Chemical Additives

Chemical Name: Highly dispersive insoluble sulfur, 20% oil treated powder

CAS NO.: 9035-99-8

Product Specification:

Appearance		Yellow powder
Total quantity of sulfur,%		79.0-81.0
Insoluble sulfur (in total S),%	≥	90.0
Ash(600°C±25),%	≤	0.10
Oil content,%		19.0-21.0
Residue on sieve(150μm),%	≤	0.30
Thermal stability(in total S),%	≥	80.0
Acidity(as H2SO4),%	≤	0.05

◆    Performance:
-HD OT 20 is a polymer sulfur with high dispersibility, which is insoluble in rubber. It can prolong the scorch time of rubber compound, prevent the migration of sulfur and improve the viscosity of rubber surface;
-HD OT 20 is pollution-free and does not change the color.

◆    Application:
-HD OT 20 is generally used in unsaturated rubber formulations with high sulfur content, especially when the number of added parts exceeds the solubility of soluble sulfur;
-HD OT 20 has a low migration rate, even dispersion and a long scorch time in rubber, which can improve the adhesion between copper coated steel wire and rubber. Therefore, it is widely used in tire steel wire adhesive formulations and OTR tires;
-HD OT 20 can also be used in vulcanized rubber products with high performance requirements.

◆     Packaging: Paper/plastic packages with a net weight of 25kg per package.

◆     Transportation: Meet the general transportation conditions of chemicals and avoid mixing with alkaline substances.

9035-99-8 – 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

9035-99-8 – 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.

9035-99-8 – Risk and Safety

UN IDs	1350
Hazard Class	4.1
Packing Group	III

9035-99-8 – Reference Information

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.

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