钨酸钠二水合物

钨酸钠二水合物用途

1.主要用于金属钨、钨酸及钨酸盐的制造以及染料、颜料、油墨、电镀等阀门。也可用于织物和纤维素的防火剂，催化剂等。检验血清蛋白、无蛋白血清滤液。生物碱沉淀剂。制造金属钨、钨酸盐和钨氧化物。织物的防水和防火。钨酸钠属阳极钝化膜型缓蚀剂，其缓蚀性能优于钼系及磷系。对碳素钢、紫铜、铜合金、铝、锌均有较好的缓蚀效果。单一钨酸钠为缓蚀剂时加药量较大，约需WO2-4200mg/L以上，费用高。

2.用于金属钨、钨酸及钨酸盐类的制造。用做媒染剂、颜料和催化剂。还可做织物防火剂以及分析化学试剂。缓蚀剂。

3.用作分析试剂、生物碱沉淀剂、织物防水防火剂。用于制备金属钨及其他钨化合物。

4.本品用作织物助剂，由钨酸钠、硫酸铵磷酸铵等组成的混合物用于纤维的防火和防水。此种纤维可制作防火人造丝和人造棉。亦可用于织物加重，皮革鞣制，电镀镀层防腐。本品作助溶剂引入瓷釉色料能起降低烧成温度和补色作用。

钨酸钠二水合物作用

【用途一】
用于制造金属钨、钨酸、钨酸盐、染料、油墨、催化剂等
【用途二】
用于金属钨、钨酸及钨酸盐类的制造。用做媒染剂、颜料和催化剂。还可做织物防火剂以及分析化学试剂。
【用途三】
本品用作织物助剂，由钨酸钠、硫酸铵磷酸铵等组成的混合物用于纤维的防火和防水。此种纤维可制作防火人造丝和人造棉。亦可用于织物加重，皮革鞣制，电镀镀层防腐。本品作助溶剂引入瓷釉色料能起降低烧成温度和补色作用。

钨酸钠二水合物名称

[ CAS 号 ]:
10213-10-2

[ 中文名 ]:
钨酸钠二水合物

[ 英文名 ]:
Sodium tungstate dihydrate

[中文别名 ]:

[英文别名 ]:

Sodium tungstate dihydrate
disodium,dioxido(dioxo)tungsten,dihydrate
Sodium tungstatedihydrate
MFCD00149190
Sodiumtungstatedihydrate
EINECS 236-743-4
Sodium dioxido(dioxo)tungsten hydrate (2:1:2)

钨酸钠二水合物物理化学性质

[ 密度 ]:
4.18

[ 熔点 ]:
698 °C(lit.)

[ 分子式 ]:
H₄Na₂O₆W

[ 分子量 ]:
329.848

[ 精确质量 ]:
329.931213

[ PSA ]:
98.72000

[ 外观性状 ]:
白色斜方晶系的晶体

[ 储存条件 ]:
室温

[ 水溶解性 ]:
730 g/L (20 ºC)

钨酸钠二水合物MSDS

详细MSDS(安全技术说明书)

钨酸钠二水合物毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: YO7900000

CHEMICAL NAME :: Tungstic acid, sodium salt, dihydrate

CAS REGISTRY NUMBER :: 10213-10-2

LAST UPDATED :: 199712

DATA ITEMS CITED :: 21

MOLECULAR FORMULA :: O4-W.2Na.2H2-O

MOLECULAR WEIGHT :: 329.87

WISWESSER LINE NOTATION :: .NA2.W-O4 QH2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 204 mg/kg

TOXIC EFFECTS :: Behavioral - somnolence (general depressed activity) Behavioral - coma

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

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 251 mg/kg

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

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 145 mg/kg

TOXIC EFFECTS :: Behavioral - somnolence (general depressed activity) Behavioral - coma

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Intravenous

DOSE :: 330 gm/kg

SEX/DURATION :: female 8 day(s) after conception

TOXIC EFFECTS :: Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants)

MUTATION DATA

TYPE OF TEST :: Cytogenetic analysis

TEST SYSTEM :: Human Lymphocyte

REFERENCE :: CYGEDX Cytology and Genetics (English Translation). Translation of TGANAK. (Allerton Press Inc., 150 Fifth Ave., New York, NY 10011) V.8- 1974- Volume(issue)/page/year: 12(3),46,1978 *** 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, 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 : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X2632 No. of Facilities: 186 (estimated) No. of Industries: 2 No. of Occupations: 4 No. of Employees: 2254 (estimated) No. of Female Employees: 1653 (estimated)

钨酸钠二水合物安全信息

[ 符号 ]:

GHS07

[ 信号词 ]:
Warning

[ 危害声明 ]:
H302

[ 警示性声明 ]:
P301 + P312 + P330

[ 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;R36/38

[ 安全声明 (欧洲) ]:
S36-S37/39-S26

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

[ WGK德国 ]:
1

[ RTECS号 ]:
YO7900000

[ 海关编码 ]:
28418000

钨酸钠二水合物上下游产品

钨酸钠二水合物上游产品

钨酸钠二水合物下游产品

钨酸钠二水合物制备

1.钨矿石碱解法将黑钨矿粉碎至320目，与30％烧碱加人反应器中进行碱解，碱解后与氯化钙作用合成钨酸钙，钨酸钙与盐酸反应生成钨酸，再与烧碱反应生成钨酸钠，经蒸发结晶、离心脱水、干燥，即得钨酸钠成品。

2.工业上，是将原料矿物黑钨矿等用氢氧化钠水溶液萃取，制成粗钨酸钠，再将粗制品用酸制成WO3·2H2O，然后再次用氢氧化钠制成Na2WO4·2H2O。

精制法可用水进行再结晶。如需更纯的产品时，则将水溶液加入热的浓盐酸中，使之析出一水合氧化钨WO3·H2O沉淀。反复洗涤沉淀，然后溶于氢氧化钠水溶液中，并使之析出结晶。在6℃以下可得十水合物，而在6℃以上则得二水合物。

3.将过量的钨酸加到20%的氢氧化钠溶液中，不断搅拌下加热4h，然后保温30～40℃，并不断搅拌：

待反应完全后，过滤，滤液加热浓缩至出现结晶，用冰冷却，离心脱水，干燥，即得试剂钨酸钠。
母液蒸发可回收纯度较低的钨酸钠试剂。

4.钨精矿苏打溶液压煮法　将白钨矿磨碎加水制浆，打入压煮器内再加入比理论量过量1.5倍的苏打，装料完毕在搅拌下加热至200～225℃，分解4h 。将浸出物过滤，滤液打入净化器经除杂处理后，打入蒸发器浓缩。冷却结晶得产品。反应式如下：

钨酸钠二水合物海关

[ 海关编码 ]: 28418000

钨酸钠二水合物文献

Mechanism of scrapie prion precipitation with phosphotungstate anions.

ACS Chem. Biol. 10 , 1269-77, (2015)

The phosphotungstate anion (PTA) is widely used to facilitate the precipitation of disease-causing prion protein (PrP(Sc)) from infected tissue for applications in structural studies and diagnostic ap...

Extremely durable biofouling-resistant metallic surfaces based on electrodeposited nanoporous tungstite films on steel.

Nat. Commun. 6 , 8649, (2015)

Formation of unwanted deposits on steels during their interaction with liquids is an inherent problem that often leads to corrosion, biofouling and results in reduction in durability and function. Her...

Tungsten-enhanced growth of Methanosphaera stadtmanae.

BMC Res. Notes 5 , 238, (2012)

The methanogenic Archaea Methanosphaera stadtmanae has been detected in the human gut microbiota by both culture and culture-independent methods. Its growth reaches an exponential phase after 5 to 7-d...

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