Asbestos |
Synonyms & Trade Names Actinolite, Actinolite asbestos, Amosite (cummingtonite-grunerite), Anthophyllite, Anthophyllite asbestos, Chrysotile, Crocidolite (Riebeckite), Tremolite, Tremolite asbestos |
CAS No. 1332-21-4 |
RTECS No. CI6475000 |
DOT ID & Guide 2212 171 (blue, brown)
2590 171 (white) |
FormulaHydrated mineral silicates |
Conversion |
IDLH Ca [N.D.]
See: IDLH INDEX |
Exposure Limits NIOSH REL: Ca See Appendix A See Appendix C
OSHA PEL: [1910.1001] [1926.1101] See Appendix C |
Measurement Methods
NIOSH 7400 , 7402;
OSHA ID160 , ID191
See: NMAM or OSHA Methods |
Physical Description White or greenish (chrysotile), blue (crocidolite), or gray-green (amosite) fibrous, odorless solids. |
MW: Varies |
BP: Decomposes |
MLT: 1112°F (Decomposes) |
Sol: Insoluble |
VP: 0 mmHg (approx) |
IP: NA |
Sp.Gr: ? |
Fl.P: NA |
UEL: NA |
LEL: NA |
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| Noncombustible Solids |
Incompatibilities & Reactivities None reported |
Exposure Routes inhalation, ingestion, skin and/or eye contact |
Symptoms Asbestosis (chronic exposure): dyspnea (breathing difficulty), interstitial fibrosis, restricted pulmonary function, finger clubbing; irritation eyes; [potential occupational carcinogen] |
Target Organs respiratory system, eyes |
Cancer Site[lung cancer] |
Personal Protection/Sanitation (See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: Daily
Remove: No recommendation
Change: Daily
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First Aid (See procedures)
Eye: Irrigate immediately
Breathing: Fresh air
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Respirator Recommendations (See Appendix E)
NIOSH At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus Escape:
(APF = 50) Any air-purifying, full-facepiece respirator with an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection |
| See also: INTRODUCTION
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