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Chemical Sampling Information (CSI)
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General Description

Synonyms: Muscovite; Amber mica; Roscoelite; Lipidolite; Phlogopite; Biotite Zinnwaldite; Fluorophlogopite; Margarite

OSHA IMIS Code Number: 9075

Chemical Abstracts Service (CAS) Registry Number: 12001-26-2

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: VV8760000

Chemical Description and Physical Properties:

colorless, odorless flakes or sheets with <1% quartz
molecular weight: 797
vapor pressure: approx. 0 mm

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 20 mppcf (Silicates) (Z-3)

Construction Industry: 20 mppcf (Mineral Dusts Table)

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 3 mg/m3 TWA; The value is for particulate matter containing no asbestos and <1% crystalline silica. (Respirable fraction)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 3 mg/m3 TWA

Health Factors

Potential Symptoms: Pneumoconiosis, coughing, dyspnea; weakness; weight loss

Health Effects: Accumulation in lungs (Pneumoconiosis) (HE10)

Affected Organs: Lungs

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: 960 Liters
    maximum flow rate: 2.0 L/min
    current analytical method: Gravimetric Analysis
    method reference: 11, 12
    sampling analytical error: 0.10
    method classification: Fully Validated
    note: 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: X-ray Diffraction
    method reference: 2 (OSHA ID-142)
    sampling analytical error: 0.19
    method classification: Fully Validated
    note: Submit bulk sample in separate mailing container at time air samples are submitted. Indicate on sample sheet that a bulk sample has been submitted. Analysis is for Quartz.

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