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Tungsten Compounds Toxicology
-In ferrous and nonferrous
-filaments in incandescent lamps,
-manufacture of abrasives and
-manufacture of textiles and
CAS Number : 1314-35-8
Molecular Formula : WO3
I-Main Synonyms :
French Names :
Trioxyde de tungstene,
Trioxyde de tungstène.
English Names :
II-Uses and Sources of Emission
Manufacture of inorganic
Hygiene and safety
Physical State : Solid
Odor : Odorless
:1473 deg C
Solubility : Insoluble in water
This product is non flammable.
Chemical Stability :
Stable under normal temperatures and
Conditions to Avoid :
Incompatible materials, dust generation.
Incompatibilities with Other
Chlorine, Chlorine trifluoride, Lithium.
Hazardous Decomposition Products
Hazardous Polymerization :
Has not been reported.
Wash thoroughly after handling. Use only
in a well-ventilated area. Minimize dust generation and
Keep container tightly closed.
Store in a cool, dry, well-ventilated
area away from incompatible substances.
Keep containers tightly closed.
IV-Accidental Release Measures
General Information :
Use proper personal protective
Clean up spills immediately, wearing
appropriate protective equipment. Sweep up, then place into a
suitable container for disposal. Avoid generating dusty
V-Waste Disposal :
Dispose according to local and state
Oral, rat : LD50 = 1059 mg/kg.
II-Acute Effects :
May cause eye irritation.
May cause skin irritation.
May cause gastrointestinal irritation
with nausea, vomiting and diarrhea.
May be harmful if swallowed.
May cause respiratory tract
III-Chronic Effects :
Prolonged or repeated skin contact may
May cause lung damage.
IV-Effects on development :
No data concerning antenatal development
was found in the consulted documentary sources.
V-Effects on reproduction :
No data concerning reproduction was
found in the consulted documentary sources.
VI-Effects on breast milk :
There is no data concerning its
excretion or detection in milk.
No information found.
Not listed by ACGIH, IARC, NTP.
First Aid Measures
Flush eyes with plenty of water for at
least 15 minutes, occasionally lifting the upper and lower
eyelids. Get medical aid.
Get medical aid. Flush skin with plenty
of water for at least 15 minutes while removing contaminated
clothing and shoes. Wash clothing before reuse.
Never give anything by mouth to an
unconscious person. Get medical aid immediately. Do NOT induce
vomiting. If conscious and alert, rinse mouth and drink 2-4
cupfuls of milk or water.
Remove from exposure and move to fresh
air immediately. If not breathing, give artificial respiration. If
breathing is difficult, give oxygen. Get medical aid.
V-Notes to Physician
Personal Protection :
Use adequate general or local exhaust
ventilation to keep airborne concentrations below the permissible
II-Personal Protective Equipment
Wear appropriate protective eyeglasses
or chemical safety goggles.
Wear appropriate gloves to prevent skin
Wear appropriate protective clothing to
minimize contact with skin.
Wear an approved full-facepiece airline
respirator in the positive pressure mode with emergency escape
Fire Fighting Measures
I-General Information :
As in any fire, wear a self-contained
breathing apparatus in pressure-demand, and full protective gear.
II-Extinguishing Media :
Use water fog, dry chemical, carbon
dioxide, or regular foam.
No data available. No information
No information found.
No information found.
No information available.
Quebec's Exposure Limits
Valeur d'Exposition Moyenne
Pondérée (VEMP) : 5 mg/m³ expressed as W.
1-Occupational Medicine,Carl Zenz,
2-Clinical Environmental Health and
Toxic Exposures, Sullivan & Krieger; last edition.
3-Sax's Dangerous Properties of
Industrial Materials, Lewis C., last edition.
4-Toxicologie Industrielle et
Intoxications Professionnelles, Lauwerys R. last
5-Chemical Hazards of the Workplace,
Proctor & Hughes, 4th edition.
7- Fischer Scientific, MSDS,
Out Bound Links
Edouard Bastarache M.D.
Occupational & Environmental Medicine
Author of "Substitutions for Raw Ceramic Materials"
Tracy, QuÃ©bec, CANADA