Tungsten

Modify Date: 2024-01-02 20:40:25

Tungsten Structure
Tungsten structure
Common Name Tungsten
CAS Number 7440-33-7 Molecular Weight 183.84000
Density 19.3 Boiling Point 5660ºC
Molecular Formula W Melting Point 3410ºC
MSDS Chinese USA Flash Point -23ºC
Symbol GHS02 GHS07
GHS02, GHS07
Signal Word Danger

 Names

Name tungsten atom
Synonym More Synonyms

 Chemical & Physical Properties

Density 19.3
Boiling Point 5660ºC
Melting Point 3410ºC
Molecular Formula W
Molecular Weight 183.84000
Flash Point -23ºC
Exact Mass 183.95100
Stability Stable. Dust is flammable, though not likely to present a hazard if normal good practice is used.
Water Solubility insoluble

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
YO7175000
CHEMICAL NAME :
Tungsten
CAS REGISTRY NUMBER :
7440-33-7
LAST UPDATED :
199710
DATA ITEMS CITED :
21
MOLECULAR FORMULA :
W
MOLECULAR WEIGHT :
183.85
WISWESSER LINE NOTATION :
WO

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
28ZPAK "Sbornik Vysledku Toxixologickeho Vysetreni Latek A Pripravku," Marhold, J.V., Institut Pro Vychovu Vedoucicn Pracovniku Chemickeho Prumyclu Praha, Czechoslovakia, 1972 Volume(issue)/page/year: -,19,1972
TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration into the eye
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
28ZPAK "Sbornik Vysledku Toxixologickeho Vysetreni Latek A Pripravku," Marhold, J.V., Institut Pro Vychovu Vedoucicn Pracovniku Chemickeho Prumyclu Praha, Czechoslovakia, 1972 Volume(issue)/page/year: -,19,1972 ** ACUTE TOXICITY DATA **
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
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 ** REPRODUCTIVE DATA **
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
1210 ug/kg
SEX/DURATION :
female 35 week(s) pre-mating
TOXIC EFFECTS :
Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants) Reproductive - Specific Developmental Abnormalities - musculoskeletal system
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 42(8),30,1977
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
1160 ug/kg
SEX/DURATION :
female 30 week(s) pre-mating female 1-20 day(s) after conception
REFERENCE :
FATOAO Farmakologiya i Toksikologiya (Moscow). For English translation, see PHTXA6 and RPTOAN. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.2- 1939- Volume(issue)/page/year: 41,620,1978 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD-air:TWA 1 mg/m3 (soluble) 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: 3,272,1971 MSHA STANDARD:air-TWA 5 mg/m3 (insoluble) 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: 3,272,1971 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-DENMARK:TWA 5 mg/m3 JAN 1993 OEL-RUSSIA:STEL 2 mg/m3 JAN 1993 OEL-SWEDEN:TWA 5 mg/m3 JAN 1993 OEL-UNITED KINGDOM:TWA 5 mg/m3;STEL 10 mg/m3 JAN 1993 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO TUNGSTEN, insoluble-air:TWA 5 mg(W)/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 RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO TUNGSTEN, soluble-air:10H TWA 1 mg(W)/m3;STEL 3 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 - 74980 No. of Facilities: 530 (estimated) No. of Industries: 20 No. of Occupations: 24 No. of Employees: 4735 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X5928 No. of Facilities: 53 (estimated) No. of Industries: 4 No. of Occupations: 11 No. of Employees: 3907 (estimated) No. of Female Employees: 1258 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X7685 No. of Facilities: 174 (estimated) No. of Industries: 5 No. of Occupations: 15 No. of Employees: 4822 (estimated) No. of Female Employees: 3021 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 74980 No. of Facilities: 1623 (estimated) No. of Industries: 52 No. of Occupations: 43 No. of Employees: 38323 (estimated) No. of Female Employees: 3591 (estimated)

 Safety Information

Symbol GHS02 GHS07
GHS02, GHS07
Signal Word Danger
Hazard Statements H228-H315-H319
Precautionary Statements P210-P305 + P351 + P338
Personal Protective Equipment dust mask type N95 (US);Eyeshields;full-face particle respirator type N100 (US);Gloves;respirator cartridge type N100 (US);type P1 (EN143) respirator filter;type P3 (EN 143) respirator cartridges
Hazard Codes F:Flammable;Xi:Irritant;
Risk Phrases R11;R36/38
Safety Phrases S6-S26-S36
RIDADR UN 3089
WGK Germany -
RTECS YO7175000
Packaging Group III
Hazard Class 4.1

 Synthetic Route

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 Synonyms

EINECS 231-143-9
MFCD00011461
Tungsten granular
Tungsten ICPStd.
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