*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : GC2650000 CHEMICAL NAME : Chrysotile, cobalt I LAST UPDATED : 199009 DATA ITEMS CITED : 1 MOLECULAR FORMULA : Co6.O10-Si4.H8-O8 MOLECULAR WEIGHT : 762.02 COMPOUND DESCRIPTOR : Tumorigen SYNONYMS/TRADE NAMES : * Cobalt chrysotile *** HEALTH HAZARD DATA *** ** TUMORIGENIC DATA ** TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Intrapleural SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 300 mg/kg/8W-I TOXIC EFFECTS : Tumorigenic - equivocal tumorigenic agent by RTECS criteria Skin and Appendages - breast REFERENCE : EKSODD Eksperimental'naya Onkologiya. Experimental Oncology. (V/O Mezhdunarodnaya Kniga, 113095 Mosow, USSR) V.1- 1979- Volume(issue)/page/year: 11(4),26,1989 *** END OF RECORD ***