September 2010
NIOSH Publication Number 2010-168c

Kaolin

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
 
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)
Measurement Methods

NIOSH 0600
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
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   See ICSC CARD: 1144