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

MSDS NAME:TUNGSTIC ACID
Status Code:A
MSDS Number: CKQHN
=== Responsible Party ===
Company:MALLINCKRODT, INC., SCIENCE PRODUCTS DIVISION
Box:M
City:PARIS
State:KY
ZIP:43061
Country:US
Info Phone Num:314- 982-5000
Emergency Phone Num:(314) 982-5000
Resp. Party Other MSDS Num.:STICA
CAGE:TO713
=== Contractor Identification ===
Company:MALLINCKRODT, INC., SCIENCE PRODUCTS DIVISION
Box:M
City:PARIS
State:KY
ZIP:43061
Country:US
Phone:314-982-5000
CAGE:TO713

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

Name:TUNGSTIC ACID.  (SYNONYMS: ORTHOTUNGSTIC ACID, WOLFRAMIC
    ACID. CHEMICAL FORMULA: H2WO4. MOLECULAR WEIGHT: 249.86)
CAS:11105-11-6
RTECS #:YO7840000
ACGIH TLV:5MG(W)/M3
ACGIH STEL:10MG(W)/M3

=====================  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:WARNING: MAY BE HARMFUL IF SWALLOWED
    OR INHALED. CAUSES EYE IRRITATION. CHRONIC INHALATION HAZARD. 
    INHALATION: MAY CAUSE IRRITATION TO THE RESPIRATORY TRACT. HIGHER
    CONCENTRATIONS OR PROLONGED INHALA TION MAY CAUSE PULMONARY
    FIBROSIS.  INGESTION: MAY CAUSE GASTROINTESTINAL DISTURBANCES INCL
    DIARRHEA. DEATH MAY OCCUR FROM RESPIRATORY ARREST.	SKIN CONTACT:
    MAY CAUSE IRRITATION.  EYE CONTACT: MAY CA USE SEVERE IRRITATION,
    REDNESS, AND PAIN.	CHRONIC EXPOSURE: PROLONGED OR REPEATED
    INHALATION OF TUNGSTEN SALTS MAY CAUSE PULMONARY FIBROSIS.
    PROLONGED OR REPEATED SKIN EXPOSURE OF TUNGSTEN SALTS MAY  CAUSE
    DERMATITIS & OTHER SKIN DISORDERS.
Effects of Overexposure:SEE HEALTH HAZARDS .
Medical Cond Aggravated by Exposure:NO INFORMATION FOUND.

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

First Aid:INHALATION: REMOVE TO FRESH AIR. GET MEDICAL ATTENTION FOR
    ANY BREATHING DIFFICULTY.  INGESTION: IF SWALLOWED, GIVE WATER OR
    MILK TO DRINK. GET MEDICAL ATTENTION IMMEDIATELY. NEVER GIVE
    ANYTHING BY MO UTH TO AN UNCONSCIOUS PERSON.  SKIN EXPOSURE: REMOVE
    ANY CONTAMINATED CLOTHING. WASH SKIN WITH PLENTY OF WATER FOR AT
    LEAST 15 MINUTES. IF IRRITATION DEVELOPS, GET MEDICAL ATTENTION. 
    EYE EXPOSURE: WA SH EYES WITH PLENTY OF WATER FOR AT LEAST 15
    MINUTES, LIFTING LOWER AND UPPER EYELIDS OCCASIONALLY.  GET MEDICAL
    ATTENTION IMMEDIATELY.

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

Extinguishing Media:USE ANY MEANS SUITABLE FOR EXTINGUISHING
    SURROUNDING FIRE.
Fire Fighting Procedures:SPECIAL INFORMATION: IN THE EVENT OF A FIRE,
    WEAR FULL PROTECTIVE CLOTHING AND NIOSH-APPROVED SELF-CONTAINED
    BREATHING APPARATUS WITH FULL FACEPIECE OPERATED IN THE PRESSURE
    DEMAND OR OTHER POSITIVE P RESSURE MODE.
Unusual Fire/Explosion Hazard:FIRE: NOT CONSIDERED TO BE A FIRE HAZARD.
     EXPLOSION: NOT CONSIDERED TO BE AN EXPLOSION HAZARD.

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

Spill Release Procedures:VENTILATE AREA OF LEAK OR SPILL. CLEAN-UP
    PERSONNEL MAY REQUIRE RESPIRATORY PROTECTION FROM DUST.  SPILLS:
    SWEEP UP AND CONTAINERIZE FOR RECLAMATION OR DISPOSAL. VACUUMING OR
    WET SWEEPING MAY BE USED  TO AVOID DUST DISPERSAL.

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

Handling and Storage Precautions:STORAGE: KEEP IN A TIGHTLY SEALED
    CONTAINER, STORED IN A COOL,  DRY,	VENTILATED AREA. HANDLING:
    PROTECT AGAINST PHYSICAL DAMAGE.
Other Precautions:AVOID CONTACT WITH EYES.  WASH THOROUGHLY AFTER
    HANDLING.  AVOID BREATHING DUST.  KEEP CONTAINER CLOSED.  USE WITH
    ADEQUATE VENTILATION.

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

Respiratory Protection:IF THE TLV IS EXCEEDED, A (NIOSH APPROVED) DUST
    / MIST RESPIRATOR WITH CHEMICAL GOGGLES MAY BE WORN, IN GENERAL, UP
    TO TEN TIMES THE TLV. CONSULT RESPIRATOR SUPPLIER FOR LIMITATIONS.
    ALTERNATIVELY, A  SUPPLIED AIR FULL FACEPIECE RESPIRATOR OR
    AIRLINED HOOD MAY BE WORN.
Ventilation:A SYSTEM OF LOCAL AND/OR GENERAL EXHAUST IS RECOMMENDED TO
    KEEP EMPLOYEE EXPOSURES BELOW THE AIRBORNE EXPOSURE LIMITS. LOCAL
    EXHAUST VENTILATION (OTHER INFO)
Protective Gloves:WEAR PROTECTIVE GLOVES.
Eye Protection:USE CHEMICAL SAFETY GOGGLES. CONTACT LENSES SHOULD NOT
    (SUPP SAFETY & HEALTH)
Other Protective Equipment:WEAR CLEAN BODY-COVERING CLOTHING.  MAINTAIN
    EYE WASH FOUNTAIN AND QUICH-DRENCH FACILITIES IN WORK AREA.
Supplemental Safety and Health
EYE PROTECTION (CONT): BE WORN WHEN WORKING WITH THIS MATERIAL.

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

Boiling Pt:=1473.C, 2683.4F
Melt/Freeze Pt:M.P/F.P Text:LOSES WATER @ 100C.
Vapor Pres:NO INFO FOUND.
Vapor Density:NO INFO.
Spec Gravity:5.5
Evaporation Rate & Reference:NO INFO FOUND.
Solubility in Water:INSOLUBLE
Appearance and Odor:YELLOW POWDER, SLIGHT SULFUR-LIKE ODOR.

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

Stability Indicator/Materials to Avoid:YES
NO INCOMPATIBILITY DATA FOUND.
Stability Condition to Avoid:STABLE UNDER NORMAL CONDITIONS OF USE AND
    STORAGE.
Hazardous Decomposition Products:TUNGSTEN OXIDE FUMES.

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

Toxicological Information:NO LD50/LC50 INFORMATION FOUND RELATING TO
    NORMAL ROUTES OF OCCUPATIONAL EXPOSURE.  IRRITATION DATA: EYE
    RABBIT 500MG/24H SEVERE.  AIRBORNE EXPOSURE LIMITS: ACGIH THRESHOLD
    LIMIT VALUE (TLV): 5 MG(W)/ M3 (TWA).  10 MG(W)/M3 (STEL) FOR
    INSOLUABLE COMPOUNDS.

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

Waste Disposal Methods:DISPOSAL: WHATEVER CANNOT BE SAVED FOR
    RECLAMATION MAY BE DELIVERED TO AN APPROVED WASTE DISPOSAL
    FACILITY.  ENSURE COMPLIANCE WITH LOCAL, STATE AND FEDERAL
    REGULATIONS.

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

Transport Information:DOT HAZARD CLASS: NOT REGULATED.

 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 ***