Page 160 - Pharmacognosy-II (06-PG 303)

Constituents:
• Before distillation it contains the diterpene acids (C-20) d- and l- pimaric
acids.
• During distillation l-pimaric acid isomerises into Abietic acid about 93%.
• Inert substances (mixed resins called Resenes), esters of fatty acids.

Uses:
• Rosin consists mainly of abietic acid, and combines with caustic alkalis to
form salts (rosinates or pinates) that are known as rosin soaps.
• Diuretic in veterinary medicine.
• Ingredient in ointment For dermatitis & psoriasis.
• Ingredient in some collodion & adhesive plasters.
• Important starting material for the commercial synthesis of many
compounds ex. Camphor.

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