Note: Ingredients listed on restricted chemical lists
EC/CAS
142844-00-6
Name of the chemical
Zirconia Aluminosilicate Refractory Ceramic Fibres
Concentration
100%
General Information
Revision date
2026-05-05
Product name
INSWOOL-HP BLANKET 8
CAS No.
142844-00-6
1.2.1 Relevant identified uses
Refractory Ceramic Fiber (RCF) materials are used primarily in industrial high temperature insulating applications Conversion into wet and dry mixtures and articles Installation, removal (industrial and professional) / Maintenance and service life (industrial and professional)
1.2.2. Uses advised against
Spraying of dry product
Emergency telephone
1-800-424-9300
Icons in SDS
Company Information
company name
HarbisonWalker International Minerals, Inc
e-mail address of the competent person responsible for the Safety Data Sheet
SDS@thinkHWI.com
GHS Information
Signal word
Warning
Hazard Codes
Hazard statements (CLP)
H351
Hazard statements
Code
Statements
H351
Suspected of causing cancer
Section 2
SECTION 2: Hazards identification
NFPA Rating Classification of the substance or mixture d ~ GHS08 Health hazard Carcinogenicity 2 H351 Suspected of causing cancer. Route of exposure: Inhalation
2.2 Label elements
The substance is classified and labeled according to the Globally Harmonized System (GHS).
Hazard pictograms
d ~ GHS08
Hazardous Ingredients
Refractory ceramic fibers
Hazard statements
H351 Suspected of causing cancer. Route of exposure: Inhalation.
Precautionary statements
P201 Obtain special instructions before use. P202 Do not handle until all safety precautions have been read and understood. (Contd. on page 2) US (Contd. of page 1) P280 Wear protective gloves / eye protection. P281 Use respiratory protection as required; see section 8 of the Safety Data Sheet. P308+P313 IF exposed or concerned: Get medical advice/attention. P405 Store in a manner to minimize airborne dust. P501 Dispose of contents/container in accordance with local/regional/national/international regulations.
Additional information
Although this blanket is a shaped article whose functionality is partly dependent on its form, it may, under normal conditions of use, release a hazardous chemical that could pose a health risk to users through inhalation. May cause temporary mechanical irritation to exposed eyes, skin or respiratory tract. Minimize exposure to airborne dust. Additional Information on After Service Material As produced, all RCF fibers are vitreous (glassy) materials which do not contain crystalline silica. Continued exposure to elevated temperatures over time may cause these fibers to devitrify (become crystalline). The first crystalline formation (mullite) begins to occur at approximately 985° C (1805° F). Crystalline phase silica may begin to form at approximately 1100° C (2012° F). When the glass RCF fibers devitrify, they form a mixed mineral crystalline silica containing dust. The crystalline silica is trapped in grain boundaries within a matrix predominately consisting of mullite. The occurrence and extent of crystalline phase formation is dependent on the duration and temperature of exposure, fiber chemistry and/or the presence of fluxing agents or furnace contaminants. The presence of crystalline phases can be confirmed only through laboratory analysis of the "hot face" fiber. IARC’s evaluation of crystalline silica 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.” IARC also studied mixed mineral crystalline silica containing dusts such as coal dusts (containing 5–15 % crystalline silica) and diatomaceous earth without seeing any evidence of disease. (IARC Monograph Vol. 68, 1997). NTP lists all polymorphs of crystalline silica as substances which may "reasonably be anticipated to be carcinogens". IARC and NTP did not evaluate after-service RCF, which may contain various crystalline phases. However, an analysis of after-service RCF samples obtained pursuant to an exposure monitoring agreement with the EPA, found that in the furnace conditions sampled, most did not contain detectable levels of crystalline silica. Other relevant RCF studies found that (1) simulated after- service RCF showed little, or no, activity where exposure was by inhalation or by intraperitoneal injection; and (2) after-service RCF was not cytotoxic to macrophage-like cells at concentrations up to 320 micrograms/cm² - by comparison, pure quartz or cristobalite were significantly active at much lower levels (circa 20 micrograms/cm²). · Information pertaining to particular dangers for man and environment
Classification system
· NFPA ratings (scale 0 - 4) Health = 0 0 Fire = 0 0 Reactivity = 0 · HMIS-ratings (scale 0 - 4) HEALTH 0 Health = 0 FIRE 0 Fire = 0 REACTIVITY 0 Reactivity = 0
2.3 Other hazards
Mild mechanical irritation to skin, eyes and upper respiratory system may result from exposure. These effects are usually temporary. US (Contd. on page 3) (Contd. of page 2)
2.1 Classification of the substance or mixture
d ~ GHS08 Health hazard Carcinogenicity 2 H351 Suspected of causing cancer. Route of exposure: Inhalation.