This document may not reflect OSHA's respirable silica rule published on March 25, 2016.
For more information on the new rule, see OSHA's Final Rule on Respirable Crystalline Silica Page.

Silica, Crystalline Tripoli (as Quartz), Respirable Dust

General Description

  • Synonyms: Tripoli; Silica, Crystalline-Tripoli
  • OSHA IMIS Code Number: S114
  • Chemical Abstracts Service (CAS) Registry Number: 1317-95-9
  • NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: VV7336000; 77722

Exposure Limits

  • American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.1 mg/m3 TWA; respirable fraction of contained respirable quartz
  • National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.05 mg/m3 TWA; Potential carcinogen

Health Factors

  • Carcinogenic Classification:
    • International Agency for Research on Cancer (IARC): Silica - Group 2A, probably carcinogenic to humans (Crystalline + Silica)

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

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Index

By Name

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

By CAS Number
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