Talc is a natural mineral of the general chemical composition Mg3Si4O10(OH)2 (1). The composition varies widely from one geologic deposit to another and even within the same deposit. The main component, crystalline hydrated silicate of magnesium, is usually found as plates but rarely may also be found as fibers. In many talc deposits, other silicates such as the amphiboles, tremolite and anthophyllite, as well as serpentines, antigorite, lizardite, and even chrysotile, may be present. This chapter discusses only the health effects associated with talc that does not contain asbestiform fibers. However, a number of studies have been conducted to determine the health effects of talc in which the purity of the material was not known. The discussion of asbestos is covered in Chapter 12, Asbestos. 1.0.1 CAS Number: [14807-96-6] 1.0.2 Synonyms:
Hydrous magnesium silicate; non abestiform talc; steatite talc 1.0.3 Trade Names for Talc
Synonyms for talc include the following: Agalite; Asbestine; B9 finntalc P40; B13; Beaver white 200; CP-10-40; CP 38-33; Crystalite; CR 6002; Desertalc 57; Emtal 500; Emtal 549; Emtal 596; Emtal 599; Fibrene C 400; French chalk; FW-XO; Hydrous magnesium silicate; HSDB 830; IT Extra; LMR 100; Microneeca K 1; Micro white 5000A; Microtalco IT extra; Mistron; MP 25-38; MP 40-27; MP 45-26; MST; MT 12-50; Mussolinite; nonfibrous talc; NCI C06018; Nytal 200; Nytal 400; Pk-C; Pk-N; Polytal 4641; Polytal 4725; Potstone; Snowgoose; Soapstone; Steatite; Steawhite; Supreme; Supreme dense; Talcan PK-P; Talcron CP 44-31; Talcum (2).
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