NAME: Limestone (Respirable Fraction)

SYNONYM(s): Calate; CaCO3

IMIS: L100

CAS: 1317-65-3

NIOSH: RTECS EV9580000; 23087

DESCRIPTION:

Inert sedimentary mineral, principally CaCO3 formed in marine environments by chemical or biochemical action. See also Dolomite.

OSHA GENERAL INDUSTRY PEL: See Dust (Respirable Nuisance) or Dust, Total

NIOSH REL: 5 mg/m3 TWA

HEALTH EFFECTS: Nuisance particulates accumulation in lungs (HE19) Vapors or gases (HE19) IC_CAS_NUMBEL091317-65-3

PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):

MEDIA: Tared Low Ash Polyvinyl Chloride (LAPVC) filter 5 microns preceded by 10 mm Nylon Cyclone
MAX V: 816 Liters   MIN V: 400 Liters   MAX F: 1.7 L/min
ANL 1: Gravimetric
REF: 11, 12
SAE: 0.10
CLASS: 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 SLTC for analysis.
ANL A: Atomic Absorption Spectroscopy; AAS
REF: 2 (OSHA ID-121)
CLASS: Not Validated
NOTE: An elemental analysis is performed for total Calcium and reported as the compound.