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Talc Hazards Overview

Health concerns about talc revolve mainly around the non-platiform content, the extent to which these are asbestos, and how high the length:width ratio of non-asbestos particles needs to be to make them a hazard also.

ACGIH TLV and OSHA PEL: 2 mg/cubic meter, 8 hr. TWA, Respirable Dust (talc containing no asbestos fibers).
CAS: 71949-90-1
Chlorite (typical 3%) ACGIH TLV: 10 mg/cubic meter 8 hr. TWA
CAS: 14808-60-7 Silica: (typical 2%) ACGIH TLV & OSHA PEL: 0.1 mg/cubic meter 8 hr. TWA, Respirable Dust

Wilson's RISK Scale of Material Hazards
(1-4 higher numbers are increased hazard)

R 1 (reactivity)
I 2 (inhalation)
S 1 (skin contact)
K 1 (kindling/fire)

May cause irritation to upper respiratory tract.

Pre-existing lung disease may be aggravated by exposure to dust. Prolonged over exposure can cause Talcosis (a pulmonary fibrosis of the lungs). Although talc is a fibrous magnesium silicate as is asbestos, it does not have the same effect on the lungs. The two minerals are closely associated, and most commercial talcs do contain some asbestos.

Talc is not characterized as a carcinogen by NTP, IARC, ACGIH or OSHA.

Talc may contain extremely small amounts (less than 2 ppm) of substances regulated under drinking water regulations: e.g. arsenic, beryllium, cadmium, chromium, lead, mercury, nickel.

Phsyical Data:

References

  1. An excellent discussion of talc hazards can be found in 'Documentation of the Threshold Limit Values and Biological Exposure Indices' from the American Conference of Industrial Hygienists, Cincinnati, OH
  2. 'Patty's Industrial Hygiene and Toxicology', John Wiley & Sons has information on asbestosis and talcosis.

Related Information

Links

Materials 4392 Rosa Blanca
Materials CT-30 Talc
Materials Desertalc
Materials Glacier 200 Talc
Materials I.T. Talc
Materials Luzenac Talc 00S
Materials Noor Talc
Materials Roudnice Talc
Materials Sierralite Talc
Materials VanTalc
Materials FinnTalc
Materials Cimcoat 325 Talc
Materials Ceramitalc No. 1
Materials Ceramitalc 10A
Materials Nytal Talc
Materials Talc
Materials Suzorite 325-PE
Materials Amtalc-C98
Materials Pioneer 2661 Talc
Materials Caltalc
Hazards Asbestos: A Difficult-to-Repace Material
Hazards Talc Toxicology
URLs http://www.ilo.org/public/english/protection/safework/cis/products/icsc/dtasht/_icsc00/icsc0014.htm
Asbestos at ilo.org
URLs http://en.wikipedia.org/wiki/Asbestos
Asbestos at Wikipedia
Oxides Sm2O3 -

By Tony Hansen


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