95420

Tungstic acid

≥98.0% (calcined substance, T), powder

• Synonym(s): Tungstic(VI) acid
• Linear Formula: H₂WO₄
• CAS Number: 7783-03-1
• Molecular Weight: 249.85
• EC Number: 231-975-2
• MDL number: MFCD00011336
• UNSPSC Code: 12352300
• PubChem Substance ID: 57653679
• NACRES: NA.23

Properties

• Quality Level: 200
• Assay: ≥98.0% (calcined substance, T)
• form: powder
• impurities: ≤0.2% insoluble matter in NaOH
• loss: ≤9.0% loss on ignition
• density: 5.5 g/mL at 25 °C (lit.)
• SMILES string: O[W](O)(=O)=O
• InChI: 1S/2H2O.2O.W/h2*1H2;;;/q;;;;+2/p-2
• InChI key: CMPGARWFYBADJI-UHFFFAOYSA-L

Description

General description

Tungstic acid may be prepared by either digesting tungstate of lime or by treating tungsten with hydrochloric acid. 1

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H315,H319,H335
• Precautionary Statements: P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves