Tungsten(VI) dioxydichloride

  • Tungsten dioxydichloride
  • Tungsten dioxychloride
  • Dichlorodioxotungsten
  • Tungsten dioxide dichloride
Formula
Cl2O2W
Description
Light yellow powder with an acrid odor.

Registry Numbers and Inventories.
CAS
13520-76-8
EC (EINECS/ELINCS)
236-862-1
S: 7/8 26 27 36/37/39
UN (DOT)
3260
Korea ECL
Listed

Properties.
Formula
Cl2O2W
Formula mass
286.75
Melting point, °C
266
Solubility in water
Soluble

Hazards and Protection.
Storage
This product is hygroscopic. Protect from humidity and water. Store under dry inert gas. Keep container tightly sealed. Store in cool, dry conditions in well sealed containers. Store under lock and key and with access restricted to technical experts or their assistants only.
Protection
Protective work clothing. Chemical protective gloves. Safety glasses or goggles.
Small spills/leaks
Use neutralizing agent. Ensure adequate ventilation.
Stability
Decomposition will not occur if used and stored according to specifications.
Incompatibilities
Water/moisture, oxidizing agents, alkali metals.
Decomposition
Hydrogen chloride, metal oxide fumes.

Fire.
Fire fighting
Extinguish with CO2, sand, extinguishing powder. Do not use water. Wear self-contained respirator. Wear fully protective impervious suit.
Combustion products
Hydrogen chloride, metal oxide fume.
Health
2
 
Flammability
0
 
 
Reactivity
2
 

Health.
Exposure limit(s)
ACGIH TLV: 1 mg/m3 (as W - soluble compounds)
Exposure effects
Tungsten compounds may be irritating to the eyes and respiratory tract. Animal studies suggest that soluble tungsten compounds have the potential for causing adverse health effects involving the gastrointestinal tract and central nervous system. These effects have not been observed in humans. Chronic exposure to tungsten compounds may result in permanent lung damage.
   Ingestion
Swallowing will lead to a strong corrosive effect on mouth and throat and to the danger of perforation of esophagus and stomach.
   Inhalation
Inhalation may result in respiratory effects such as inflammation, edema, and chemical pneumonitis. May cause coughing, wheezing, laryngitis, shortness of breath, headache, nausea and vomiting.
   Skin
May cause skin burns or irritation depending on the severity of the exposure.
   Eyes
Eye contact may result in permanent damage and complete vision loss.

First aid
 
   Ingestion
Seek immediate medical treatment.
   Inhalation
Supply fresh air. If required, provide artificial respiration. Keep patient warm. Seek immediate medical advice.
   Skin
Immediately wash with water and soap and rinse thoroughly. Seek immediate medical advice.
   Eyes
Rinse opened eye for several minutes under running water. Then consult a doctor.

Transport.
UN number
3260
Response guide
Hazard class
8
Packing Group
II