Fine colloidal silica also known as precipitated silica as lightweight filler in resin castings or with silicon molding. It also function as anti caking and free flowing agent for powder materials and colors. Its unique feature with its high absorption easily turn liquid into a powder. For this it is useful for floral drying as it fine powder support and dessicant to dry delicate flowers. Use with perlite powder porosities assist in supporting and drying. Both materials can be reused with oven drying. In aroma stone mixed with plaster of Paris to absorb and retain fragrant oil. Its full potential is still yet to be discover in craft use like as a matting agent or for garden use with its high silica content, as a fine polish for plastic and metal with liquid wax and colloidal silica into polishing paste, and in glaze formulation with low iron content and high silica needed in gloss finish. Possible use in Pyrotechnics in converting flammable liquid into powder.
Specific surface area m2/g 180
Particle size um 12.0
DOA absorption ml/100g 235
Loss on drying % 7.0
Ph value 5% in water 7.0
Sieve residue 45 micron % 1.5
Silica content % 97
NH content % 1
Fe content ppm less than 400
Sulphate content % 1.5
Not known as a toxic material. Handle in accordance with good industrial hygiene and safety practice.
If there is the possibility of skin/eye contact, the indicated hand/eye/body protection should be used.
If workplace exposure limits are exceeded and/or larger amounts are released (leakage, spilling, dust) the
indicated respiratory protection should be used. Work in a well ventilated area with face mask as its dust may cause some sneezing and throat dryness.