=====================  Product Identification  =====================

MSDS NAME:STOP SOLUTION, S3282
NIIN:00N091266
Status Code:A
MSDS Number: CJJSD
=== Responsible Party ===
Company:SIGMA CHEMICAL COMPANY
Box:14508
City:ST LOUIS
State:MO
ZIP:63178
Country:US
Info Phone Num:800-325-3010(US); 314-771-5750
Emergency Phone Num:1-314-771-5765
CAGE:21076
=== Contractor Identification ===
Company:SIGMA CHEMICAL COMPANY
Address:3050 SPRUCE ST
Box:14508
City:ST LOUIS
State:MO
ZIP:63178
Country:US
Phone:314-771-5765
CAGE:21076

=============  Composition/Information on Ingredients  =============

Name:PHOSPHORIC ACID, TRISODIUM SALT, DODECAHYDRATE
CAS:10101-89-0
RTECS #:TC9575000
EPA Rpt Qty:5000 LBS
DOT Rpt Qty:5000 LBS

=====================  Hazards Identification  =====================

LD50 LC50 Mixture:SEE TOXICOLOGICAL INFORMATION.
Routes of Entry: Inhalation:YES  Skin:YES  Ingestion:YES
Reports of Carcinogenicity:NTP:NO    IARC:NO	OSHA:NO
Health Hazards Acute and Chronic:ACUTE: HARMFUL IF SWALLOWED, INHALED
    OR ABSORBED THROUGH SKIN. MATERIAL IS EXTREMELY DESTRUCTIVE TO
    TISSUE OF THE MUCOUS MEMBRANES AND UPPER RESPIRATORY TRACT, EYES
    AND SKIN. INHALATION MAY BE FATAL A S A RESULT OF SPASM,
    INFLAMMATION AND EDEMA OF THE LARYNX AND BRONCHI, CHEMICAL
    PNEUMONITIS AND PULMONARY EDEMA. SYMPTOMS OF EXPOSURE MAY INCLUDE
    BURNING SENSATION, COUGHING, WHEEZING, LARYNGITIS, SHO RTNESS OF
    BREATH, HEADACHE, NAUSEA AND VOMITING. TO THE BEST OF MFR'S
    KNOWLEDGE, THE CHEMICAL, PHYSICAL AND TOXICOLOGICAL PROPERTIES HAVE
    NOT BEEN THOROUGHLY INVESTIGATED.
Effects of Overexposure:SEE HEALTH HAZARDS.

=======================  First Aid Measures  =======================

Eyes: IMMEDIATELY FLUSH WITH COPIOUS AMOUNTS OF WATER FOR AT
    LEAST 15 MINUTES. ASSURE ADEQUATE FLUSHING OF EYES BY SEPARATING
    EYELIDS WITH FINGERS. SKIN: IMMEDIATELY FLUSH WITH COPIOUS AMOUNTS
    OF WATE R FOR AT LEAST 15 MINUTES WHILE REMOVING CONTAMINATED
    CLOTHING AND SHOES. WASH CONTAMINATED CLOTHING BEFORE REUSE.
    INHALATION: REMOVE TO FRESH AIR. IF NOT BREATHING GIVE ARTIFICIAL
    RESPIRATION. IF BRE ATHING IS DIFFICULT, GIVE OXYGEN. INGESTION: IF
    SWALLOWED, WASH OUT MOUTH WITH WATER PROVIDED PERSON IS CONSCIOUS.
    CALL MD.

=====================  Fire Fighting Measures  =====================

Extinguishing Media:NONCOMBUSTIBLE. USE EXTINGUISHING MEDIA APPROPRIATE
    TO SURROUNDING FIRE CONDITIONS.
Fire Fighting Procedures:USE NIOSH APPROVED SCBA AND FULL PROTECTIVE
    EQUIPMENT .
Unusual Fire/Explosion Hazard:EMITS TOXIC FUMES UNDER FIRE CONDITIONS.

==================  Accidental Release Measures  ==================

Spill Release Procedures:WEAR NIOSH APPROVED SELF-CONTAINED BREATHING
    APPARATUS, RUBBER BOOTS AND HEAVY RUBBER GLOVES. SWEEP UP, PLACE IN
    A BAG AND HOLD FOR WASTE DISPOSAL. AVOID RAISING DUST. VENTILATE
    AREA AND WASH SPILL SI TE AFTER MATERIAL PICKUP IS COMPLETE.

======================	Handling and Storage  ======================

Handling and Storage Precautions:DO NOT BREATHE DUST. AVOID CONTACT
    WITH EYES, SKIN AND CLOTHING. AVOID PROLONGED OR REPEATED EXPOSURE.
    CORROSIVE, CAUSES BURNS. KEEP TIGHTLY CLOSED. STORE IN A COOL, DRY
    PLACE.

=============  Exposure Controls/Personal Protection  =============

Respiratory Protection:WEAR APPROPRIATE NIOSH APPROVED RESPIRATOR.
Ventilation:MECHANICAL EXHAUST REQUIRED.
Protective Gloves:CHEMICAL-RESISTANT GLOVES.
Eye Protection:ANSI APPROVED CHEMICAL WORKERS GOGGLES & FULL LENGTH
    FACESHIELD .
Other Protective Equipment:ANSI APPROVED EYE WASH & DELUGE SHOWER .
    WEAR SUITABLE PROTECTIVE CLOTHING.
Work Hygienic Practices:WASH THOROUGHLY AFTER HANDLING.
Supplemental Safety and Health

==================  Physical/Chemical Properties  ==================

Appearance and Odor:SOLID.

=================  Stability and Reactivity Data  =================

Stability Indicator/Materials to Avoid:YES
STRONG ACIDS.
Hazardous Decomposition Products:NATURE OF DECOMPOSITION PRODUCTS NOT
    KNOWN.

===================  Toxicological Information	===================

Toxicological Information:LD50:(ORAL,RAT) 7400 MG/KG - AIHAAP
    30,470,69. LD50:(IPR,MUS) 430 MG/KG - COREAF 257,791,63. ONLY
    SELECTED REGISTRY OF TOXIC EFFECTS OF CHEMICAL SUBSTANCES (RTECS)
    DATA IS PRESENTED HERE. SEE ACTUAL E NTRY IN RTECS FOR COMPLETE
    INFORMATION.

=====================  Ecological Information  =====================

Ecological:DATA NOT YET AVAILABLE.

====================  Disposal Considerations  ====================

Waste Disposal Methods:FOR SM QTYS: CAUTIOUSLY ADD TO LG STIRRED EXCESS
    OF WATER. ADJUST PH TO NEUTRAL, SEPARATE ANY INSOLUBLE SOLIDS/LIQS
    & PACKAGE THEM FOR HAZ-WASTE DISP. FLUSH AQ SOLN DOWN DRAIN
    W/PLENTY OF WATER. HYDRO LYSIS & NEUTRALIZATION RXNS MAY GENERATE
    HEAT & FUMES WHICH CAN BE CONTROLLED BY RATE OF ADDN. OBSER VE ALL
    FED, STATE & LOC ENVIRON REGS.

===================  MSDS Transport Information  ===================

Transport Information:CONTACT SIGMA CHEMICAL COMPANY FOR TRANSPORTATION
    INFORMATION.

=====================  Regulatory Information  =====================

State Regulatory Information:RTECS DATA AND SYNONYMS SUPPLIED ARE FOR A
    CLOSELY
RELATED COMPOUND. CALIFORNIA PROPOSITION 65: THIS
PRODUCT CONTAINS CHEMICAL(S) KNOWN TO THE STATE
OF CALIFORNIA TO CAUSE DEVELOPMENTAL TOXICITY.

=======================  Other Information  =======================

 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.

*** END OF RECORD ***