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Chemical Sampling Information (CSI)
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General Description

Synonyms: Calate; CaCO3

OSHA IMIS Code Number: L100

Chemical Abstracts Service (CAS) Registry Number: 1317-65-3

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: EV9580000; 23087

Chemical Description and Physical Properties:

inert sedimentary mineral, principally CaCO3 formed in marine environments by chemical or biochemical action; see also Dolomite

Exposure Limits

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 Factors

Health Effects: Nuisance particulates accumulation in lungs (HE19) Vapors or gases (HE19)

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Tared Low Ash Polyvinyl Chloride (LAPVC) filter 5 microns preceded by 10 mm Nylon Cyclone
    maximum volume: 816 Liters
    minimum volume: 400 Liters
    maximum flow rate: 1.7 L/min
    current analytical method: Gravimetric
    method reference: 11, 12
    sampling analytical error: 0.10
    method classification: Fully Validated
    note: Field method. If the gross weight of the sample yields a concentration below the standard for the air contaminate, do not submit sample to the Salt Lake Technical Center for analysis.
    alternate analytical method: Atomic Absorption Spectroscopy; AAS
    method reference: 2 (OSHA ID-121)
    method classification: Not Validated
    note: An elemental analysis is performed for total Calcium and reported as the compound.

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