INSWOOL-HP BLANKET 8

HarbisonWalker International Minerals, Inc

Revision date : 2026-05-05

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GHS08
Health risk rating 4
Safety risk rating 1
Environmental risk rating 1

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

GHS08 M004 M009

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.

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