
Gilsonite in Electrical Insulation Compounds
Gilsonite was historically used for insulating cables and is still used in some potting and insulating compounds. In…
Gilsonite as an industrial additive in rubber, adhesives, briquetting, plastics and custom blends.

Gilsonite was historically used for insulating cables and is still used in some potting and insulating compounds. In…

Fine coal, coke and carbon fines are often pressed into briquettes. A binder holds them together. Mix fines…

Gilsonite adds tack, hardness and water resistance to bituminous and some hot-melt adhesives. Dissolve gilsonite in hot bitumen…

Gilsonite has been used as a processing aid and extender in rubber. Hoses, belts, mats, seals and some…

Beyond its major markets, gilsonite is a versatile additive in many industrial products. Gilsonite combines several properties that…
| Property | Typical value | Test method |
|---|---|---|
| Appearance | Black to dark brown powder | Visual |
| Particle size | 100 – 200 mesh | Sieve |
| Softening point (R&B) | 150 – 220 °C | ASTM D36 |
| Ash content, max | 5 % | ASTM D3174 |
| Moisture, max | 1 % | ASTM D95 |
| Volatile matter | 55 – 75 % | ASTM D3175 |
| Solubility in toluene, min | 99 % | ASTM D2042 |
| Specific gravity @ 25°C | 1.04 – 1.10 | ASTM D70 |
| Typical dosage | Drilling 2–8 lb/bbl · asphalt 4–12 % of binder · foundry 0.3–1.0 % | |
| Packing | 25 kg multi-wall paper or PP bags, palletized and stretch-wrapped; 1 MT jumbo bags. | |
Typical values. The final specification is confirmed in the COA of each shipment.
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