National Toxicology Program

National Toxicology Program
http://ntp.niehs.nih.gov/go/ts-10449-x

Testing Status of 6-Nitrobenzimidazole - 10449-X

 

CASRN: 94-52-0

Formula: C7-H5-N3-O2

Synonyms/Common Names

  • 5-Nitro-1H-benzimidazole (9CI)

Known Uses

Antifogging agent in photographic developer (HSDB 1990)

Chemical Properties

Toxicity Effects (HSDB)

Short-Term Toxicity

  • 14-Day (Dosed-Feed)  (C01912)  Completed 
    • Rats: F344/N; Mice: B6C3F1
  • 13-Week (Dosed-Feed)  (C01912)  Completed 
    • Rats: F344/N; Mice: B6C3F1

Long-Term Carcinogenicity

  • 2-Year (Dosed-Feed)  (C01912)  Report Complete 
    • TR-117 (NIH Number: 79-1372)  (Peer Review Approval 10/25/1978A )
      Bioassay of 6-Nitrobenzimidazole for Possible Carcinogenicity (CASRN 94-52-0)
    • Rats: F344/N; Mice: B6C3F1
    • Carcinogenesis Results
      • Male Rats Negative 
      • Female Rats Negative 
      • Male Mice Positive 
      • Female Mice Positive 

Genetic Toxicology

  • In Vitro Cytogenetics (CA/SCE)  (753791)  Completed 
    • Sister Chromatid Exchange Positive 
    • Chromosome Aberrations Positive 
  • Drosophila  (820174)  Completed 
    • Citation: Valencia, R., Mason, J.M., Woodruff, R.C., and Zimmering, S. Chemical mutagenesis testing in Drosophila: III. Results of 48 coded compounds tested for the National Toxicology Program. Environ. Mutagen. Vol. 7 (1985) 325-348
    • Reciprocal Translocation/Sex-Linked Recessive Lethal Negative 
  • Salmonella  (176359)  Completed 
    • Citation: Dunkel, V., Zeiger, E., Brusick, D., McCoy, E., McGregor, D., Mortelmans, K., Rosenkranz, H., and Simmon, V. (1985) Reproducibility of microbial mutagenicity assays. II. Testing of carcinogens and noncarcinogens in Salmonella typhimurium and Escerichia coli. Environ. Mutagen. 7 (Suppl 5): 1-248.
    • Citation: Mortelmans, K., Haworth, S., Lawlor, T., Speck, W., Tainer, B., and Zeiger, E. Salmonella mutagenicity tests. II. Results from the testing of 270 chemicals Environ. Mutagen. Vol. 8 (Suppl 7) (1986) 1-119
    •  Positive 
  • Salmonella  (CV-219)  Completed 
    • Citation: Dunkel, V., Zeiger, E., Brusick, D., McCoy, E., McGregor, D., Mortelmans, K., Rosenkranz, H., and Simmon, V. (1985) Reproducibility of microbial mutagenicity assays. II. Testing of carcinogens and noncarcinogens in Salmonella typhimurium and Escerichia coli. Environ. Mutagen. 7 (Suppl 5): 1-248.
    • Citation: Dunkel, V., Zeiger, E., Brusick, D., McCoy, E., McGregor, D., Mortelmans, K., Rosenkranz, H., and Simmon, V. Reproducibility of microbial mutagenicity assays. II. Testing of carcinogens and noncarcinogens in Salmonella typhimurium and Escerichia coli Environ. Mutagen. Vol. 7 (Suppl 5) (1985) 1-248
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