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Stearic acid (/ ˈ s t ɪər ɪ k / STEER-ik, / s t i ˈ ær ɪ k / stee-ARR-ik) is a saturated fatty acid with an 18-carbon chain. [9] The IUPAC name is octadecanoic acid. [9] It is a soft waxy solid with the formula CH 3 (CH 2) 16 CO 2 H. [9] The triglyceride derived from three molecules of stearic acid is called stearin. [9]
Magnesium stearate is often used as an anti-adherent [3] in the manufacture of medical tablets, capsules and powders. [4] In this regard, the substance is also useful because it has lubricating properties, preventing ingredients from sticking to manufacturing equipment during the compression of chemical powders into solid tablets; magnesium stearate is the most commonly used lubricant for ...
Calcium stearate is produced by heating stearic acid and calcium oxide: 2 C 17 H 35 COOH + CaO → (C 17 H 35 COO) 2 Ca + H 2 O. It is also the main component of soap scum, a white solid that forms when soap is mixed with hard water. Unlike soaps containing sodium and potassium, calcium stearate is insoluble in water and does not lather well. [2]
Manganese stearate is a metal-organic compound, a salt of manganese and stearic acid with the chemical formula C 36 H 70 MnO 4. [1] [2] The compound is classified as a metallic soap, i.e. a metal derivative of a fatty acid. [3]
As described by the Food Chemicals Codex 7th edition, SSL is a cream-colored powder or brittle solid. [1] SSL is currently manufactured by the esterification of stearic acid with lactic acid and partially neutralized with either food-grade soda ash ( sodium carbonate ) or caustic soda (concentrated sodium hydroxide ).
Common food acids include vinegar, citric acid, tartaric acid, malic acid, folic acid, fumaric acid, and lactic acid. Acidity regulators Acidity regulators are used to change or otherwise control the acidity and alkalinity of foods. Anticaking agents Anticaking agents keep powders such as milk powder from caking or sticking. Antifoaming agents
It takes the form of a white, odorless, and sweet-tasting flaky powder that is hygroscopic. Chemically it is the glycerol ester of stearic acid . It is also used as hydration powder in exercise formulas.
Ascorbyl stearate (C 24 H 42 O 7) is an ester formed from ascorbic acid and stearic acid. In addition to its use as a source of vitamin C, it is used as an antioxidant food additive in margarine (E number E305). The USDA limits its use to 0.02% individually or in conjunction with other antioxidants.