IPCS INCHEM Home
CROCIDOLITE
ICSC: 1314
Peer-Review Status: 27.11.1998 Validated
Riebeckite asbestos
Blue asbestos 
CAS #: 12001-28-4 RTECS #: CI6479000
UN #: 2212
EC #: 650-013-00-6
    Formula: Na2 Fe++3 Fe+++2 Si8 O22 (OH)2
Molecular mass: 765.98

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! AVOID ALL CONTACT! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN!   
Inhalation Cough.  Use local exhaust or breathing protection.   
Skin Dry skin.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. 
Eyes Redness.  Wear safety spectacles or eye protection in combination with breathing protection.   
Ingestion   Do not eat, drink, or smoke during work.   

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Personal protection: chemical protection suit including self-contained breathing apparatus. Vacuum spilled material with specialist equipment. Carefully collect remainder. Then store and dispose of according to local regulations. Do NOT let this chemical enter the environment.   
EC Classification
Symbol: T; R: 45-48/23; S: 53-45; Note: E 
UN Classification
UN Hazard Class: 9; UN Pack Group: II 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-90S2212.  Well closed. 

IMPORTANT DATA
Physical State; Appearance
FIBRES. 

Physical dangers
 

Chemical dangers
 

Occupational exposure limits
TLV: 0.1f/cc as TWA; A1 (confirmed human carcinogen); (ACGIH 2004).
MAK: Carcinogen category: 1; (DFG 2004). 

Routes of exposure
The substance can be absorbed into the body by inhalation. 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly. 

Effects of short-term exposure
The substance is irritating to the skin, respiratory tract and eyes. 

Effects of long-term or repeated exposure
Repeated or prolonged inhalation of fibres may cause effects on the lungs. This may result in fibrosis. This substance is carcinogenic to humans. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Decomposes at 1200°C
Relative density (water = 1): 3.3-3.4
Solubility in water: none 
 

NOTES
Smoking greatly enhances the risk of lung cancer.
Depending on the degree of exposure, periodic medical examination is suggested.
Do NOT take working clothes home.
The TLV value applies to fibres longer than 5µm with an aspect ratio equal to or greater than 3:1 as determined by the membrane filter method at 400-450X magnification (4-mm objective) using phase-contrast illumination. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.
    See Also:
       Toxicological Abbreviations