National Toxicology Program

National Toxicology Program

Testing Status of Vat blue 4 - 81776


CASRN: 81-77-6

Formula: C28-H14-N2-O4

Synonyms/Common Names

  • 6,15-Dihydro-5,9.14,18-anthrazinetetrone (9CI)

Known Uses

Dying unmordanted cotton, pigment in quality paints and enamels

Chemical Properties

Toxicity Effects (HSDB)

Genetic Toxicology

  • In Vitro Cytogenetics (CA/SCE)  (143331)  Completed 
    • Sister Chromatid Exchange Positive 
    • Chromosome Aberrations Negative 
  • Salmonella  (955424)  Completed 
    •  Negative 
NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.