Anticaking agent
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Anticaking Agent
A product, which when added to a powder, will assist in preventing the powder from caking or forming lumps. Many products have been used as anticaking agents, but they fall primarily into two categories: those that protect the powder from external moisture, and those that absorb moisture both internally or externally. Products that absorb water are silica gels, phosphates, etc. Products that protect the powder from external moisture by virtue of their fine particle size are phosphates, silicas, cellulosics, etc. See Silica and Silicates, Phosphates, Cellulose.3 (o) (1) (from CFR Food and Drug 27), and Chart 45.
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Anticaking agent
An anticaking agent is an additive placed in powdered or granulated materials, such as table salt, to prevent the formation of lumps and for easing packaging, transport, and consumption.
An anticaking agent in salt is denoted in the ingredients, for example, as "anti-caking agent (554)", which is sodium aluminosilicate, a man-made product. This product is present in many commercial table salts as well as dried milks, egg mixes, sugar products, and flours. In Europe, sodium ferrocyanide (535) and potassium ferrocyanide (536) are more common anticaking agents in table salt. Natural anticaking agents used in more expensive table salt include calcium carbonate and magnesium carbonate.
Some anticaking agents are soluble in water; others are soluble in alcohols or other organic solvents. They function either by adsorbing excess moisture, or by coating particles and making them water repellent. Calcium silicate (CaSiO3), a commonly used anti-caking agent, added to e.g. table salt, absorbs both water and oil.
Anticaking agents are also used in non-food items such as road salt[1], fertilisers[2], cosmetics[3], synthetic detergents[4], and in manufacturing applications.
List of anticaking agents
The following anticaking agents are listed in order by their E number.
- E341 Tricalcium Phosphate
- E460(ii) Powdered cellulose
- E500 Sodium bicarbonate
- E535 Sodium ferrocyanide
- E536 Potassium ferrocyanide
- E538 Calcium ferrocyanide
- E542 Bone phosphate
- E550 Sodium silicate
- E551 Silicon dioxide
- E552 Calcium silicate
- E553a Magnesium trisilicate
- E553b Talcum powder
- E554 Sodium aluminosilicate
- E555 Potassium aluminium silicate
- E556 Calcium aluminosilicate
- E558 Bentonite
- E559 Aluminium silicate
- E570 Stearic acid
- E900 Polydimethylsiloxane
References
- ^ "Anticaking Admixtures to Road Salt". Transportation.org. http://www.transportation.org/?siteid=55&pageid=948. Retrieved 2010-06-17.
- ^ "Fertilizer compositions containing alkylene oxide adduct anticaking agents". Google.com. http://www.google.com/patents?vid=USPAT4356020. Retrieved 2010-06-17.
- ^ "Talc Information". Cosmeticsinfo.org. http://www.cosmeticsinfo.org/HBI/26. Retrieved 2010-06-17.
- ^ "Synthetic Detergents: Introduction to Detergent Chemistry". Chemistry.co.nz. 2006-12-15. http://www.chemistry.co.nz/introduction.htm. Retrieved 2010-06-17.
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