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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]
In this context, soap is used in its formal sense, a metal salt of a fatty acid: in this case stearic acid. It is a white solid that repels water. It is a white solid that repels water. It is insoluble in polar solvents such as alcohol and ether but soluble in aromatic hydrocarbons (e.g., benzene ) and chlorinated hydrocarbons when heated.
This Wikipedia page provides a comprehensive list of boiling and freezing points for various solvents.
The idealized equation for the formation of sodium stearate from stearin (the triglyceride of stearic acid) follows: (C 18 H 35 O 2) 3 C 3 H 5 + 3 NaOH → C 3 H 5 (OH) 3 + 3 C 18 H 35 O 2 Na. Purified sodium stearate can be made by neutralizing stearic acid with sodium hydroxide. C 17 H 35 COOH+NaOH→C 17 H 35 COONa+H 2 O
Stearyl heptanoate, the ester of stearyl alcohol and heptanoic acid (enanthic acid), is found in most cosmetic eyeliners. Stearyl alcohol has also found application as an evaporation suppressing monolayer when applied to the surface of water. [2] Stearyl alcohol is prepared from stearic acid or certain fats by the process of catalytic ...
Zirconium stearate is a metal-organic compound, a salt of zirconium and stearic acid with the chemical formula C 72 H 140 ZrO 8. [1] [2] The compound is classified as a metallic soap, i.e. a metal derivative of a fatty acid. [3] [4]
Saturated (Stearic acid) Elaidic acid is the main trans unsaturated fatty acid often found in partially hydrogenated vegetable oils. [32] Oleic acid is a cis unsaturated fatty acid making up 55–80% of olive oil. [33] Stearic acid is a saturated fatty acid found in animal fats and is the intended product in full hydrogenation.
Mercury(II) stearate is a metal-organic compound, a salt of mercury and stearic acid with the chemical formula C 36 H 70 HgO 4. [2] The compound is classified as a metallic soap, i.e. a metal derivative of a fatty acid. The compound is highly toxic by inhalation, ingestion, and skin absorption. [1]