Rosin, also called colophony or Greek pitch (Pix græca), is a solid form of resin obtained from pines and some other plants, mostly conifers, produced by heating fresh liquid resin to vaporize the volatile liquid terpene components.

It is semi-transparent and varies in color from yellow to black. At room temperature rosin is brittle, but it melts at stove-top temperatures. It chiefly consists of different resin acids, especially abietic acid.

Rosin is an ingredient in printing inks, photocopying and laser printing paper, varnishes, adhesives (glues), soap, paper sizing, soda, soldering fluxes, and sealing wax.

Specification

Colour : pale yellow (Grade WW)

Softening point           : 75 deg.C min

Ash content     : 0.02% max

Acid value MgKOH/g            : 166 min

Unsaponifiable materials         : 5% max

Alcohol Insoluble materials    : 0.03% max

Packing: in new galvanised     iron sheet drums

N.WT  : 225 kgs / drum

G.WT  : 229 kgs / drum  100 drums to be put in one 20’FCL

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