... , (%) ,max556Ash, (%) ,max0.020.030.042. Properties and uses: It is a kind of natural resin, mainly composed of various kinds ... organic solvents, and has special chemical activity. So it is an important raw material for the production of paper, coatings, inks, rubber ... 4. Technical specification: The above technical specification (GB 8145-87) is the national standard of People's Republic of China. If ...