The rosin, also called Rosin or Greek pitch
(Latin: pix græca), is the solid residue of the resin obtained from pines and other plants, mostly conifers, produced after heating to vaporize the volatile terpene components (turpentine).
The term "rosin" "resin from Colophon", an ancient Ionian city.
Rosin is mainly produced in China and Southeast Asian countries; it consists of about 90% of resin acids and 10% of neutral matter. About 90% of the resin acids are abietic acid (C20H30O2), the remaining 10% is a mixture of dihydroabietic acid (C20H32O2) and dehydroabietic acid (C20H28O2). It appears as a transparent resinous mass, with a color ranging from pale yellow to dark amber, with translucent fragments and fragile at room temperature. It has a mild turpentine taste and smell. Easily melts when heated. It is insoluble in water but is easily soluble in ethanol, ether, acetone, chloroform, turpentine essence, acetic acid, benzene, alkaline solutions and in general in organic solvents.
INDEX number 650-015-00-7
EC number 232-475-7
CAS number8050-09-7
Registration number 01-2119480418-XXX
Assay: 92.00 to 100.00
Food Chemicals Codex Listed: No
Boiling Point: 671.00 to 672.00 ° C. @ 760.00 mm Hg (east)
Flash Point: 604.00 ° F. TCC (317.60 ° C.) (East)
logP (o / w): 13.110 (east)
Soluble in:
water, 0.0896 mg / L @ 25 ° C (est) density: 1.04 ÷ 1.10 g / cm³
acid number:> 150
softening point: 70 ° C ÷ 80 ° C
dropping point: 80 - 95 ° C
melting point: 60 - 135 ° C
ash: <0.031%
saponification: 170 - 185
unsaponifiable: 3 - 8%
ASK FOR PRICES AND AVAILABILITY
Share by: