gum rosin ww grade, resin, pale yellow We have a long-term stable supply channels and production base, quality assurance. Gum rosin is a natural resin obtained by distillation from the liquid of sticky secretion. It's a transparent and brittle solid material. Colar from slight yellow to yellow red, a slight sheen in the surface. With incense resin odor. The quality of product in the process conforms to China national standard(GBB145-87).
Gum Rosin ww grade, resin Used in paper, ink, rubber, paints and varnish, various adhesives, glue, soap, synthetic resins.
Specification:
Item | Grade | ||
X | WW | WG | |
Appearance | Transparent | ||
Color | Slightly yellow | Pale yellow | Yellow |
Softening point(R and B)°C≥ | 76 | 76 | 74 |
Acid value, mgKOH/g≥ | 166 | 165 | 164 |
Non-saponifiable content%≤ | 5 | 5 | 6 |
Impurity content%≤ | 0.03 | 0.03 | 0.04 |
Ash content%≤ | 0.02 | 0.03 | 0.04 |
best regards,
gum rosin
