Calcium silicate used as an anticaking agent in food preparation, including table salt and as an antacid. It is approved by the United Nations' FAO and WHO bodies as a safe food additive in a large variety of products. It has the E number reference E552. Calcium silicate is commonly used as a safe alternative to asbestos for high-temperature insulation materials. Industrial-grade piping and equipment insulation is often fabricated from calcium silicate. Its fabrication is a routine part of the curriculum for insulation apprentices. Calcium silicate competes in these realms against rockwool and proprietary insulation solids, such as perlite mixture and vermiculite
Electrical insulation paper insulation paper. Electrical insulation papers are made from well delignified unbleached kraft pulp. Electrical cables are categorized by the voltage and current used. Telephone cables have moderate voltage and current associated with cables leading moderate electric current or transmitting electrical signals. The telephone cables have a large number of conductors that are individually insulated. In order to not become excessively thick the paper needs to be thin (30-40 g/m). A normal power cable needs more insulation and therefore paper with higher paper density is used, normally 60-190 g/m. The paper needs to be strong, elastic, uniform and free of holes