tantalum
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Names
Chemical & Physical Properties
[ Density]:
16,6 g/cm3
[ Boiling Point ]:
5425 °C(lit.)
[ Melting Point ]:
2996 °C(lit.)
[ Molecular Formula ]:
Ta
[ Molecular Weight ]:
180.94800
[ Exact Mass ]:
180.94800
[ Vapour Pressure ]:
<0.01 mm Hg ( 537.2 °C)
[ Stability ]:
Stable. Powder is very flamable.
MSDS
Toxicological Information
CHEMICAL IDENTIFICATION
- RTECS NUMBER :
- WW5505000
- CHEMICAL NAME :
- Tantalum
- CAS REGISTRY NUMBER :
- 7440-25-7
- LAST UPDATED :
- 199712
- DATA ITEMS CITED :
- 29
- MOLECULAR FORMULA :
- Ta
- MOLECULAR WEIGHT :
- 180.95
- WISWESSER LINE NOTATION :
- TA
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Implant
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 3760 mg/kg
- REFERENCE :
- CNREA8 Cancer Research. (Public Ledger Building, Suit 816, 6th & Chestnut Sts., Philadelphia, PA 19106) V.1- 1941- Volume(issue)/page/year: 16,439,1956 *** REVIEWS *** ACGIH TLV-TWA 5 mg/m3 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 *** MSHA STANDARD-air:TWA 5 mg/m3 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: 3,243,1971 OSHA PEL (Gen Indu):8H TWA 5 mg/m3 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 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 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Fed Cont):8H TWA 5 mg/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-ARAB Republic of Egypt:TWA 0.1 mg/m3 JAN 1993 OEL-AUSTRALIA:TWA 5 mg/m3 JAN 1993 OEL-BELGIUM:TWA 5 mg/m3 JAN 1993 OEL-DENMARK:TWA 5 mg/m3 JAN 1993 OEL-FINLAND:TWA 5 mg/m3 JAN 1993 OEL-FRANCE:TWA 5 mg/m3 JAN 1993 OEL-GERMANY:TWA 5 mg/m3 JAN 1993 OEL-THE NETHERLANDS:TWA 5 mg/m3 JAN 1993 OEL-THE PHILIPPINES:TWA 5 mg/m3 JAN 1993 OEL-RUSSIA:STEL 10 mg/m3 JAN 1993 OEL-SWITZERLAND:TWA 5 mg/m3 JAN 1993 OEL-UNITED KINGDOM:TWA 5 mg/m3;STEL 10 mg/m3 JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO TANTALUM, metal/oxide dust-air:TWA 5 mg/m3;STEL 10 mg/m3 REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 71095 No. of Facilities: 28 (estimated) No. of Industries: 2 No. of Occupations: 5 No. of Employees: 597 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X2923 No. of Facilities: 26 (estimated) No. of Industries: 1 No. of Occupations: 3 No. of Employees: 518 (estimated) No. of Female Employees: 155 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X4238 No. of Facilities: 2 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 35 (estimated) No. of Female Employees: 21 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X5917 No. of Facilities: 3 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 400 (estimated) No. of Female Employees: 400 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 71095 No. of Facilities: 275 (estimated) No. of Industries: 13 No. of Occupations: 13 No. of Employees: 7063 (estimated) No. of Female Employees: 1255 (estimated)
Safety Information
[ Symbol ]:
GHS02, GHS07
[ Signal Word ]:
Warning
[ Hazard Statements ]:
H228-H315-H319-H335
[ Precautionary Statements ]:
P210-P261-P305 + P351 + P338
[ Personal Protective Equipment ]:
Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
[ Hazard Codes ]:
F,Xi,Xn
[ Risk Phrases ]:
11-36/37/38
[ Safety Phrases ]:
S16-S26-S33-S36/37/39-S36
[ RIDADR ]:
UN 3089 4.1/PG 2
[ WGK Germany ]:
-
[ RTECS ]:
WW5505000
[ Packaging Group ]:
II
[ Hazard Class ]:
4.1
Articles
J. Mech. Behav. Biomed. Mater. 18 , 232-9, (2013)
Hydroxyapatite (HAp) films were deposited on a β-type titanium alloy, Ti-29Nb-13Ta-4.6Zr (TNTZ), by metal organic chemical vapor deposition (MOCVD) in order to improve its hard-tissue compatibility. T...
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Here we present a surface based on double-layered nanoparticle stacks suitable for spectro-electrochemical applications. The structure is formed on a continuous gold layer by a two-dimensional periodi...
J. Prosthet. Dent. 109(2) , 95-105, (2013)
Ti-10Ta-10Nb alloy is a promising alloy for metal ceramic crowns because of its good corrosion resistance and low cytotoxicity. However, more information is needed on the bond strength between this al...