Black Gum Rosin

Black Gum Rosin

Black gum rosin is a lower-grade derivative of natural gum rosin, often obtained from the distillation of crude pine resin or as a byproduct of gum rosin production where oxidation, overheating, or contamination may occur.

Natural Origin

Versatile Applications

It is not a standardized commercial grade, but rather an industrial or off-spec material used in specific low-cost applications.

  • A low-grade pine resin, dark in color with lower purity.

  • Used mostly in industrial and cost-sensitive applications.

  • Not suited for food-grade, cosmetic, or pharmaceutical uses due to impurities and odor.

  • Reclaimed Rubber Production: Ideal for low-cost rubber compounds, especially in tire or shoe sole recycling.

  • Industrial Adhesives & Sealants: Used in building materials, waterproof coatings, and non-critical glue applications.

  • Low-grade Inks & Paints: Suitable for dark-colored formulations and bulk paint industries.

  • Construction & Plywood: Acts as a resin modifier or filler agent for plywood and particleboard.

  • Other Industrial Applications: Includes use in batik wax, paper sizing, and roofing materials.

  • Ideal for large-volume buyers looking to reduce raw material costs.

Black Gum Rosin Technical Data

Composition

: Primarily resin acids, which are monocarboxylic diterpene acids.

Chemical Formula

: C₂₀H₃₀O₂

Gum Rosin WW Grade Physical & Chemical Properties:

  • Color :Dark brown to black (opaque)
  • Softening Point :Lower than standard grades (approx. 70–85°C)
  • Acid Value :Typically lower, varies
  • Solubility :Soluble in alcohols, esters, turpentine
  • Form :Solid, brittle or sticky blocks
  • Odor :Strong resinous smell

Gum Rosin X Grade Physical & Chemical Properties:

  • Acid Value160–200
  • Saponification Value170–220
  • Softening Point78°C min
  • Color (Colorimeter)5.1-6.0 max
  • Volatile Oil Content2.0% max
  • Ash Content0.02% max
  • Insoluble Material Content in Toluene0.02% max

Physical Characteristics

Color

: Dark brown to black (opaque)

Softening Point

: Lower than standard grades
 (approx. 70–85°C)

Acid Value

: Typically lower, varies

Solubility

: Soluble in alcohols, esters, turpentine

Form

: Solid, brittle or sticky blocks

Odor

: Strong resinous smell

Packaging

: 20FT Dry Container

 25KG Boxes with Pallets

 Maximum 15MT/Container

Shapes Available

: Block solid form

CAS No.

: 8050-09-7

EINECS No.

: -

HS Code

: 3806.10.00

Enhance Performance with Trusted Materials

Refined for purity and reliability, our materials deliver exceptional stability and versatility. Ideal for various applications, they support innovation while maintaining superior quality.

Request a Quote

2