NIOSH Pocket Guide to Chemical Hazards

Kaolin CAS 1332-58-7

RTECS GF1670500
Synonyms & Trade Names
China clay, Clay, Hydrated aluminum silicate, Hydrite, Porcelain clay [Note: Main constituent of Kaolin is Kaolinite (Al2Si2O5(OH)4).]
DOT ID & Guide
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)
IDLH N.D. Conversion
Physical Description
White to yellowish or grayish powder. [Note: When moistened, darkens & develops a clay-like odor.]
MW: varies
BP: ?
MLT: ?
Sol: Insoluble
VP: 0 mmHg (approx)
IP: NA

Sp.Gr: 1.8-2.6
Fl.P: NA
UEL: NA
LEL: NA

Noncombustible Solid
Incompatibilities & Reactivities
None reported
Measurement Methods
NIOSH 0500, 0600
Personal Protection & Sanitation
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 To be added later
Exposure Routes inhalation, skin and/or eye contact
Symptoms Chronic pulmonary fibrosis, stomach granuloma
Target Organs respiratory system, stomach
See also: INTRODUCTION