NAME: Silica, Crystalline Quartz, Respirable Dust
SYNONYM(s):
Silica (Quartz, respirable) prior to 9/1/89
IMIS: 9010
CAS: 14808-60-7
DESCRIPTION:
Solid.
Exposure Limits
OSHA GENERAL INDUSTRY STANDARDS:
(See 29 CFR 1910.1000 Table Z-3)
THRESHOLD LIMIT VALUE:
0.1 mg/m3 TWA; (Respirable fraction)
RECOMMENDED EXPOSURE LIMIT:
0.05 mg/m3 TWA; Potential carcinogen
Health Factors
IARC:
Silica - Group 1 Carcinogenic to humans (Crystalline Silica) Vol 68
HEALTH EFFECTS:
Pneumoconiosis (Silicosis) (HE10)
Monitoring
SLC1:
MEDIA:
Tared Low Ash Polyvinyl Chloride (LAPVC) filter . 5 microns preceded by 10 mm Nylon Cyclone
MAX V:
816 Liters MAX F:
1.7 L/min
ANL 1:
X-ray Diffraction; XRD .
REF:
2 (OSHA ID-142)
SAE:
0.16
CLASS:
Fully Validated
NOTE:
Collect a sample of the bulk substance and send to the lab in a separate mailing container at the time the air samples are submitted. Indicate on the sample sheet that a bulk sample has been submitted. For Si02, a high volume area or settled dust sample is preferred. If submitting high volume sample collect at least 5 grams of dust, clearly mark samples to be used for reference as a bulk. Any sample weight between 0.10 mg and 5.0 mg is acceptable (0.5 to 3.0 mg is preferred). If they are present in the work environment, the following major interferences should be noted: aluminum phosphate, feldspars (microcline orthoclase, plagioclase), graphite, iron carbide, lead sulphate, micas (biotite, muscovite), montomorillonite, potash, sillimanite, silver chloride, talc and zircon (zirconium silicate). Quartz and cristobalite may be submitted on the same filter, otherwise, submit as separate filter.
WIPE:
No
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