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Chemical Sampling Information (CSI)
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General Description

Synonyms: Aragonite; Oyster Shells; Calcite; Chalk; Limestone; Marble; Marl; Travertine

OSHA IMIS Code Number: C130

Chemical Abstracts Service (CAS) Registry Number: 1317-65-3; 471-34-1

Chemical Description and Physical Properties:

solid

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: See Dust (Respirable Nuisance) 5.0 mg/m3 (TABLE Z-3) or Dust, Total 15.0 mg/m3 (TABLE Z-3)

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

Health Factors

Health Effects: Nuisance Particulates (HE19) IC_CAS_NUMBEL19471-34-1; 1317-65-3

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: 480 Liters
    maximum flow rate 1.7 L/min
    current analytical method: Gravimetric
    method reference 11, 12
    sampling and analytical error: 0.10
    method classifacation: 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 the sample to SLTC for analysis.
    alternate analytical method: Atomic Absorption Spectroscopy; AAS
    reference: 2 (OSHA ID-121)
    method classifacation: Not Validated
    note: An elemental analysis is performed for total calcium and reported as the compound.

Condition: Calcium carbonate is soluble in concentrated mineral acids.

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