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Tungstic acid

Physical Properties Uses Preparation
Tungstic acid
Tungstic acid structure
CAS No.
7783-03-1
Chemical Name:
Tungstic acid
Synonyms
O2W(OH)2;Tunstic acid;TUNGSTIC ACID;Wolframic acid;TungsticAcidGr;TUNGSTIC(VI) ACID;Tungstic acid 99%;Orthotungstic acid;TUNGSTIC ACID 99+%;TUNGSTIC ACID PURE
CBNumber:
CB2155821
Molecular Formula:
H2O4W
Formula Weight:
249.85
MOL File:
7783-03-1.mol

Tungstic acid Properties

Melting point:
100°C (dec.)
Boiling point:
1473°C
Density 
5.5 g/mL at 25 °C(lit.)
refractive index 
2.24
Flash point:
1473°C
form 
powder
color 
Yellow to yellow-greenish
Specific Gravity
5.5
Water Solubility 
insoluble
Merck 
14,9818
Stability:
Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference
7783-03-1(CAS DataBase Reference)
NIST Chemistry Reference
Tungstic acid(7783-03-1)
EPA Substance Registry System
Tungstate (WO42-), dihydrogen, (T-4)-(7783-03-1)
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS07
Hazard statements  H315-H319-H335
Precautionary statements  P261-P280a-P304+P340-P305+P351+P338-P405-P501a
Risk Statements  36/37/38
Safety Statements  24/25
WGK Germany  3
RTECS  YO7840000
TSCA  Yes
HS Code  28259011

Tungstic acid price More Price(9)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 223328 Tungstic acid 99% 7783-03-1 100g $69 2018-11-13 Buy
Sigma-Aldrich 223328 Tungstic acid 99% 7783-03-1 500g $250 2018-11-13 Buy
Alfa Aesar 082118 Tungstic(VI) acid 7783-03-1 100g $74.2 2018-11-20 Buy
Alfa Aesar 082118 Tungstic(VI) acid 7783-03-1 25g $24.8 2018-11-20 Buy
Strem Chemicals 93-7410 Tungstic acid, 99% 7783-03-1 50g $35 2018-11-13 Buy

Tungstic acid Chemical Properties,Uses,Production

Physical Properties

Yellow amorphous powder; density 5.59 g/cm3; decomposes at 100°C; insoluble in water and most acids; soluble in hydrofluoric acid, caustic alkalies and ammonia solution. Freshly prepared tungstic acid containing a molecule of water of crystallization is moderately soluble in water.

Uses

Tungstic acid is used in preparing tungsten metal and many tungsten compounds. Also, it is a mordant for textiles.

Preparation

Tungstic acid is obtained as an intermediate in the recovery of tungsten from its minerals, scheelite and wolframite (See Tungsten). Also, the tungstic acid may be prepared by heating sodium tungstate with sulfuric acid or hydrochloric acid:
Na2WO4 + 2HCl → H2WO4 + 2NaCl
Na2WO4 + H2SO4 → H2WO4 + Na2SO4

Chemical Properties

light yellow powder

Tungstic acid Preparation Products And Raw materials

Raw materials

Preparation Products


Tungstic acid Suppliers

Global( 138)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32447 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 info@tnjchem.com China 1861 55
Chemwill Asia Co.,Ltd.
86-21-51086038
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Hubei Jusheng Technology Co.,Ltd.
86-18871470254
027-59599243 sales@jushengtech.com CHINA 28236 58
Haihang Industry Co.,Ltd
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+86 531 8582 1093 export@haihangchem.com CHINA 8921 58
Xiamen AmoyChem Co., Ltd
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Hubei xin bonus chemical co. LTD
86-13657291602
027-59338440 sales@guangaobio.com CHINA 23049 58
Shanghai Boyle Chemical Co., Ltd. Mr Qiu:021-50182298(Demestic market) Miss Xu:021-50180596(Abroad market)
+86-21-57758967 sales@boylechem.com China 2214 55
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
86-10-82849933 jkinfo@jkchemical.com;market6@jkchemical.com China 96506 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) sh@meryer.com China 40269 62

Tungstic acid Spectrum


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