Gum Rosin
Nine commercial grades · also called colophony
Description
Gum Rosin is the solid resin left after the volatile fraction has been distilled from pine oleoresin. It is graded principally on colour, and we carry nine commercial grades so that a buyer can specify exactly the colour standard their finished product needs without paying for a paler grade than necessary.
Across adhesives, paper sizing, printing inks, rubber compounding and soap production, rosin remains one of the most widely used natural resins in industry.
Typical specification
| Parameter | Typical value |
|---|---|
| Appearance | Pale yellow to amber translucent lumps, graded by colour (WW/WG/N/X etc.) |
| Softening point (R&B) | min 74-78 °C (per grade) |
| Acid value | 160-200 mg KOH/g |
| Ash | max 0.02-0.08% |
| Toluene insolubles | max 0.02-0.10% |
| Volatile oil | 2.0-3.0% |
| HS code | 3806.10 |
Typical values for guidance. Every consignment is supplied against its own batch certificate of analysis.
Grades supplied
Grades are principally distinguished by colour standard. Softening point and acid value are supplied against the agreed specification for each grade.
| Variant | Typically supplied for |
|---|---|
| Grade K | Darker grade for general industrial use |
| Grade D | Standard industrial grade |
| Grade B | Mid colour, general purpose |
| Grade N | Widely specified general grade |
| Grade X | Pale grade for higher specification work |
| Grade WG | Window Glass, pale and bright |
| Grade WW | Water White, the palest standard grade |
| White Gum Rosin | Premium pale material |
| Yellow Colophony Rosin | Traditional yellow colophony |
Applications
- Adhesives and pressure sensitive tapes as a tackifier
- Printing ink and paint resin production
- Paper and paperboard sizing
- Rubber compounding and tyre production
- Soap and detergent production
- Feedstock for rosin esters and derivatives
Features
- Nine grades covering the full commercial colour range
- Consistent softening point within grade
- Low ash and low unsaponifiable matter
- Packed to prevent block and contamination
Supplied into
Common questions
- How is Gum Rosin packed?
- As a solid product it packs in 25 kg bags and drums, palletised for despatch.
- Can I get a sample before ordering in bulk?
- Yes. Samples are available on request. Call +91 96965 09933 or send the quick query on this page with the grade you need.
- Do you supply a certificate of analysis?
- Yes, a certificate of analysis against the agreed specification travels with every consignment.
- Where is it despatched from?
- Our works at 34 & 35, Ispat Nagar Phase 2, Kanpur, Uttar Pradesh.
- Do you export?
- Yes. Goods ship worldwide, including to the United States, Thailand, Indonesia and China, with export documentation prepared for each consignment.