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NIOSH

KAOLIN

ICSC: 1144

Hydrated aluminium silicate
China clay
Argilla
H2Al2Si2O8 H2O
Molecular mass: 258 (approx)
ICSC # 1144 		CAS # 1332-58-7
RTECS # GF1670500
October 25, 1995 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Not combustible.

In case of fire in the surroundings: use appropriate extinguishing media.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST!

•INHALATION
Avoid inhalation of fine dust and mist. Local exhaust or breathing protection.
Fresh air, rest.
•SKIN
Protective gloves.
Rinse and then wash skin with water and soap.
•EYES
Safety spectacles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION


SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting. Personal protection: P1 filter respirator for inert particles.


ICSC: 1144 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

KAOLIN

ICSC: 1144

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
WHITE POWDER.

PHYSICAL DANGERS:


CHEMICAL DANGERS:


OCCUPATIONAL EXPOSURE LIMITS:
TLV: (particulate matter containing no asbestos and <1% crystalline silica)
(Respirable fraction)
2 mg/m3 as TWA; A4 (not classifiable as a human carcinogen); (ACGIH 2008).
OSHA PEL†: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp)
NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)
NIOSH IDLH: N.D. See: IDLH INDEX


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol.

INHALATION RISK:
Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly on spraying or when dispersed, especially if powdered.

EFFECTS OF SHORT-TERM EXPOSURE:


EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Lungs may be affected by repeated or prolonged exposure to dust particles. The substance may have effects on the lungs , resulting in fibrosis (kaolinosis) and impaired functions.

PHYSICAL
PROPERTIES

Relative density (water = 1): 2.6
Solubility in water: none

ENVIRONMENTAL
DATA


N O T E S

This card applies to kaolin containing <1% crystalline silica. If kaolin contains more than 1% crystalline silica, fusion temperature 1785°C. Depending on the degree of exposure, periodic medical examination is suggested. Fitrol, Glomax, Kaophills-2 are trade names. See also ICSC0808 Quartz. Card has been partly updated in April 2005. See sections Occupational Exposure Limits, EU classification, Emergency Response.

ADDITIONAL INFORMATION



ICSC: 1144 KAOLIN
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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