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CAS No.: | 1314-35-8 |
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Name: | Tungsten trioxide |
Molecular Structure: | |
Formula: | WO3 |
Molecular Weight: | 231.85 |
Synonyms: | C.I. 77901;Ditungsten hexaoxide;Tritungsten nonaoxide;Tungsten oxide;Tungsten oxide(W2O6);Tungsten oxide (W3O9);Tungsten oxide (W4O12);Tungsten trioxide (WO3);Tungsten(VI) oxide;Tungstic anhydride;Tungsticoxide;Tungstic oxide (WO3);WWO 03PB;YMDS 06; |
EINECS: | 215-231-4 |
Density: | 7.16 g/mL at 25 °C(lit.) |
Melting Point: | 1470-1475 °C |
Boiling Point: | ~1700oC |
Solubility: | Insoluble in water |
Appearance: | yellow to greenish-yellow powder |
Hazard Symbols: | Xn |
Risk Codes: | 22-36/37/38 |
Safety: | 26-36-37/39 |
PSA: | 51.21000 |
LogP: | -0.35640 |
IUPAC Name: Trioxotungsten
The MF of Trioxotungsten (1314-35-8) is O3W.
The MW of Trioxotungsten (1314-35-8) is 231.84.
Synonyms of Trioxotungsten (1314-35-8): Tungsten trioxide ; Trioxotungsten ; Tungsten, trioxo- ; Tungsten oxide violet-blue ; Tungsten oxide yellow
Form: yellow to greenish-yellow powder
Product Categories: Inorganics
Density: 7.16 g/mL at 25 °C
Water Solubility: insoluble
Melting Point: 1473 °C
EINECS: 215-231-4
Form: powder
Merck: 14,9817
Trioxotungsten (1314-35-8) is tungsten metal used as raw materials.Cemented carbide used in the system, pull tungsten wire, powder metallurgy, the system x-ray screen and fire protection fabrics. Ceramics can also be used as coloring agents and analytical reagents and so on.
MnWO4FeWO4+4NaOH→2Na2WO4+Fe(OH)2Mn(OH)2
12Na2WO4+14HCl→5Na2O12WO3+14NaCI+7H2O
5Na2O12WO3+10NH4CI→5(NH4)2O12WO3+10NaCl
5(NH4)2O12WO3+10HCl+7H2O→12H2WO4+10NH4C1
H2WO4→WO3+H2O
1. | orl-rat LDLo:840 mg/kg | HYSAAV Hygiene and Sanitation: English Translation of Gigiena Sanitariya. 31 (1966),197. |
Reported in EPA TSCA Inventory.
Moderately toxic by ingestion. Can react violently with ClF3, Li, Cl2. See also TUNGSTEN COMPOUNDS.
Safety information of Trioxotungsten (1314-35-8):
Hazard Codes Xn
Risk Statements
22 Harmful if swallowed
36/37/38 Irritating to eyes, respiratory system and skin
Safety Statements
26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36/37/39 Wear suitable protective clothing, gloves and eye/face protection
RTECS YO7760000
F 21
OSHA PEL: TWA 5 mg(W)/m3
ACGIH TLV: TWA 5 mg(W)/m3
NIOSH REL: TWA 5 mg(W)/m3