Palmitic acid CAS 57-10-3, also known as hexadecanoic acid or palmitic acid, is an organic compound with the chemical formula C16H32O2. It is a saturated higher fatty acid with a white pearlescent phosphorus flake. Insoluble in water, slightly soluble in petroleum ether, and soluble in ethanol. Easily soluble in ether, chloroform, and acetic acid. Widely present in nature, almost all oils contain varying amounts of palmitic acid components. Used as a precipitant, chemical reagent, and waterproofing agent.

Chinese name: palmitic acid

Foreign name: Palmitic acid

Nickname: hexadecanoic acid, hexadecanoic acid, palmitic acid

Chemical formula: C16H32O2

Molecular weight: 256.424

CAS login number: 57-10-3

EINECS login number: 200-312-9

Melting point: 61 to 62.5 ℃

Boiling point: 340.6 ℃

Water solubility: insoluble

Density: 0.853 g/cm ³

Appearance: White with pearly scales

Flash point: 154.1 ℃

Application: Used as a precipitant, chemical reagent, and waterproofing agent

Physical and chemical properties

Density: 0.853g/cm3

Melting point: 61-62.5 ℃

Boiling point: 340.6 ℃

Flash point: 154.1 ℃

Refractive index: 1.454

Appearance: White with pearly scales

Solubility: insoluble in water, soluble in ethanol, easily soluble in ether, chloroform, and acetic acid

Application

Used as a precipitant, chemical reagent, and waterproofing agent; Palmitic acid is used to produce odorless chloramphenicol and various metal salts of palmitic acid, and can be used as emulsifier in lotion polymerization.

The sodium salt or potassium salt of palmitic acid can be used as an emulsifier in lotion polymerization. The sodium salt of palmitic acid is one of the main components of soap. Its aluminum salt and zinc salt are used in lubricants, coatings, inks and plasticizers. In industry, palmitic acid is obtained by saponification and neutralization of animal and vegetable fats such as butter, lard, and palm oil.

In World War II, derivatives of palmitic acid were used to manufacture napalm bombs. A crystalline stearic acid product can be obtained by mixing palmitic acid and stearic acid in a ratio of 45% to 55%, which can be applied to the cosmetics industry.

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