Category TBPS

Dimethyl Disulfide (DMDS): Catalyst Sulfiding and Advantages

Dimethyl Disulfide (DMDS): Catalyst Sulfiding and Advantages

DTBPS chemical structure

What is DTBPS?

Di-tert-butyl Polysulfide (DTBPS)

DTBPS

Di-tert-butyl Polysulfide (DTBPS) is a specialized chemical compound primarily composed of tetra and penta sulfides. Unlike distilled materials, DTBPS boasts the highest sulfur content among manufactured polysulfides. It plays a crucial role in hydrotreating catalysts used in various industrial processes.

Common Namedi-tert-butyl polysulfide
CAS Number68937-96-2Molecular Weight188.20100
Density0.931g/cm3Boiling Point249.4ºC at 760 mmHg
Molecular FormulaC7H8O4SMelting PointN/A
MSDSN/AFlash Point85ºC (closedºCup)

Chemical & Physical Properties

Density0.931g/cm3
Boiling Point249.4ºC at 760 mmHg
Molecular FormulaC7H8O4S
Molecular Weight188.20100
Flash Point85ºC (closedºCup)
Exact Mass188.01400
PSA71.98000
LogP2.25740
Index of Refraction1.492

Properties and Applications

  • Composition: DTBPS is a blend primarily composed of tetra and penta sulfides.
  • Sulfur Content: It contains the highest sulfur content among manufactured polysulfides.
  • Usage: DTBPS finds application in the metalworking lubricant markets where it contributes to improving lubricity, reducing friction, and enhancing machining processes.

Other Polysulfides

In addition to DTBPS, other available polysulfides include:

  1. TNPS 537
  2. TDPS 532
  3. TDPS 320

While DTBPS is not directly related to Disinfection Byproducts (DBPs), it serves as a critical component in industrial catalysts. If you have any further questions or need more information, feel free to contact us! 🌟

dtbps di-tert-butyl polysulfide chemical structure

DTBPS – Safe and environmentally friendly vulcanizing agent is now on the market

Recently, Junyuan Petroleum Group has developed DTBPS (Di-tert-butyl Polysulfide) environmentally friendly and safe vulcanizing agent, which has the characteristics of no odor, low odor, high flash point, strong safety performance, and significant intrinsic safety characteristics. It has become an ideal green and reliable substitute for traditional dimethyl disulfide (DMDS) vulcanizing agent products.

It is understood that dimethyl disulfide is widely used as a pre sulfurization catalyst, sulfur injection for sulfur supplementation, and coking inhibitor for ethylene cracking in industry. Due to its good oil solubility and high sulfur content, it is widely used. However, it has strong irritancy, suffocating odor, toxicity, high risk factor, and high cost, which brings enormous pressure to the hydrogenation industry.

Based on this, Junyuan Petroleum Group has developed DTBPS (Di-tert-butyl Polysulfide) environmentally friendly and safe vulcanizing agent through collaborative innovation between industry, academia, and research. The flash point of this vulcanizing agent is over 100 ℃, which belongs to non flammable materials and greatly reduces potential production, transportation, and storage risks. Moreover, the decomposition temperature is low, and it can be injected into the system at around 160 ℃ to participate in the vulcanization reaction, increasing the activity of the catalyst and shortening the vulcanization time.

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