: TO 100%

LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:YES Skin:NO Ingestion:YES
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:THIS PRODUCT MAY BE CORROSIVE TO EYES,
IRRITATING TO SKIN. ACUTE/CHRONIC: NOT DETERMINED. OVEREXPOSURE:
MAY CAUSE EYE BURNS, SKIN IRRITATION.
Explanation of Carcinogenicity:NOT RELEVANT
Effects of Overexposure:SEE HEALTH HAZARDS.
Medical Cond Aggravated by Exposure:NONE REPORTED.

First Aid:EYE: IMMEDIATELY FLUSH WITH WATER FOR AT LEAST 15 MINUTES.
CALL PHYSICIAN. SKIN: IMMEDIATELY FLUSH WITH WATER FOR AT LEAST 15
MINUTES. REMOVE CONTAMINATED CLOTHING. CALL PHYSICIAN. INHAL:
REMOVE TO FR ESH AIR. INGEST: CALL MD IMMED .

Flash Point Method:OC
Flash Point:>212F,>100C
Extinguishing Media:WATER, DRY CHEMICAL, ALCOHOL FOAM OR CARBON
DIOXIDE.
Fire Fighting Procedures:WEAR NIOSH/MSHA APPROVED SCBA AND FULL
PROTECTIVE EQUIPMENT .
Unusual Fire/Explosion Hazard:NONE.

Spill Release Procedures:DILUTE WITH WATER. POUR DOWN DRAIN W/EXCESS
WATER.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:STORE IN A COOL, DRY PLACE AWAY FROM
OXIDIZERS. AVOID CONTACT W/EYES, SKIN AND CLOTHING. DO NOT BREATHE
MIST/VAPOR.
Other Precautions:NONE SPECIFIED BY MANUFACTURER.

Respiratory Protection:USE NIOSH/MSHA APPROVED RESPIRATOR APPROPRIATE
FOR EXPOSURE OF CONCERN .
Ventilation:ADEQUATE VENTILATION.
Protective Gloves:DISPOSABLE GLOVES.
Eye Protection:CHEMICAL WORKERS GOGGLES .
Other Protective Equipment:EMERGENCY EYE BATH AND DELUGE SHOWER .
Work Hygienic Practices:WASH THOROUGHLY AFTER HANDLING.
Supplemental Safety and Health
MFR TRADE NAME/PART NO: STABILIZED, 0.0250N, 24093.

Boiling Pt:B.P. Text:210F,99C
Melt/Freeze Pt:M.P/F.P Text:19.4F,-7C
Spec Gravity:1.05
pH:9.9
Evaporation Rate & Reference:0.96
Solubility in Water:SOLUBLE
Appearance and Odor:CLEAR, COLORLESS LIQUID, SWEET ODOR.

Stability Indicator/Materials to Avoid:YES
CONTACT W/OXIDIZERS.
Stability Condition to Avoid:EXCESSIVE HEAT.
Hazardous Decomposition Products:MAY EMIT TOXIC FUMES OF CARBON OXIDES
AND SODIUM OXIDES IN FIRE.

Waste Disposal Methods:DISPOSE OF IN ACCORDANCE WITH ALL FEDERAL,
STATE, AND LOCAL REGULATIONS.

Disclaimer (provided with this information by the compiling agencies):
This information is formulated for use by elements of the Department
of Defense. The United States of America in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. Any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.