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High Quality Chinese WW Grade Gum Rosin
Negotiable
Min.Order:1
Product Details
Chinese WW Grade Gum Rosin
Description:
Gum rosin is the transparent light yellow or transparent yellow solid. It is a kind of natural resin, mainly composed of various kinds of resin acids; it can be dissolved easily in many organic solvents, and has special chemical activity.
Specifications | ||||||
Type | Super Grade X | 1ST Grade WW | 2ND Grade WG | |||
Appearance&Color | Transparent light yellow | Transparent light yellow | ||||
Softening Point (R&B)oC | ≥76 | ≥76 | ≥76 | |||
Acid value.(mg KOH/g) | ≥166 | ≥166 | ≥165 | |||
Unsop.matter（%） | ≤5.0 | ≤5.0 | ≤5.0 | |||
Alcohol Insol.Sustance(%) | ≤0.03 | ≤0.03 | ≤0.03 | |||
Ash(%) | ≤0.02 | ≤0.02 | ≤0.02 | |||
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