insoluble sulfur
Insoluble sulfur
CAS: 9035-99-8
Molecular Formula: S
insoluble sulfur - Names and Identifiers
| Name | Insoluble sulfur |
| Synonyms | Insoluble sulfur insoluble sulfur Polymeric sulfur Sulfur, homopolymer TIANFU-CHEM -Insoluble sulfur RubbervulcanizationagentIS(OT) Polymeric Sulfur(Rubber Vulcanization Agent) |
| CAS | 9035-99-8 |
| EINECS | 618-540-6 |
| InChI | InChI=1/H2S/h1H2/q+2 |
insoluble sulfur - Physico-chemical Properties
| Molecular Formula | S |
| Molar Mass | 32.065 |
| Use | Mainly as an Advanced Accelerator and vulcanizing agent in the rubber industry are widely used in the production and manufacture of tires and other rubber composite products, such as tire carcass compound, buffer compound, white sidewall compound and tire, rubber, such as rubber tube, adhesive tape and the skeleton material in the adhesive. It can also be used in rubber products such as cables, rubber rollers, oil seals, rubber shoes, etc., and also used in light-colored rubber products with large sulfur consumption. Due to the insoluble sulfur can make the meridian, steel wire and rubber paste more firmly, effectively prevent the rubber spray Frost, improve the heat resistance and wear resistance of the tire. Therefore, insoluble sulfur is an essential raw material in tire production. |
insoluble sulfur - Risk and Safety
| UN IDs | 1350 |
| Hazard Class | 4.1 |
| Packing Group | III |
insoluble sulfur - Nature
Open Data Verified Data
non-toxic, flammable, yellow powder. Isomer of sulfur, called "type sulfur, highly polymerized form, insoluble in carbon disulfide and other solvents. U-shaped sulfur is unstable, can gradually change into cubic sulfur, room temperature in a few weeks there is a 50% change, as long as a few minutes at 80 ℃ change, to this end, the need to add a stabilizer, in order to reduce its transformation rate.
Last Update：2024-01-02 23:10:35
insoluble sulfur - Preparation Method
Open Data Verified Data
- vaporization method: sulfur vapor heated to boiling point or above is sprayed into a cooling medium containing a stabilizer at high speed to obtain amorphous sulfur containing 30% insoluble in carbon disulfide, pure insoluble sulfur with porosity can be obtained.
- melting method: sulfur is quickly cooled in a molten and superheated state, and insoluble sulfur is contained in a certain amount.
- contact method: hydrogen sulfide and sulfur dioxide react in an aqueous medium.
- the superheated steam of sulfur is suddenly cooled in carbon disulfide or water.
Last Update：2022-01-01 11:03:47
insoluble sulfur - Use
Open Data Verified Data
insoluble sulfur is mainly used in the rubber industry. When it is used as a vulcanizing agent, the surface of rubber products is not sprayed with frost, which can improve the adhesion of steel and glue, it is the best rubber vulcanizing agent, so it is widely used in the carcass compound of tires, especially in all-wire radial tires, and can also be used in the compound of rubber products such as cables, twisted sticks, rubber shoes, etc.
Last Update：2022-01-01 11:03:47
insoluble sulfur - Safety
Open Data Verified Data
insoluble sulfur is non-toxic and flammable. Attention should be paid to fire prevention, moisture prevention and heat prevention in the yard. Special fire extinguishing equipment should be provided in the warehouse, and open fire is strictly prohibited. Personnel engaged in the production, transportation, storage and processing of insoluble sulfur should use necessary protective equipment when operating. Fire can use water, sand, carbon dioxide fire extinguishing. The product is packed with plastic woven bag, lined with plastic bag, the thickness of the bag is 0.18~0.25, the volume of the bag should be greater than the outer package, the bag mouth of the inner bag double tie, the outer bag after folding with mechanical suture, needle spacing was not greater than lOmm. 25kg net weight per bag. The package shall be marked with "Flammable solids" and "Fear of moisture. During the transportation process, a canopy should be added, and the alkaline substance should not be mixed. Pay attention to fire prevention, heat prevention and moisture prevention, so as to avoid deterioration of the product. Storage of the warehouse should be dry, ventilated, cool, should pay attention to fire, moisture, heat, temperature does not exceed 45 ℃, not close to alkaline substances, to prevent pressure caking. The storage period is 1 year from the date of production.
Last Update：2022-01-01 11:03:48
insoluble sulfur - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | 1. The most important applications are as accelerators and cross-linking agents in the rubber industry; 2. In the tire industry, a large amount of accelerators and cross-linking agents are needed, which are indispensable and important additives. IS set of practical and appearance requirements in one, widely used in some rubber and structural adhesive products, such as white sidewall glue, tire, buffer compound, rubber tube, carcass compound, adhesive tape, at the same time of "no frost spray", the appearance of the semi-finished rubber product is guaranteed. 3. The application market of IS products IS very extensive, Cable shell, waterproof rubber tube, oil sealing material, raw tape, automobile inner tube, insulation protective equipment, automobile interior parts and other rubber products are the figure of IS. 4. In addition to industrial applications, the distribution of daily necessities is also very extensive. Common light-colored rubber products on the market often require a large amount of sulfur, such as rubber shoes with good water resistance, special rubber products such as seals commonly used in water and electricity construction, and household rubber products, toys, latex gloves and other high-grade rubber products. IS can improve the adhesive ability between the adhesive layers, greatly improve the quality of common rubber products, prolong the service life, compared with ordinary sulfur has many unique advantages. |
Last Update：2024-04-09 21:21:28
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CAS: 9035-99-8
Tel: 0086-551-65418684
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