钨

外观与性状：

金属丝

密度：

19.3

熔点：

3410ºC

沸点：

5660ºC

闪点：

-23ºC

水溶解性：

insoluble

存储条件/存储方法：

库房通风低温干燥,包装密闭

稳定性相关：

化学性质稳定，室温下与空气、水不发生反应，不与酸及溴、碘等反应，但能被钝化。与王水、氢氟酸和硝酸的混合液发生反应。应避免与卤素、强氧化剂接触。

其它信息：

1.      性状：灰黑色金属。硬而脆。

2.      密度（g/mL,20℃）：19.35

3.      相对蒸汽密度（g/mL,空气=1）：未确定

4.      熔点（ºC）：3410±20

5.      沸点（ºC,常压）：5660

6.      沸点（ºC,5.2kPa）：未确定

7.      折射率：未确定

8.      闪点（ºC）：-23

9.      比旋光度（º）：未确定

10.   自燃点或引燃温度（ºC）：未确定

11.   蒸气压（mmHg,25ºC）：未确定

12.   饱和蒸气压（kPa, ºC）：未确定

13.   燃烧热（KJ/mol）：未确定

14.   临界温度（ºC）：未确定

15.   临界压力（KPa）：未确定

16.   油水（辛醇/水）分配系数的对数值：未确定

17.   爆炸上限（%,V/V）：未确定

18.   爆炸下限（%,V/V）：未确定

19.   溶解性：溶于硝酸和氢氟酸的混酸。与氢氧化钠和碳酸钠的混合物熔融。微溶于硝酸、硫酸、王水；不溶于水，氢氟酸、氢氧化钾。溶于硝酸、氢氟酸。

 20.熔化热：3.37×104J/mol

21.气化热：7.369×105J/mol

包装等级：

III

风险类别：

4.1

危险类别码：

R11;R36/38

安全说明：

S6-S26-S36

RTECS号：

YO7175000

危险标志：

F:Flammable;Xi:Irritant;

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)

毒理学数据：

1、皮肤/眼睛刺激性：兔子，皮肤接触，标准Draize实验：500mg?24H，轻度反应；兔子，眼睛接触，标准Draize实验：500mg?24H，轻度反应2、急性毒性：大鼠腹腔LD50： 5mg/kg

生态数据：

通常对水有稍微的危害，不要让未稀释或大量的产品接触地下水，水道或者污水系统。

计算化学数据

1.疏水参数计算参考值（XlogP）:无

2.氢键供体数量:0

3.氢键受体数量:0

4.可旋转化学键数量:0

5.互变异构体数量:无

6.拓扑分子极性表面积0

7.重原子数量:1

8.表面电荷:0

9.复杂度:0

10.同位素原子数量:0

11.确定原子立构中心数量:0

12.不确定原子立构中心数量:0

13.确定化学键立构中心数量:0

14.不确定化学键立构中心数量:0

15.共价键单元数量:1