OSHA IMIS Code Number: P101

Chemical Abstracts Service (CAS) Registry Number: 93763-70-3

Chemical Description and Physical Properties:

a hydrous glassy volcanic rock expanded at 1400-2500°F to form thin flakes useful for their light weight

OSHA Permissible Exposure Limit (PEL):

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

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

Health Effects: Nuisance particulates-Accumulation in lungs (HE19)

Primary Laboratory Sampling/Analytical Method (SLC1):

• See Particulates not otherwise regulated (Respirable Fraction)
  

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