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Rubber Vulcanizing Agent (Insoluble Sulfur)OT20 (IS-HS-7020 highly thermal stability) Technical Specification Appearance: Yellow Powder (Non-flying) Sulphur Content (%): 80.0¦1.0 Insoluble Sulphur Content (% min.): 72 High temp. Stability (% min.) (105℃*15min): 75 Oil Content (%): 20.0¦1.0 Acid Content (As H2SO4), % max.: 0.05 Heating Loss (60℃*2h), % max.: 0.40 Ash, % max.: 0.15 Fineness(100mesh), % min.: 99.8. Application: Insoluble sulphur OT20 (IS-HS-7020) had been widely used in natural rubber and a variety of synthetic rubber. They are made with Tire and rubber products such as: Rubber Belt, Rubber Pipe and Sealants etc. They are specially used in Radial Truck Tire making. Product Standard: (Enterprise standard) Q/320206GAD03-2008. OT20 Introduction Rubber Vulcanizing Agent OT20. Insoluble Sulfur can improve the resistance to both fatigue and ageing of all kinds of rubber products. It is used as the best vulcanizing agent for rubber. And it is widely used in the manufacture of the rubber chemistry such as tire, rubber pipe, shoes, cable and wire, insulating materials, latex, and all kinds of automobile rubber parts, especially for radial tires. Advantages of Insoluble Sulfur: The rubber no need spout frost during storage time. The Insoluble Sulfur is able to keep the unanimous features of the rubber material, and prevent the pollution to rubber product and the models With Insoluble Sulfur, there will be no transferring phenomenon between rubber layers that protects the moulding stickiness of the surfaces Reduce coking while mix smelting and storage Shorten vulcanization time, reduce the dose of sulfur and improve the property of anti-aging of the product . Packing: Packing and storage: IS8510 is packed in a25 kg bag with PE lining and stored in a ventilated cool, dry place under normal conditions. Storage temperature should be less than 40f¦. Keep away from a fire heat and moisture. It cannot be stored together with amine and alkalescences, preventing blocking from stacking. Guaranteed storage is half a year.
GOST 127.1-93 "Technical sulphur. Specifications", grade 9995. Limits of the standard, not of this listing; ask the seller for the test certificate of the cargo.
| Property | Unit | Min | Max |
|---|---|---|---|
| Sulphur | % (mass) | 99.95 | |
| Ash | % (mass) | 0.03 | |
| Organic substances | % (mass) | 0.03 | |
| Acids, as sulphuric acid | % (mass) | 0.003 | |
| Mechanical impurities (paper, wood, sand) | not allowed |
GOST 127.1-93 also defines higher and lower purity grades; check which grade the seller quotes.
Source: Rosneft (Saratov Oil Refinery), quality certificate No. 3513 for grade 9995 sulphur, column 'Norm under GOST 127.1-93' (retrieved 2026-10-29).
US$ 115 – 4,356 per Metric Ton
Median US$ 350 per Metric Ton, from 13 sulphur listings that state a price. These are sellers’ asking prices, not traded prices; terms (FOB / CIF, quantity, port) differ by listing.
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Wuxi Huasheng Chemical Additives Factory lists Insoluble sulfur OT20 on Global Trade Plaza from China. The listing was added in June 2025.
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Wuxi Huasheng Chemical Additives Factory is a B2B supplier based in China, listed on Global Trade Plaza since June 2025. Use Inquire now or Chat with supplier to ask Wuxi Huasheng Chemical Additives Factory for prices, specifications and documents for Insoluble sulfur OT20.
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