三氧化钨

三氧化钨用途

【用途一】
用作分析试剂，也用于金属钨、钨盐的制备
【用途二】
用于制金属钨、合金钢、防火织物等，并用于陶瓷工业
【用途三】
用做制金属钨的原料。用于制硬质合金、拉钨丝，粉末冶金，制x-射线屏和防火织物。亦可用做陶瓷器的着色剂和分析试剂等。
【用途四】
可用作制金属钨的原料，制造硬质合金、刀具、模具和拉钨丝，也可用于粉末冶金，还可用于X射线屏及防火织物，以及用作陶瓷器的着色剂和分析试剂等。蓝色氧化钨用作生产钨粉，掺杂钨粉，钨条、钨杆、....和硬质合金等。黄色氧化钨用于电渡和生产其它钴产品、气压计、比重计

三氧化钨名称

[ CAS 号 ]:
1314-35-8

[ 中文名 ]:
三氧化钨

[ 英文名 ]:
Tungsten trioxide

[中文别名 ]:

[英文别名 ]:

D-Glucose,3-methanesulfonate
3-O-Mesyl-D-glucose
Tungsten Trioxide
EINECS 215-231-4
O3-Mesyl-D-glucose
Tungstic anhydride
O3W,tetragonal
MFCD00011466
Tungsten(VI) oxide

三氧化钨物理化学性质

[ 密度 ]:
7.16 g/mL at 25 °C(lit.)

[ 沸点 ]:
~1700ºC

[ 熔点 ]:
1470-1475 °C

[ 分子式 ]:
O₃W

[ 分子量 ]:
231.83800

[ 精确质量 ]:
231.93600

[ PSA ]:
51.21000

[ 外观性状 ]:
黄色粉末

[ 储存条件 ]:
室温

[ 水溶解性 ]:
insoluble

三氧化钨MSDS

详细MSDS(安全技术说明书)

三氧化钨毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: YO7760000

CHEMICAL NAME :: Tungsten oxide

CAS REGISTRY NUMBER :: 1314-35-8

LAST UPDATED :: 199712

DATA ITEMS CITED :: 19

MOLECULAR FORMULA :: O3-W

MOLECULAR WEIGHT :: 231.85

WISWESSER LINE NOTATION :: .WO..O3

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 :: 1059 mg/kg

TOXIC EFFECTS :: Behavioral - somnolence (general depressed activity) Behavioral - excitement Behavioral - muscle weakness

REFERENCE :: HYSAAV Hygiene and Sanitation (USSR). English translation of GISAAA. (Springfield, VA) 1964-71. Discontinued. Volume(issue)/page/year: 31(7-9),197,1966

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Unreported

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 2 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 48(7),71,1983 ** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST :: TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 490 ug/m3/24H/15W-C

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 48(7),71,1983 *** REVIEWS *** ACGIH TLV-TWA 5 mg(W)/m3; STEL 10 mg(W)/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(W)/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: 3,272,1971 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 5 mg(W)/m3;STEL 10 mg(W)/m3 JAN 1993 OEL-BELGIUM:TWA 5 mg(W)/m3;STEL 10 mg(W)/m3 JAN 1993 OEL-DENMARK:TWA 5 mg(W)/m3 JAN 1993 OEL-FINLAND:TWA 5 mg(W)/m3 JAN 1993 OEL-THE NETHERLANDS:TWA 5 mg(W)/m3 JAN 1993 OEL-THE PHILIPPINES:TWA 1 mg(W)/m3 JAN 1993 OEL-SWEDEN:TWA 5 mg(W)/m3 JAN 1993 OEL-SWITZERLAND:TWA 5 mg(W)/m3 JAN 1993 OEL-UNITED KINGDOM:TWA 5 mg(W)/m3;STEL 10 mg(W)/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 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 OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 84213 No. of Facilities: 21 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 21 (estimated)

三氧化钨安全信息

[ 个人防护装备 ]:
dust mask type N95 (US);Eyeshields;Gloves

[ 危害码 (欧洲) ]:
Xn:Harmful;

[ 风险声明 (欧洲) ]:
R22;R36/37/38

[ 安全声明 (欧洲) ]:
S26-S36-S37/39

[ 危险品运输编码 ]:
NONH for all modes of transport

[ WGK德国 ]:
-

[ RTECS号 ]:
YO7760000

[ 海关编码 ]:
2825901200

三氧化钨制备

1.钨酸铵法钨精矿经氢氧化钠碱解，用盐酸中和，再与氯化铵作用，生成钨酸铵，再加人盐酸进行酸解反应，生成钨酸，然后经过焙烧分解、粉碎，得到三氧化钨。其

2.钨酸盐的盐酸分解法。将钨酸钠Na2WO4、钨酸钙CaWO4等钨酸盐的饱和水溶液加热，按摩尔比将溶液慢慢地滴加到2～3倍过量的沸腾浓盐酸中。按上述反应沉淀出黄色钨酸。这时如果滴加速度过快或液温下降，则容易生成悬浮状或胶体状沉淀，给下一步的处理带来困难。滴加后在水浴上连续加热1h，沉淀变得易于过滤。静置后用5%硝酸铵水溶液洗涤几次，将Cl-完全除去。过滤后在120℃下干燥，最后升温到600℃钨酸则完全脱水变成三氧化钨。

3.仲钨酸铵的热分解法。将用重结晶法提纯的仲钨酸铵（NH4）10W12O41·11H2O装入瓷坩埚中，加热到约400℃以上时，氨挥发出去则得三氧化钨。

三氧化钨海关

[ 海关编码 ]: 2825901200

三氧化钨文献

Mesoporous carbon nitride-tungsten oxide composites for enhanced photocatalytic hydrogen evolution.

ChemSusChem , doi:10.1002/cssc.201403278, (2015)

Composites of mesoporous polymeric carbon nitride and tungsten(VI) oxide show very high photocatalytic activity for the evolution of hydrogen from water under visible light and in the presence of sacr...

Liao; C.C.; et. al.

Solar Energy Mat. and Solar Cells 7+8th ed., 90 , 1147-1155, (2006)

Polleux; J.; et. al.

Angew. Chem. Int. Ed. Engl. 2nd ed., 45 , 261-265, (2006)

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