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

MSDS NAME:SILVER NITRATE SOLUTION HT101-2, COMPONENT OF HT101A
Status Code:A
MSDS Number: CLCHD
=== Responsible Party ===
Company:SIGMA CHEMICAL COMPANY
Box:14508
City:ST LOUIS
State:MO
ZIP:63178
Country:US
Info Phone Num:800-325-3010
Emergency Phone Num:(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:SILVER NITRATE. (EC NO: 231-853-9)
CAS:7761-88-8
RTECS #:VW4725000
OSHA PEL:0.01 MG/M3
ACGIH TLV:0.01 MG/M3
EPA Rpt Qty:1 LB
DOT Rpt Qty:1 LB

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

Routes of Entry: Inhalation:YES  Skin:YES  Ingestion:YES
Reports of Carcinogenicity:NTP:NO    IARC:NO	OSHA:NO
Health Hazards Acute and Chronic:LABEL PRECAUTIONARY STATEMENT:
    HARMFUL. HARMFUL IF SWALLOWED.  IRRITATING TO EYES, RESPIRATORY
    SYSTEM AND SKIN. POSSIBLE RISK OF IRREVERSIBLE EFFECTS.  ACUTE
    EFFECTS: SKIN: CAUSES SKIN IRRITATION. MAY	BE HARMFUL IF ABSORBED
    THROUGH SKIN. EYES: VAPOR OR MIST IRRITATING TO EYES. INHALATION:
    VAPOR OR MIST IS IRRITATING TO THE MUCOUS MEMBRANES & UPPER
    RESPIRATORY TRACT. MAY BE HARMFUL IF INHALED. INGE STION: HARMFUL
    IF SWALLOWED. INGESTION CAN CAUSE SEVERE GASTROENTERITIS THAT MAY
    BE FATAL. MAY CAUSE ARGYRIA (SLATE-GRAY OR BLUISH DISCOLORATION OF
    SKIN AND DEEP TISSUES DUE TO THE DEPOSIT OF INSOLUBL E ALBUMINATE
    OF SILVER). (OVEREXPOSURE)
Effects of Overexposure:HEALTH HAZARDS ACUTE/CHRONIC (CONT'D):
    ABSORPTION INTO BODY LEADS TO THE FORMATION OF METHEMOGLOBIN WHICH
    IN SUFFICIENT CONCENTRATION CAUSES CYANOSIS. ONSET MAY BE DELAYED 2
    TO 4 HOURS OR LONGER. CHRO NIC EFFECTS: TARGET ORGAN(S): EYES,
    NERVES, BLOOD, LUNGS. LABORATORY EXPERIMENTS HAVE SHOWN MUTAGENIC
    EFFECTS.

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

First Aid:INGESTION: IF SWALLOWED, WASH OUT MOUTH WITH WATER PROVIDED
    PERSON IS CONSCIOUS. CALL A PHYSICIAN. INHALATION: REMOVE TO FRESH
    AIR. IF BREATHING BECOMES DIFFICULT, CALL A PHYSICIAN. SKIN: IN
    CASE OF C ONTACT, IMMEDIATELY WASH SKIN WITH SOAP AND COPIOUS
    AMOUNTS OF WATER. EYES: IN CASE OF CONTACT, FLUSH WITH COPIOUS
    AMOUNTS OF WATER FOR AT LEAST 15 MINUTES. ASSURE ADEQUATE FLUSHING
    BY SEPARATING THE  EYELIDS WITH FINGERS. CALL A PHYSICIAN.

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

Extinguishing Media:CARBON DIOXIDE, WATER SPRAY, DRY CHEMICAL POWDER OR
    APPROPRIATE FOAM.
Fire Fighting Procedures:WEAR NIOSH APPROVED SELF-CONTAINED BREATHING
    APPARATUS AND PROTECTIVE CLOTHING TO PREVENT CONTACT WITH SKIN AND
    EYES.
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. ABSORB ON SAND OR
    VERMICULITE AND PLACE IN CLOSED CONTAINERS FOR DISPOSAL. VENTILATE
    AREA AND WASH SPILL S ITE AFTER MATERIAL PICKUP IS COMPLETE.
    EVACUATE AREA.

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

Handling and Storage Precautions:KEEP TIGHTLY CLOSED. STORE IN A COOL,
    DRY PLACE.
Other Precautions:DO NOT BREATHE VAPOR. AVOID CONTACT WITH EYES, SKIN
    AND CLOTHING. AVOID PROLONGED OR REPEATED EXPOSURE. WASH THOROUGHLY
    AFTER HANDLING.

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

Respiratory Protection:A NIOSH-APPROVED RESPIRATOR APPROPRIATE FOR THE
    EXPOSURE OF CONCERN .
Ventilation:MECHANICAL EXHAUST REQUIRED.
Protective Gloves:COMPATIBLE CHEMICAL-RESISTANT GLOVES.
Eye Protection:ANSI APPROVED CHEMICAL SAFETY GOGGLES AND FULL
    FACESHIELD .
Other Protective Equipment:SAFETY SHOWER AND EYE BATH MEETING ANSI
    DESIGN CRITERIA .
Work Hygienic Practices:WASH THOROUGHLY AFTER HANDLING.
Supplemental Safety and Health

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

Vapor Density:5.8 G/L
Spec Gravity:1.015
Appearance and Odor:LIQUID; NO ODOR SPECIFIED BY MANUFACTURER .

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

Stability Indicator/Materials to Avoid:YES
PROTECT FROM LIGHT. ALCOHOLS, AMMONIA, MAGNESIUM, STRONG BASES, STRONG
    REDUCING AGENTS. INCOMPATIBLE WITH: CHLORIDES, CARBONATES,
    THIOCYANATES, FERROUS SALTS, CHLOROSULFONIC ACID, ARSENIC POWDER,
    CHLORIDE TRIFLUORIDE OR PHO
Stability Condition to Avoid:MAY DECOMPOSE ON EXPOSURE TO LIGHT.
Hazardous Decomposition Products:SILVER/SILVER OXIDES. NITROGEN OXIDES.
Conditions to Avoid Polymerization:WILL NOT OCCUR.

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

Ecological:DATA NOT YET AVAILABLE.

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

Waste Disposal Methods:CONTACT A LICENSED PROFESSIONAL WASTE DISPOSAL
    SERVICE TO DISPOSE OF THIS MATERIAL.  OBSERVE ALL FEDERAL, STATE
    AND LOCAL ENVIRONMENTAL REGULATIONS.

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

Transport Information:CONTACT SIGMA CHEMICAL COMPANY FOR TRANSPORTATION
    INFORMATION.

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

Federal Regulatory Information:EUROPEAN INFORMATION: CATALOG # HT101-2.
    NAME: SILVER NITRATE SOLUTION. EC INDEX NO: 047-001-00-2. HARMFUL.
    R22 HARMFUL IF SWALLOWED. R/36/78/38. IRRITATING TO EYES,
    RESPIRATORY SYSTEM AND SKIN. R40 P OSSIBLE RISK OF IRREVERSIBLE
    EFFECTS. S26 IN CASE OF CONTACT WITH EYES, RINSE IMMEDIATELY WITH
    PLENTY OF WATER AND SEEK MEDICAL ADVICE. S36 WEAR SUITABLE
    PROTECTIVE CLOTHING.
State Regulatory Information:N/P. MATERIALS TO AVOID (CONT'D):	IODIDE.
    SOLUTIONS OF SILVER NITRATE WITH AMMONIA, AMMONIA SODIUM CARBONATE,
    OR AMMONIA/SODIUM HYDROXIDE HAVE HAD SEVERAL INSTANCES OF
    EXPLOSIONS REPORTED. REACTION W ITH ACEALDEHYDE, ACETYLENE OR OTHER
    TERMINAL ALKYNES MAY PRODUCE EXPLOSIVE COMPOUNDS. A DRY MIXTURE OF
    POWDERED MAGNESIUM AND SILVER NITRATE HAS BEEN REPORTED TO IGNITE
    EXPLOSIVELY ON CONTACT WITH A D ROP OF WATER. A MIXTURE WITH
    CHARCOAL IGNITES WHEN STRUCK WITH A HAMMER WHILE MIXTURES WITH
    PHOSPHOR US OR SULFUR EXPLODE WHEN STRUCK. PASSAGE OF PHOSPHINE GAS
    INTO A SOLUTION OF SILVER NITRATE RESULTED IN AN EXPLOSION. (OTHER
    INFORMATION)

=======================  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 ***