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Crotonic acid has 4 carbons, is included in croton oil, and is a trans-2-mono-unsaturated fatty acid. C 3 H 5 CO 2 H, IUPAC organization name (E)-but-2-enoic acid, trans-but-2-enoic acid, numerical representation 4:1, n-1, molecular weight 86.09, melting point 72–74 °C, boiling point 180–181 °C, specific gravity 1.027. CAS registry number ...
A further byproduct called tall oil fatty acid (TOFA) is a cheap source of oleic acid. [219] Tamanu or foraha oil [220] from the Calophyllum tacamahaca, is important in Polynesian culture, and, although very expensive, [220] is used for skin care. [221] Tonka bean oil (Cumaru oil), popular ingredient in cologne, used medicinally in Brazil. [222]
The dielectric constant of mineral oil ranges from 2.3 at 50 °C (122 °F) to 2.1 at 200 °C (392 °F). [22] Electric space heaters sometimes use mineral oil as a heat transfer oil . Lubricants used for older refrigerator and air conditioning compressors are based on mineral oil, especially those using R-22 refrigerant .
For example, the melting and freezing points of mercury is 234.32 kelvins (−38.83 °C; −37.89 °F). [2] However, certain substances possess differing solid-liquid transition temperatures. For example, agar melts at 85 °C (185 °F; 358 K) and solidifies from 31 °C (88 °F; 304 K); such direction dependence is known as hysteresis.
Methyl salicylate (oil of wintergreen or wintergreen oil) is an organic compound with the formula C 8 H 8 O 3.It is the methyl ester of salicylic acid.It is a colorless, viscous liquid with a sweet, fruity odor reminiscent of root beer (in which it is used as a flavoring), [4] but often associatively called "minty", as it is an ingredient in mint candies. [5]
Melting ice cubes illustrate the process of fusion. Melting, or fusion, is a physical process that results in the phase transition of a substance from a solid to a liquid. This occurs when the internal energy of the solid increases, typically by the application of heat or pressure, which increases the substance's temperature to the melting point.
Coconut oil is a white solid fat below around 25 °C (77 °F), and a clear thin liquid oil at higher temperatures. Unrefined varieties have a distinct coconut aroma. [2] Coconut oil is used as a food oil, and in industrial applications for cosmetics and detergent production. [1] [2] The oil is rich in medium-chain fatty acids. [3]
The clear cut definition of light and heavy crude varies because the classification is based more on practical grounds than theoretical. The New York Mercantile Exchange (NYMEX) defines light crude oil for domestic U.S. oil as having an API gravity between 37° API (840 kg/m 3) and 42° API (816 kg/m 3), while it defines light crude oil for non-U.S. oil as being between 32° API (865 kg/m 3 ...