*** CHEMICAL IDENTIFICATION ***
RTECS NUMBER : WW5855000
CHEMICAL NAME : Tantalum oxide
CAS REGISTRY NUMBER : 1314-61-0
LAST UPDATED : 199712
DATA ITEMS CITED : 12
MOLECULAR FORMULA : O5-Ta2
MOLECULAR WEIGHT : 441.90
WISWESSER LINE NOTATION : TA2 O5
SYNONYMS/TRADE NAMES :
* Tantalic acid anhydride
* Tantalum oxide
* Tantalum penta oxide
* Tantalum pentoxide
*** HEALTH HAZARD DATA ***
** ACUTE TOXICITY DATA **
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 8 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
EQSSDX Environmental Quality and Safety, Supplement. (Stuttgart, Fed. Rep.
Ger.) V.1-5, 1975-76. Discontinued. Volume(issue)/page/year: 1,1,1975
TYPE OF TEST : LD - Lethal dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : >5 gm/kg
TOXIC EFFECTS :
Vascular - regional or general arteriolar or venous dilation
Liver - other changes
Blood - other changes
REFERENCE :
INMEAF Industrial Medicine. (Chicago, IL) V.1-18, 1932-49. For publisher
information, see IOHSA5. Volume(issue)/page/year: 15,482,1946
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : >4 gm/kg
TOXIC EFFECTS :
Behavioral - muscle contraction or spasticity
Lungs, Thorax, or Respiration - acute pulmonary edema
Liver - hepatitis (hepatocellular necrosis), diffuse
REFERENCE :
HYSAAV Hygiene and Sanitation (USSR). English translation of GISAAA.
(Springfield, VA) 1964-71. Discontinued. Volume(issue)/page/year:
32(10-12),343,1967
*** REVIEWS ***
ACGIH TLV-TWA 5 mg(Ta)/m3, dust
DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices
(BEIs) booklet issues by American Conference of Governmental Industrial
Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year:
TLV/BEI,1997
ACGIH TLV-TWA 5mg(Ta)/m3, dust
DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices
(BEIs) booklet issues by American Conference of Governmental Industrial
Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year:
TLV/BEI,1997
*** U.S. STANDARDS AND REGULATIONS ***
OSHA PEL (Gen Indu):8H TWA 5 mg/m3, dust
CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt.
of Documents, Washington, DC 20402) Volume(issue)/page/year:
29,1910.1000,1994
OSHA PEL (Construc):8H TWA 5 mg/m3, dust
CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt.
of Documents, Washington, DC 20402) Volume(issue)/page/year:
29,1926.55,1994
OSHA PEL (Shipyard):8H TWA 5 mg/m3, dust
CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt.
of Documents, Washington, DC 20402) Volume(issue)/page/year:
29,1915.1000,1993
*** OCCUPATIONAL EXPOSURE LIMITS ***
OEL-DENMARK:TWA 5 mg/m3 JAN 1993
OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV
*** STATUS IN U.S. ***
EPA TSCA Section 8(b) CHEMICAL INVENTORY
*** END OF RECORD ***
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