Talc (containing no asbestos and less than 1% quartz)
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CAS
14807-96-6
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Mg3Si4O10(OH)2
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RTECS
WW2710000
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Synonyms & Trade Names
Hydrous magnesium silicate, Steatite talc
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DOT ID & Guide
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Exposure
Limits
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NIOSH REL: TWA 2 mg/m3 (resp)
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OSHA PEL†: TWA 20 mppcf
See Appendix C (Mineral Dusts) |
IDLH
1000 mg/m3
See: 14807966
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Conversion
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Physical Description
Odorless, white powder.
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MW: Varies
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BP: ?
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MLT: 1652°F to 1832°F
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Sol: Insoluble
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VP: 0 mmHg (approx)
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IP: NA
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Sp.Gr: 2.70-2.80
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Fl.P: NA
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UEL: NA
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LEL: NA
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Noncombustible Solid
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Incompatibilities & Reactivities
None reported
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Measurement Methods
NIOSH P&CAM355 (III)
See: NMAM or OSHA Methods
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Personal Protection & Sanitation (See protection codes)
Skin: No recommendation
Eyes: No recommendation
Wash skin: No recommendation
Remove: No recommendation
Change: No recommendation
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First Aid (See procedures)
Eye: Irrigate immediately
Breathing: Fresh air
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Respirator Recommendations
NIOSH
Up to 10 mg/m3:
(APF = 5) Any quarter-mask respirator. Click here for information on selection of N, R, or P filters.
Up to 20 mg/m3:
(APF = 10) Any particulate respirator equipped with an N95, R95, or P95 filter (including N95, R95, and P95 filtering facepieces) except quarter-mask respirators. The following filters may also be used: N99, R99, P99, N100, R100, P100. Click here for information on selection of N, R, or P filters.
(APF = 10) Any supplied-air respirator
Up to 50 mg/m3:
(APF = 25) Any powered air-purifying respirator with a high-efficiency particulate filter.
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
Up to 100 mg/m3:
(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.
(APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode
(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and a high-efficiency particulate filter
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Up to 1000 mg/m3:
(APF = 1000) Any supplied-air respirator operated in a pressure-demand or other positive-pressure mode
Emergency or planned entry into unknown concentrations or IDLH conditions:
(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
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Exposure Routes
inhalation, skin and/or eye contact
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Symptoms
Fibrotic pneumoconiosis; irritation eyes
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Target Organs
Eyes, respiratory system, cardiovascular system
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See also: INTRODUCTION
See ICSC CARD: 0329 See MEDICAL TESTS: 0207
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