1. Product and Company Identification. SELF-INDICATING (BLUE) SILICA GEL. Geejay Chemicals Ltd., 16 Gosforth Close, Sandy, Beds., SG19 1RB. Telephone : 01767 682774. 2. Composition/Information On Ingredients. Synthetic amorphous silica impregnated with cobalt chloride. Formula SiO2 with CoCl2 Silica Gel - CAS No. : 7631-86-9 EINECS : 231-545-4 Cobalt Chloride ­ CAS No. : 7646-79-9 EINECS : 231-589-4 Hazardous components : Cobalt Chloride < 1% Classification symbol T Carc. Cat. 2 Risk Phrases R49 May cause cancer by inhalation Hazards Identification. The product is very adsorbent and may have a drying effect on skin and eyes. Sensitisation of skin and respiratory system is possible. Any dust could be a nuisance. Evolves heat on contact with water. Cobalt Chloride has been classified by IARC (International Agency for Research on Cancer) in Group 2B. Possibly carcinogenic to humans. Very toxic to aquatic organisms. May cause long term adverse effects in the environment. First Aid Measures. 1. After inhalation: remove to fresh air. 2. After skin contact: wash with water, if skin irritation persists seek medical advice. 3. After eye contact: flush with water, if irritation persists seek medical advice. 4. After ingestion: give water to drink, seek medical advice. Fire Fighting Measures. 1. Products of combustion: not combustible. 2. Fire fighting procedures/extinguishing media : not applicable, unused material will not burn. Use media appropriate for surrounding fire. Accidental Release Measures. 1. Personal precautions: respiratory protection if dusty, eye and hand protection. 2. Environmental precautions: try to prevent material from entering drains or watercourses. Advise authorities if spillage has entered watercourse or sewer. 3. Methods for cleaning up: sweep up or preferably vacuum up and collect in suitable container for recovery or disposal. Avoid raising dust.





7. Handling and Storage. 1. Precautions during handling: avoid raising dust, vacuum up dust sources, prevent static electric sparks. Beads may be slippery. 2. Precautions during storage: store in sealed containers in a dry place. 8. Exposure Controls/Personal Protection. 1. General Respiratory: effective dust mask. Hand: protective gloves. Eye: goggles, safety glasses. Skin: overalls 2. Exposure limits. Amorphous silica UK EH40:OES 8 hr. TWA 6mg/m3 total inhalable dust UK EH40:OES 8 hr. TWA 2.4mg/m3 respirable dust. Cobalt compounds as Co UK EH40:MEL 8 hr. TWA 0.1 mg/m3 ACGIH:TLV 8 hr. TWA 0.02 mg/m3 9. Physical and Chemical Properties. Appearance ­ blue granules or beads that turn pink on adsorption of water. Odour ­ none. pH ­ 3.5 minimum as a suspension 100g/l water. Boiling point/melting point ­ not applicable. Flammability/flash point ­ not applicable. Density ­ 700 ­ 750 kg/m3 Solubility ­ insoluble in water and solvents. 10. Stability and Reactivity. Stability ­ stable. Conditions/materials to avoid ­ evolves heat in contact with water. 11. Toxicological Information. Acute toxicity Silica, amorphous ­ oral, LD50>15,000 mg/kg, rat. - dermal LD50>5,000 mg/kg, rabbit. Cobalt chloride - oral, LD50>80 mg/kg, rat. Effects of exposure: Eyes ­ dust may cause irritation. Skin ­ heat may be evolved when in contact with water. May have a drying effect. Skin sensitisation ­ cobalt compounds are skin sensitisers. Carcinogenicity ­ amorphous silica is not classified as carcinogenic to

humans. There is limited evidence of cobalt chloride in experimental animals. 12. Ecological/Biological Information. Amorphous silica is chemically and biologically inert. It is not degradable. By its insolubility in water there is a separation at every filtration and sedimentation process. Cobalt is a List II substance in EEC Directive 76/464 for the control of dangerous substances in the aquatic environment. This product must not be allowed to contaminate soil and water. 13. Disposal Considerations. Disposal according to national and local regulations. This material is classified as special waste under the UK Special Waste regulations 1996. This material is classified as a hazardous waste under EEC Directive 91/689. Used product may have different hazards or properties from the original product. This MSDS does NOT therefore apply to spent/used products. 14. Transport Information. Not dangerous goods according to the transport regulations of UK Road, RID-ADR, IMO, MARPOL and ICAO. Not classified as dangerous goods under the United Nations Transport Regulations. No special packaging requirements. 15. Regulatory Information. As required by the Chemicals (Hazard Information and Packaging for Supply) (Amendment) (No. 2) Regulations (CHIP 99(2)) and in Approved Supply List 5th Edition. This material contains less than 1% cobalt chloride. EC Classification Carc. Cat. 2. Labelling information Symbol Toxic T Risk Phrases R49 May cause cancer by inhalation Safety phrases S22 Do not breathe dust S45 In case of accident or if you feel unwell, seek medical advice (show label where possible) S60 This material must be disposed of as hazardous waste S2 Keep out of reach of children 16. Other Information. As with any material, general industrial hygiene and housekeeping standards should be observed.

This information is given in good faith and is based on information supplied by manufacturers of the material indicated. The suitability of the product for any particular use is not suggested or implied. The data does not constitute a specification and any properties shown are not guaranteed. This latest edition (July 2000) of the Material Safety Data Sheet of SELFINDICATING (BLUE) SILICA GEL contains a number of major changes. This is due to the reclassifying of Cobalt Chloride as a hazardous material. These changes have effected Sections 2, 3, 8, 11 and 15. Date 01/07/2000.



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