Tridymite (SiO2) (9CI) cas no:15468-32-3

NameTridymite (SiO2) (9CI)
CAS15468-32-3
SynonymsTridymite(8CI); Christensenite; Tridymite 118; a-Tridymite
EINECS(EC#)239-487-1
Molecular FormulaO2Si
Molecular Weight60.09

Hazard TLV: (silica, crystalline) Respirable Fraction: 0.05 mg/m3.
Safety

Confirmed carcinogen with experimental tumorigenic data. Poison by intratracheal route. Human systemic effects by inhalation: cough, dyspnea. About twice as toxic as silica in causing silicosis. Mutation data reported.      

1.		sce-hmn:lyms 13,514 µg/kg		BJIMAG    British Journal of Industrial Medicine. 47 (1990),110.
2.		ihl-hmn TCLo:16 mppcf/8H/17.9Y-I:PUL		NTIS**    National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) PB246-697 .
3.		itr-rat LDLo:200 mg/kg		BJIMAG    British Journal of Industrial Medicine. 10 (1953),9.