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MATERIAL SAFETY DATA SHEET
MSDS No: 350 Date Prepared: 03/24/1992 Current Date: 7/26/2002
Last Revised: (03/20/2002)
16. OTHER INFORMATION
SUPERWOOL
TM
DEVITRIFICATION
As produced, Superwools
TM
are vitreous (glassy) AES Wools that do not contain crystalline silica. Continued exposure
to elevated temperatures (>900
0
C) may cause these materials to form crystalline phases, including crystalline silica.
The occurrence and extent of crystalline silica formation is dependent on the duration and temperature of exposure,
CMS Wool chemistry and/or the presence of fluxing agents. The presence of crystalline silica can be confirmed only
through laboratory analysis of the "hot face" fiber. If crystalline silica is present, follow appropriate hygiene standards
and national regulations.
Devitrified, after-service Superwool
TM
, containing crystalline silica, has shown no adverse reactions in toxicity assays
(See Section 11). These findings are consistent with IARC’s evaluation, which states “Crystalline silica inhaled in the
form of quartz or cristobalite from occupational sources is carcinogenic to humans (Group 1)” and additionally notes
“carcinogenicity in humans was not detected in all industrial circumstances studied. Carcinogenicity may be dependent
on inherent characteristics of the crystalline silica or on external factors affecting its biological activity or distribution of
its polymorphs.” (IARC Monograph Vol. 68, 1997).
Respirable dust from devitrified Superwool
TM
products can be controlled with ventilation, dust collectors or respiratory
protection as detailed in Section 8 (above). Ventilation and respiratory protection should be provided in compliance with
OSHA standards. The evaluation of workplace hazards and, if necessary, the identification of appropriate respiratory
protection is best performed by qualified Industrial Hygienists.
For more information, call the Thermal Ceramics Product Stewardship Hotline (800-722-5681).
PRODUCT STEWARDSHIP PROGRAM
Morgan Thermal Ceramics has established a program to provide customers with up-to-date information regarding the
proper use and handling of Superwool
TM
. If you would like more information about this program, please call your local
supplier or visit one of the following web sites.
Thermal Ceramics - Global www.thermalceramics.com
Refractory Ceramic Fibers Coalition (USA) www.RCFC.net
ECFIA (Europe) www.ecfia.org
LABELING
As product information labels may be required on Superwool
TM
packages, check local destination regulations before
shipping.
HMIS HAZARD RATING
HMIS Health: 1
HMIS Flammable: 0
HMIS Reactivity: 0
HMIS Personal Protective: To be determined by user
DEFINITIONS
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