Asbestos (12001-28-4)

Some forms of Asbestos, crocidolite (12001-28-4)'s are asbestiform, notably crocidolite, also known as blue asbestos.It is a sodium-rich member of the amphibole group of minerals. It crystallizes in the monoclinic system, usually as long prismatic crystals showing a diamond-shaped cross section, but also in fibrous, bladed, acicular, columnar, and radiating forms.Long term occupational exposure to the dust can result in lung cancer.Cleavage is perfect, two directions in the shape of a diamond; fracture is uneven, splintery. It is often translucent to nearly opaque.The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment.

NTP 10th Report on Carcinogens. IARC Cancer Review: Animal Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 14 (1977),p. 11.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) , IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 2 (1973),p. 17.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 14 (1977),p. 11.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . EPA Genetic Toxicology Program.