What is Sebacic Acid? What role does sebacic acid play in plasticizers?

[alias]Sebacic acid, octane dicarboxylic acid, suberic acid.

[Molecular formula]C10H18O4

[Structural formula]HOOC(CH2)8COOH

［Properties］Sebacic acid is white scale-like or needle-like crystals, with a relative density of 1.207 (25°C) and a melting point of 134.5°C , boiling point 294.5°C (13.3kPa), refractive index 1.422 (133.3°C). The decarboxylation temperature is 350-370°C. It can sublimate when heated to the melting point. The industrial product is a white powder with a slight fatty acid smell. Slightly soluble in water, easily soluble in organic solvents such as ethanol and ether. Because it contains two carboxyl groups, it can produce two series of salts, esters, amides and other natural products. Exist in castor oil middle.

［Application］Organic synthesis raw material for the synthesis of diethyl sebacate, dibutyl sebacate, sebacic acid Dinonyl ester, dioctyl sebacate, glyceryl sebacate and other ester plasticizers. Also used in the manufacture of nylon-610 and nylon-9 fibers. It is also an intermediate for the manufacture of polyamide, polyester, polyurethane and other polymers. It is also used in the manufacture of high-temperature lubricants, surfactants, epoxy resin curing agents, artificial flavors and cosmetics, etc. It can also be used as a powder coating crosslinking agent, polyethylene modifier, etc.

[Brief recipe]

①Castor oil is hydrolyzed with alkali to produce sodium ricinoleate soap, acidified with sulfuric acid to produce ricinoleic acid, then cresol and alkali are added to produce disodium sebacate , After acid neutralization, sebacic acid monosodium salt can be obtained, and sebacic acid can be obtained by acid analysis such as sulfuric acid.

②It is produced by fermentation of n-decane in petroleum.

[Safety and Protection]Packed in woven bags lined with plastic bags, each bag has a net weight of 25kg, 40kg, 45kg or 50kg. Store and transport according to the regulations of flammable goods, store in a cool and dry place.

This product is of low toxicity, but inhalation of dust can irritate the respiratory system.