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Specifications

Gum rosin 
1)Natural rosin made of pine trees 
2)Softening point: 76.1, acid number: 169.5 
3)Good quality with competitive price 
4)CAS No.: 8050-09-7 
5)ISO9001 manufacturer in China 

Gum Rosin 
Synonyms: Colophony, Rosin 
Gum rosin also called colophony, 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. 

Application: 
Chemical material for Paper Production, Soap, Ink, Paints, Adhesives, Ruber, Synthetic Resin, Electric Insulation material, and Organic Synthesis 

Packing: 25 kgs in kraft paper bags or 225 kgs in drums, 20/18MT/20'container
Parameter Grade

Standard: GB/T8145-8146-2003
X WW WG

APPEARANCE
Transparent Transparent Transparent

COLOR
Light Yellow Pale Yellow Yellow

SOFTENING POINT(R&B)°C
76.0 76.0 75.0

ACID NUMBER(mg KOH / g)≥
166.0 166.0 165.0

UNSAPONIFIABLE MATTER % ≤
5.0 5.0 5.0

ETHANOL INSOLUBLES % ≤
0.030 0.030 0.030

ASH CONTENT % ≤
0.020 0.020 0.030