International Chemical Safety Cards DIATOMACEOUS EARTH (UNCALCINED) ICSC: 0248 DIATOMACEOUS EARTH (UNCALCINED) Amorphous diatomaceous earth Diatomite, uncalcined Diatomaceous earth, natural SiO2 Molecular mass: 60.8 CAS # 61790-53-2 RTECS # HL8600000 ICSC # 0248 TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Not combustible. In case of fire in the surroundings: all extinguishing agents allowed. EXPLOSION   EXPOSURE PREVENT DISPERSION OF DUST! INHALATION Cough. Local exhaust or breathing protection. Fresh air, rest. Refer for medical attention. SKIN Dry skin. Roughness. Protective gloves. Rinse and then wash skin with water and soap. EYES Redness. Pain. Safety goggles. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor. INGESTION Do not eat, drink, or smoke during work. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into containers. Wash away remainder with plenty of water (extra personal protection: P1 filter respirator for inert particles). SEE IMPORTANT INFORMATION ON BACK ICSC: 0248 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards DIATOMACEOUS EARTH (UNCALCINED) ICSC: 0248 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: ODOURLESS, FINE AMORPHOUS POWDER. PHYSICAL DANGERS: Heating the material at high temperatures results in the formation of crystalline silica (see ICSC 0807, Silica, crystalline-Cristobalite). CHEMICAL DANGERS: OCCUPATIONAL EXPOSURE LIMITS (OELs): TLV: ppm; 10 mg/m3 as TWA (ACGIH 1993-1994). ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation. INHALATION RISK: Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly. EFFECTS OF SHORT-TERM EXPOSURE: EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The substance may have effects on the lungs , resulting in mild fibrosis (see Notes). PHYSICAL PROPERTIES Boiling point: >2200°C Relative density (water = 1): 2.3 Solubility in water: none

ENVIRONMENTAL DATA
NOTES
Literature suggests that the fibrosis may be due to crystalline contaminants. Depending on the degree of exposure, periodic medical examination is indicated. Do NOT take working clothes home.

ADDITIONAL INFORMATION
ICSC: 0248 DIATOMACEOUS EARTH (UNCALCINED) © IPCS, CEC, 1993

IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of 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.