Tungstic acid
- CAS No.
- 7783-03-1
- Chemical Name:
- Tungstic acid
- Synonyms
- O2W(OH)2;ungsticaci;Tunstic acid;TUNGSTIC ACID;Wolframic acid;TungsticAcidGr;TUNGSTIC(VI) ACID;Tungstic acid 99%;Orthotungstic acid;TUNGSTIC ACID 99+%
- CBNumber:
- CB2155821
- Molecular Formula:
- HO4W-
- Molecular Weight:
- 248.84
- MDL Number:
- MFCD00011336
- MOL File:
- 7783-03-1.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Product description | Number | Pack Size | Price |
| Tungstic acid 99% | 223328 | 100g | $103 |
| Tungstic acid 99% | 223328 | 500g | $376 |
| Tungstic acid, 99% 99% | 93-7410 | 50g | $47 |
| Tungstic acid, 99% 99% | 93-7410 | 250g | $172 |
| Tungstic acid, 99% | 93-7410 | 50g | $44 |
| More product size | |||
| 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 |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | insoluble in H2O, acid solutions; soluble in alkaline solutions |
| form | powder |
| color | Yellow to yellow-greenish |
| Specific Gravity | 5.5 |
| Water Solubility | insoluble |
| Merck | 14,9818 |
| Exposure limits |
ACGIH: TWA 3 mg/m3 NIOSH: TWA 5 mg/m3; STEL 10 mg/m3 |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| InChI | 1S/2H2O.2O.W/h2*1H2;;;/q;;;;+2/p-2 |
| InChIKey | CMPGARWFYBADJI-UHFFFAOYSA-L |
| SMILES | O[W](O)(=O)=O |
| CAS DataBase Reference | 7783-03-1(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | J4D6K0RX2G |
| NIST Chemistry Reference | Tungstic acid(7783-03-1) |
| EPA Substance Registry System | Tungstate (WO42-), dihydrogen, (T-4)- (7783-03-1) |
| UNSPSC Code | 12352300 |
| NACRES | NA.23 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P261-P264-P271-P280-P302+P352-P305+P351+P338 | |||||||||
| target organs | Respiratory system | |||||||||
| PPE | Eyeshields, Gloves, type N95 (US) | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 24/25 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | YO7840000 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 28259011 | |||||||||
| Storage Class | 13 - Non Combustible Solids | |||||||||
| Hazard Classifications | Eye Irrit. 2 Skin Irrit. 2 STOT SE 3 |
|||||||||
| REACH Registrations | Active | |||||||||
| NFPA 704 |
|
Tungstic acid price More Price(37)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 223328 | Tungstic acid 99% | 7783-03-1 | 100g | $103 | 2026-04-30 | Buy |
| Sigma-Aldrich | 223328 | Tungstic acid 99% | 7783-03-1 | 500g | $376 | 2026-04-30 | Buy |
| Strem Chemicals | 93-7410 | Tungstic acid, 99% 99% | 7783-03-1 | 50g | $47 | 2026-04-30 | Buy |
| Strem Chemicals | 93-7410 | Tungstic acid, 99% 99% | 7783-03-1 | 250g | $172 | 2026-04-30 | Buy |
| Strem Chemicals | 93-7410 | Tungstic acid, 99% | 7783-03-1 | 50g | $44 | 2024-03-01 | 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
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 as a starting material in the synthesis of polynanocomposite material and polycrystalline ceramics.
Definition
ChEBI: Tungstic acid is a tungsten coordination entity. It is a conjugate acid of a hydrogentungstate.
General Description
Tungstic acid may be prepared by either digesting tungstate of lime or by treating tungsten with hydrochloric acid. 1
Flammability and Explosibility
Not classified
Tungstic acid Preparation Products And Raw materials
Raw materials
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Preparation Products
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| Hebei Longbang Technology Co., LTD | +86-18633929156 | admin@hblongbang.com | China | 972 | 58 |
| HebeiShuoshengImportandExportco.,Ltd | +86-18532138899 | L18532138899@163.com | China | 939 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418679 +86-18949832763 | info@tnjchem.com | China | 2988 | 55 |
| Xiamen AmoyChem Co., Ltd | +86-86-5926051114 | sales@amoychem.com | China | 6366 | 58 |
| BOC Sciences | +1-631-485-4226 | inquiry@bocsci.com | United States | 19936 | 58 |
| career henan chemical co | +86-0371-86658258 | factory@coreychem.com | China | 29792 | 58 |
| Shaanxi Dideu Medichem Co. Ltd | +86-29-87569262 +86-15003564040 | 1056@dideu.com | China | 3969 | 58 |
| Antai Fine Chemical Technology Co.,Limited | 18503026267 | info@antaichem.com | CHINA | 9636 | 58 |
| SIMAGCHEM CORP | +86-5922680277 +86-13806087780 | sale@simagchem.com | China | 17346 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +86-189 4982 3763 | sales@tnjchem.com | China | 34563 | 58 |
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- Apr 27，2026
View Lastest Price from Tungstic acid manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-02-02 | Tungstic acid
7783-03-1
|
10mg | 99% | 2000tons | Shaanxi Dideu Medichem Co. Ltd | ||
 |
2025-07-29 | Tungstic acid
7783-03-1
|
$6.00 | 1kg | 99% | 2000KG/Month | HebeiShuoshengImportandExportco.,Ltd | |
 |
2025-03-28 | Tungstic acid
7783-03-1
|
$6.00 | 1kg | More than 99% | 2000KG/Month | Hebei Longbang Technology Co., Ltd |
-
- Tungstic acid
7783-03-1
- 99%
- Shaanxi Dideu Medichem Co. Ltd
-
- Tungstic acid
7783-03-1
- $6.00
- 99%
- HebeiShuoshengImportandExportco.,Ltd
-
- Tungstic acid
7783-03-1
- $6.00
- More than 99%
- Hebei Longbang Technology Co., Ltd
