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| Insoluble sulfur OT20,OT33 |
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| sulfur |
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| Insoluble sulfur is amorphous form of sulfur, which is made from the heat-polymerizing of sulfur, also can be obtained by reacting sulfureted hydrogen with sulfur dioxide. Insoluble sulfur is macromolecule polymer, and there are several thousand of sulfur atoms in its molecular chains. Since it doesn't dissolve in carbon disulfide, it is called insoluble sulfur or polymeric sulfur. Currently insoluble sulfur is mainly used in rubber industries. |
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Insoluble sulfur is amorphous form of sulfur, which is made from the heat-polymerizing of sulfur, also can be obtained by reacting sulfureted hydrogen with sulfur dioxide. Insoluble sulfur is macromolecule polymer, and there are several thousand of sulfur atoms in its molecular chains. Since it doesn't dissolve in carbon disulfide, it is called insoluble sulfur or polymeric sulfur. Currently insoluble sulfur is mainly used in rubber industries.
Compared with sulfur (rhombic sulfur), insoluble sulfur has following merits:
1. Insoluble sulfur exists in rubber in a dispersive state. It can prevent the booming of rubber, having a better viscosity, and at the same time can ensure the outer appearance of the products with light color.
2. Insoluble sulfur can disperse uniformly in rubber, so it can prevent the conglomeration of sulfur, and reduce the tendency of being scorched during store.
3. Insoluble sulfur can prevent the blooming of rubber during its store. It make it possible to keep rubber's characteristics uniform, overcoming the defects of bad viscosity resulted from blooming, avoiding the pollution of products as well as moulds and cut down the gelatinizing step specially appended for preventing blooming.
4. No migration in adjacent layers of rubber. The migration speed of common sulfur is very high especially in butyl rubber, and with the incorporation of insoluble sulfur, such phenomena can be avoided.
5. Shorten the vulcanization time. When reaching the temperature for vulcanization,insoluble sulfur will go through a stage of activation, that is to say, a chain de-polymerization, which can quicken the vulcanization speed, reducing the amount of sulfur used, improving the aging characteristic of products.
Therefore, due to its non-blooming characteristic, insoluble sulfur is widely used in the manufacture of radial rubber and other synthetic rubber products, also in the light-colored rubber products in which common sulfur is incorporated in high proportion.
Package
Our packaging also follows requirement by Standard No. HG/T2525-93. The wrapper is a plastic woven bag lined with plastic, with a bag thickness of 0.18-0.25mm and the inner plastic bonded in 2 layers. The knitting gauge is no more than 10mm. Net weight is usually 25kg each. We may differ according to your specific order.
Storage
Insoluble sulfur will revert to common sulfur if stored with amine or other alkaline gas in any temperature . Therefore ,never place insoluble sulfur near the product which release dissociative amine.
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