Dear Sir,
We want to buy Appearance: Transparent,
brittle solid with a glassy surface; typically
pale yellow to dark brown.
Odor: Slightly pine-like or turpentine-like.
Softening Point: 70°C to 85°C (varies by
grade).
Acid Number: 150–170 mg KOH/g
(measure of carboxylic acid content).
..