What is rosin acid? Tell you the advantages and applications

［Molecular Formula］C20H20O2

［Structural Formula］C19H29COOH

[Properties]Abietic acid is a tricyclic diterpenoid compound, which is slightly yellow to yellow-red, transparent, hard and brittle, and contains rosin. Scented flake crystals or powder. Relative density 1.067 (20℃), Softening point 72-74℃ (Global Method), Melting point 172-175℃, Boiling point 300℃ (666Pa), Flash point 216℃, Flash point 480-500℃,Refractive index 1.5453 (20℃),Glass transition temperature 30℃

Insoluble in water, slightly soluble in hot water, easily soluble in ethanol, ether, acetone, dichloroethane, carbon disulfide, benzene, gasoline, petroleum ether and turpentine It is also soluble in dilute sodium hydroxide solution.

[Quality Specifications]

Reference standards

Indicator Name Indicator

Melt temperature, ℃ ≥98

Net fat and oil content, % 35-38

Moisture, % ≤ 0.5

[Use]Used to manufacture esters such as rosin acid methyl ester, vinyl ester, glyceryl ester and used in synthetic plastics and synthetic rubber wait. It is also used in the manufacture of paints, printing inks, adhesives, leather fillers, lubricants, pesticide emulsifiers, foaming agents, etc. It is also a raw material in the pharmaceutical industry.

[Brief preparation method]Put the rosin into an aluminum pot (or copper pot), heat and melt, then drop the rosin into the water. After steam distillation, the turpentine is evaporated, and abietic acid is released at about 210°C.

[Safety and Protection]Although this product is not highly toxic, its vapor can cause symptoms such as headaches and coughs. Packed in cardboard boxes or wooden boxes lined with paper bags. Store and transport according to the regulations of flammable chemicals, store in a cool and dry place, pay attention to fire prevention.