In short
Ester Gum (Industrial) (CAS 8050-31-5) is a ester gum manufactured by Himalaya Terpenes Pvt. Ltd. at its ISO 9001:2015-certified plant in Mumbai, India. Industrial Grade Glyceryl Rosinate — also known as Glycerol Ester of Gum Rosin (GEGR) or Ester Gum — is a rosin polyol ester built specifically for industrial use. It is supplied in bulk in 3 grades for domestic and export orders, packaged as block form, fiber drum, 50 kg net each. Request a quote or PDS/MSDS via the contact form.
Ester Gum (Industrial)
Ester Gum (Industrial Grade) — Glycerol Ester of Gum Rosin Manufacturer & Supplier
Product Specifications
| Manufacturer | Himalaya Terpenes Pvt. Ltd. |
| Origin | Mumbai, India |
| CAS | 8050-31-5 |
| Category | Ester Gum |
| Supply Scope | Bulk & Industrial Supply, 20+ Countries |
Description
Industrial Grade Glyceryl Rosinate — also known as Glycerol Ester of Gum Rosin (GEGR) or Ester Gum — is a rosin polyol ester built specifically for industrial use. Unlike the food-grade version, it is formulated around the performance and cost demands of specialty industrial sectors.
It sees broad use across adhesives, coatings and paints. In adhesives specifically, it works as a cost-effective enhancer for hot-melt, pressure-sensitive and other adhesive types, lifting tack and formulation flexibility.
This industrial grade is also a key building block in polymer production, including EVA, acrylics, polyurethanes, SIS and SBS, where it supports favourable processing and performance behaviour.
Documents & Quote
Specifications
| HS Code | 38069000 |
| Molecular Formula | N/A |
| Molecular Weight | N/A |
| Colour | 2 to 4 |
| Softening Point | 98 to 102 |
| Acid Value | 20 max |
| Solubility | Clear |
| Package | Block Form, Fiber Drum, 50 kg net each | Block Form, Fiber Drum, 250 kg net each | Granule Form, Paper Bag, 25 kg net each, PE films inside available |
Application & Uses
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Paint & Coating Resin: Used to produce ester gum phenolic resin paints through polymerisation with vegetable oils.
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Adhesive Formulations: Improves adhesion and processability as a cost-effective enhancer in hot-melt, pressure-sensitive and other adhesive systems.
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Polymer Systems: Supports performance and compatibility across polymer formulations such as EVA, acrylics, polyurethanes, SIS and SBS.
FAQ
What is Ester Gum and what is it used for?
Ester Gum (Glyceryl Rosinate / Glycerol Ester of Gum Rosin) is a rosin-based polyol ester used as a food additive/stabiliser in the food grade, and as an adhesive tackifier or polymer/coating modifier in the industrial grades.
What are the main industrial applications of Ester Gum?
The food grade works as a beverage stabiliser and chewing gum base; the adhesives grade improves tack in hot-melt and pressure-sensitive adhesives; the industrial grade supports paint/coating resins and polymer systems like EVA, acrylics, polyurethanes, SIS and SBS.
How is Ester Gum manufactured from Gum Rosin?
It's produced by esterifying gum rosin with glycerol, yielding a polyol ester with improved oxidative stability and compatibility compared to raw rosin.
What is the difference between Ester Gum and Gum Rosin?
Gum Rosin is the raw pine resin material, while Ester Gum is its glycerol ester — a chemically modified, more stable derivative suited to food, adhesive and coating applications that raw rosin isn't well suited for.
Which industries use Ester Gum?
Food and beverage manufacturers (food grade), adhesive producers, and paint/coating and polymer manufacturers.
How does Ester Gum improve adhesion and formulation performance?
Its resin character boosts tack, compatibility and formulation flexibility in hot-melt and pressure-sensitive adhesives, and contributes desirable processing and performance characteristics in polymer and coating systems.
What grades and specifications of Ester Gum are available?
Food grade (colour 7–8, softening point 82–90°C), Adhesives grade and Industrial grade (colour 2–4, softening point 98–102°C) — all specified by colour, softening point, acid value and solubility.
What properties should buyers evaluate when selecting Ester Gum?
Colour, softening point, acid value, and solubility in benzene, matched to whether the application is food, adhesive or industrial coating/polymer use.
How should Ester Gum be stored and packaged?
Store in a cool, dry place away from moisture and direct sunlight, in tightly sealed containers; typically supplied in fiber drums, paper-plastic bags, cartons or woven bags depending on grade.
How is Ester Gum used in adhesives, coatings, inks, and other formulations?
It acts as a tackifier and modifier that improves tack, adhesion, gloss and compatibility across hot-melt/PSA adhesives, phenolic resin paints, and various polymer coating systems.
How do the Food, Adhesives and Industrial grades of Ester Gum differ?
All three are glycerol esters of rosin. The Food grade is made to food-additive purity for uses such as beverage emulsions and chewing-gum base, the Adhesives grade is optimised for tack and compatibility in pressure-sensitive and hot-melt adhesives, and the Industrial grade is a general-purpose tackifier and binder for coatings, inks and rubber where food compliance is not needed.
Who supplies Ester Gum (Industrial) in bulk?
Himalaya Terpenes Pvt. Ltd. (Mumbai, India) supplies Ester Gum (Industrial) in bulk, in drums, bags, IBCs or ISO tanks depending on the grade, for domestic and export orders. The company is an ISO 9001:2015-certified pine-chemical manufacturer operating since 1971.
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