Testing Information

Testing Status of Agents at NTP

Ethyl tellurac

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http://ntp.niehs.nih.gov/go/TS-10777-E

CASRN: 20941-65-5

Formula: C20-H40-N4-S8-TE

Synonyms/Common Names:

  • DIETHYLCARBAMODITHIOIC ACID TETRAKIS(ANHYDROSULFIDE) WITH THIOTELLURIC ACID (114TES4) (9CI)
  • DIETHYLDITHIOCARBAMIC ACID TELLURIUM SALT
  • Ethyl tellurac
  • TELLURIUM DIETHYLDITHIOCARBAMATE
  • TETRAKIS(DIETHYLDITHIOCARBAMATO)TELLURIUM TELLURAC
  • TETRAKIS(DIETHYLCARBAMODITHIOATO-S,S')TELLURIUM (9CI)

Known Uses:

VULCANIZATION; RUBBER ACCELERATOR

Short-Term Toxicity

  • 13-WEEK (Dosed-Feed)  (C02857) Completed 
    • NTIS No. PB298513  (Peer Review 12/13/1978)
      Citation: Bioassay of Ethyl Tellurac for Possible Carcinogenicity (CAS No. 20941-65-5)
    • Rats: F344/N; Mice: B6C3F1
    • Dose: 10 PER GROUP

Long-Term Carcinogenicity

  • 2-YEAR (Dosed-Feed)  (C02857) Report Complete 
    • TR-152 (NTIS No. PB298513)  (Peer Review 12/13/1978)
      Bioassay of Ethyl Tellurac for Possible Carcinogenicity (CAS No. 20941-65-5)
    • Rats: F344/N; Mice: B6C3F1
    • Carcinogenesis Results
      • Male Rats Equivocal 
      • Female Rats Negative 
      • Male Mice Equivocal 
      • Female Mice Equivocal 
    • Dose: MR: 0,300,600, FR: 0,150,300, MM: 0,1255,3132 (AVG), FM: 0,2132,4915 (AVG) PPM/50 PER GROUP

Genetic Toxicology

  • In Vitro Cytogenetics (CA/SCE)  (274642) Completed 
    • Chromosome Aberation Inconclusive 
    • Sister Chromatid Exchange Negative 
  • Drosophila  (405582) 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 
  • Mouse Lymphoma  (326120) Completed 
    •  Positive 
  • Salmonella  (068612) Completed 
    • 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
    •  Negative 
  • Salmonella  (470384) Completed 
    • 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
    •  Negative 

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Web page last updated on January 22, 2009