Product ID:SODIUM THIOSULFATE STANDARD SOLUTION, 0.025N
MSDS Date:04/25/1995
FSC:6810
NIIN:01-353-5928
MSDS Number: CDVVT

HACH CO.

5600 LINDBERGH DR
LOVELAND, CO 80539-0389
US

Emergency Phone: 303-962-6721

Info Phone: 800-227-4224

Cage: 91224

HACH COMPANY

907 AMES, IA 50010 US

Telephone: 800-227-4224

Cage: 4T252

SODIUM THIOSULFATE,5-HYDRATE

CAS: 10102-17-7

RTECS: WE6660000

Fraction By Weight: <5%

SODIUM HYDROXIDE (CERCLA)

CAS: 1310-73-2

RTECS: WB4900000

Fraction By Weight: <1%

OSHA PEL 2 MG/M3

ACGIH TLV: C 2 MG/M3; 9495

EPA Report Quantity: 1000 LBS

DOT Report Quantity: 1000 LBS

DEMINERALIZED WATER

CAS: 7732-18-5

RTECS: ZC0110000

Fraction By Weight: TO 100%

LD50 LC50 Mixture:PRODUCT'S LD50 (ORAL RAT) WAS NOT STATED
Routes of Entry: Inhalation:YES Skin:YES Ingestion:YES
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:ACUTE-MODERATELY TOXIC. MAY CAUSE EYE
& SKIN IRRITATION. CHRONIC-NOT DETERMINED.
Explanation of Carcinogenicity:MFR SAID "NOT APPLICABLE" UNDER CANCER
INFORMATION.
Effects of Overexposure:MAY CAUSE EYE & SKIN IRRITATION.
Medical Cond Aggravated by Exposure:PRE-EXISTING EYE & SKIN CONDITIONS.

Flash Point:N/A.
Autoignition Temp:Autoignition Temp Text:N/A.
Lower Limits:N/A.
Upper Limits:N/A.
Extinguishing Media:N/A.
Fire Fighting Procedures:MFR GAVE NO INFORMATION OF MSDS.
Unusual Fire/Explosion Hazard:MAY EMIT TOXIC FUMES IN A FIRE.

Spill Release Procedures:COVER SPILL W/CITRIC ACID OR OTHER ACIDIC
MATERIAL. SCOOP SLURRY INTO BEAKER, ADD WATER & NEUTRALIZE TO PH 6
TO PH 9. FLUSH NEUTRALIZED WASTE TO DRAIN W/WATER.
Neutralizing Agent:CITRIC ACID OR OTHER ACIDIC MATERIAL.

Handling and Storage Precautions:MFR GAVE NO INFORMATION OF MSDS.
Other Precautions:AVOID CONTACT EYES, SKIN. WASH THOROUGHLY AFTER
HANDLING.

Respiratory Protection:MFR GAVE NO INFORMATION ON MSDS.
Ventilation:ADEQUATE VENTILATION.
Protective Gloves:DISPOSABLE LATEX GLOVES.
Eye Protection:LAB GRADE GOGGLES.
Other Protective Equipment:LAB COAT
Work Hygienic Practices:MFR GAVE NO INFORMATION OF MSDS.
Supplemental Safety and Health
NONE

HCC:N1
NRC/State Lic Num:NONE
Boiling Pt:B.P. Text:>212F,>100C
Melt/Freeze Pt:M.P/F.P Text:23.0F,-5.0C
Vapor Pres:N/D
Vapor Density:N/D
Spec Gravity:0.987
pH:11.2
Evaporation Rate & Reference:0.66
Solubility in Water:SOLUBLE
Appearance and Odor:CLEAR, COLORLESS LIQUID W/NO ODOR.

Stability Indicator/Materials to Avoid:YES
MFR GAVE NO INFORMATION OF MSDS.
Stability Condition to Avoid:MFR GAVE NO INFORMATION OF MSDS.
Hazardous Decomposition Products:MAY EMIT TOXIC FUMES OF SULFUR OXIDES
IN FIRE.
Conditions to Avoid Polymerization:WILL NOT OCCUR.

Waste Disposal Methods:DISPOSE OF I/A/W ALL FEDERAL, STATE & LOCAL
REGULATIONS.

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