Calcium Fluoride Product Stewardship Summary September 2008

CaF2

Chemical Name: Calcium fluoride Chemical Category (if applicable): Halide Synonyms: Calcium difluoride; Fluorspar; Natural fluorite; Acid - spar CAS Number: 7789-75-5 CAS Name: Calcium fluoride EC (EINECS) Number: 232-188-7 Other identifier (Please specify): GPS0016 V1.0

• Calcium fluoride (CaF2) is the essential source of fluoride in production of hydrogen fluoride and calcium sulfate. CaF2(s) + H2SO4(l) → CaSO4(solid) + 2 HF(g) CaF2 is also used in metal hardening applications and in the production of high-purity fluorophosphate glass.

• CaF2, or fluorspar, is an abundant naturally-occurring mineral. Dust is likely to be created during mining or production processes using CaF2, but worker exposure can be controlled with the use of proper general mechanical ventilation and personal protective equipment. Workplace exposure limits for fluoride ion have been established for use in worksite safety programs. CaF2 dusts released to the atmosphere and deposited in soil or surface water in the vicinity of mining or production sites have negligible impact on the environment. Please see the MSDS for additional information.

• CaF2 is a nonflammable solid that is stable under normal conditions.

• CaF2 is practically non-toxic to humans because of its insolubility and low ionization properties.

• Chronic exposure to CaF2 dusts may increase the risk of fluorosis, a condition causing pain and damage to bones and joints.

• The cancer risk for CaF2 is low.

• CaF2 is an abundant naturally occurring compound with negligible effect on the environment. CaF2 does not bioaccumulate, but under conditions where CaF2 is reduced to fluoride, bioaccumulation of fluoride causes mottling of teeth and skeletal fluorosis.

• Please contact us for more information. Additional information may also be found at the following links:

OECD Integrated HPV Database

This product stewardship summary is intended to give general information about the chemical or categories of chemicals addressed. It is not intended to provide an in-depth discussion of all health and safety information. Additional information on the chemical is available through the applicable Material Safety Data Sheet which should be consulted before use of the chemical. The product stewardship summary does not supplant or replace required regulatory and/or legal communication documents. Statements concerning use of our products are made without warranty that any such use is free of patent infringement and are not recommendations to infringe any patent. European Chemical Substances Information System International Programme on Chemical Safety (IPCS)

Version 1.0 Current Issue Date: September 2008 Document Number: GPS0016 Page 2 of 2