MATERIAL SAFETY DATA SHEET
MSDS No: 350 Date Prepared: 03/24/1992 Current Date: 7/26/2002
Last Revised: (03/20/2002)
16. OTHER INFORMATIONSUPERWOOLTM DEVITRIFICATION
As produced, SuperwoolsTM are vitreous (glassy) AES Wools that do not contain crystalline silica. Continued exposure
to elevated temperatures (>9000C) may cause these materials to form crystalline phases, includingcrystalline silica.
The occurrence and extent of crystallinesilica 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 SuperwoolTM, containing crystalline silica, has shown no adverse reactions in toxicity assays
(See Section 11). These findings are consistent with IARC’sevaluation, 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 industrialcircumstances studied. Carcinogenicity may be dependent
on inherent characteristics of the crystalline silica or on external factors affectingits biological activity or distribution of
its polymorphs.” (IARC Monograph Vol. 68, 1997).
Respirable dust from devitrified SuperwoolTM products can be controlledwith 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 customerswith up-to-date information regarding the
proper use and handling of SuperwoolTM. If you would like more information about this program, please call your local
supplier or visit one of the following web sites.
ThermalCeramics -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 SuperwoolTM packages, checklocal destination regulations before
shipping.
HMIS HAZARDRATING
HMIS Health: 1
HMIS Flammable: 0
HMIS Reactivity: 0
HMIS Personal Protective: To be determined by user
DEFINITIONS