International Chemical Safety Cards CALCIUM SILICATE (non-fibrous, <1% crystalline silica) ICSC: 1401 Calcium silicate Calcium silicate synthetic CaO•SiO2 Molecular mass: 116.1 ICSC #    1401 CAS #     1344-95-2 RTECS # VV9150000 October 17, 2001 Peer reviewe 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 PREVENT DISPERSION OF DUST!  •INHALATION Cough. Sore throat. Local exhaust.  •SKIN Protective gloves.  •EYES Redness. Pain. 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 containers. Wash away remainder with plenty of water. Personal protection: P2 filter respirator for harmful particles. R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 1401 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 CALCIUM SILICATE (non-fibrous, <1% crystalline silica) ICSC: 1401 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: WHITE 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). MAK not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation. INHALATION RISK: A nuisance-causing concentration of airborne particles can be reached quickly when dispersed. EFFECTS OF SHORT-TERM EXPOSURE: May cause mechanical irritation tothe eyesandthe respiratory tract. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Melting point: 1540°C Density: 2 g/cm3 Solubility in water: poor ENVIRONMENTAL DATA N O T E S Card has been partly updated in April 2005. See section Occupational Exposure Limits. ADDITIONAL INFORMATION ICSC: 1401 CALCIUM SILICATE (non-fibrous, <1% crystalline silica) (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.