TUNGSTEN(VI) OXYCHLORIDE
Synonym(s):Tungsten(VI) chloride oxide;Tungsten(VI) oxide chloride
- CAS NO.：13520-78-0
- Empirical Formula: Cl4OW
- Molecular Weight: 341.65
- MDL number: MFCD00011465
- EINECS: 236-863-7
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:17:39
What is TUNGSTEN(VI) OXYCHLORIDE?
Description
Tungsten(VI) oxytetrachloride, WOCl4, is a diamagnetic solid used to prepare other tungsten complexes. The orange-colored compound is soluble in nonpolar solvents, while it reacts with alcohols and water and forms adducts with Lewis bases.
Chemical properties
Dark-red, acicular crystals. Decomposed by water and moist air. Keep in sealed glass container. Bp 227.5C, mp 211C, d 11.92. Soluble in carbon disulfide.
The Uses of TUNGSTEN(VI) OXYCHLORIDE
Incandescent lamps.
What are the applications of Application
Tungsten(VI) oxychloride is a diamagnetic orange solid commonly used as a source of Tungsten
Preparation
It consists of weakly associated square pyramidal monomers.
WOCl4 is formed from WO3 or WCl6.
WO3 + 2SOCl2→WOCl4+2SO2
WCl6 + (Me3Si )2O→WOCl4+ 2Me3SiCl
Hazard
Irritant.
Properties of TUNGSTEN(VI) OXYCHLORIDE
| Melting point: | 211 °C(lit.) |
| Boiling point: | 337°C |
| Density | 11.920 |
| solubility | reacts with H2O; soluble in benzene, CS 2 |
| form | red hygroscopic crystals |
| color | red hygroscopic crystals, crystalline |
| Water Solubility | decomposed by H2O; soluble CS2, benzene [KIR83] [HAW93] |
| Sensitive | air sensitive, moisture sensitive |
Safety information for TUNGSTEN(VI) OXYCHLORIDE
| Signal word | Danger |
| Pictogram(s) |
 Corrosion Corrosives GHS05  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H314:Skin corrosion/irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P260:Do not breathe dust/fume/gas/mist/vapours/spray. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for TUNGSTEN(VI) OXYCHLORIDE
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