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Chemical Sampling Information (CSI)
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General Description

OSHA IMIS Code Number: K100

Chemical Abstracts Service (CAS) Registry Number: 1332-58-7

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: GF1670500

NIOSH Pocket Guide to Chemical Hazards, Kaolin: chemical description, physical properties, potentially hazardous incompatibilities, and more

Chemical Description and Physical Properties:

mineral dust formed by weathering of aluminum silicates, particularly feldspar; it is a component of clay

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: See Dust (Respirable Nuisance) or Dust, Total

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 2 mg/m3 TWA; The value is for particulate matter containing no asbestos and <1% crystalline silica. (Respirable fraction); Appendix A4 (Not Classifiable as a Human Carcinogen)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 5 mg/m3 TWA

Health Factors

Health Effects: Nuisance particulates accumulation in lungs (Kaolinosis) (HE19)

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

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