International Chemical Safety Cards PERLITE ICSC: 1141 ICSC #    1141 CAS #     93763-70-3 RTECS # SD5254000 October 25, 1995 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Not combustible. In case of fire in the surroundings: use appropriate extinguishing media. EXPLOSION EXPOSURE  •INHALATION Avoid inhalation of fine dust and mist. Fresh air, rest.  •SKIN Protective gloves.  •EYES Safety spectacles. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting. Personal protection: P1 filter respirator for inert particles. R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 1141 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards PERLITE ICSC: 1141 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: WHITE TO GREY POWDER. PHYSICAL DANGERS: CHEMICAL DANGERS: OCCUPATIONAL EXPOSURE LIMITS: TLV: (particulate matter containing no asbestos and <1% crystalline silica) 10 mg/m³ as TWA; A4 (not classifiable as a human carcinogen); (ACGIH 2004). OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp) NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp) NIOSH IDLH: No data ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its aerosol. INHALATION RISK: Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly on spraying or when dispersed, especially if powdered. EFFECTS OF SHORT-TERM EXPOSURE: EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Melting point: >1093°C Relative density (water = 1): 2.2-2.4 (crude); 0.05-0.3 (expanded) Solubility in water: poor ENVIRONMENTAL DATA N O T E S This card applies to perlite with <1% crystalline silica. Expanded (high temperature treated) perlite is a fluffy particulate. Depending on the degree of exposure, periodic medical examination is suggested. If perlite contains more than 1% crystalline silica then see also ICSC0808 Quartz. Card has been partly updated in April 2005. See sections Occupational Exposure Limits, EU classification, Emergency Response. ADDITIONAL INFORMATION ICSC: 1141 PERLITE (C) IPCS, CEC, 1994

IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.