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Kaolin

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Synonyms & Trade Names
China clay, Clay, Hydrated aluminum silicate, Hydrite, Porcelain clay [Note: Main constituent of Kaolin is Kaolinite (Al2Si2O5(OH)4).]
CAS No.
1332-58-7
RTECS No.
GF1670500
DOT ID & Guide
Formula
Conversion
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)
OSHA PEL
TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp) See Appendix G
Measurement Methods
NIOSH 0500 , 0600
See: NMAM or OSHA Methods
Physical Description
White to yellowish or grayish powder. [Note: When moistened, darkens & develops a clay-like odor.]
Molecular Weight
varies
Boiling Point
?
Melting Point
?
Solubility
Insoluble
Vapor Pressure
0 mmHg (approx)
Ionization Potential
NA
Specific Gravity
1.8-2.6
Flash Point
NA
Upper Explosive Limit
NA
Lower Explosive Limit
NA
Noncombustible Solid
Incompatibilities & Reactivities
None reported
Exposure Routes
inhalation, skin and/or eye contact
Symptoms
Chronic pulmonary fibrosis, stomach granuloma
Target Organs
respiratory system, stomach
Personal Protection/Sanitation
(See protection codes)
Skin:No recommendation
Eyes:No recommendation
Wash skin:No recommendation
Remove:No recommendation
Change:No recommendation
First Aid
(See procedures)
Eye:Irrigate immediately

Breathing:Fresh air
Respirator Recommendations

Not available.

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 1144
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health