National Toxicology Program

National Toxicology Program

Testing Status of Tungsten trioxide - M030034


CASRN: 1314-35-8

Formula: O3-W

Synonyms/Common Names

  • Tungsten Blue
  • Tungstic acid anhydride

Known Uses

Pigment; used to form tungsten metal powder used to make cemented carbide parts; used in the manufacture of lighting, electrical, electronic, heating and welding applications

Chemical Properties

Toxicity Effects (HSDB)

Nomination Background

Genetic Toxicology

  • Salmonella  (A76915)  Completed 
    •  Negative 
NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.