TBPS (Di-tert-Butyl Polysulfide) activates metal oxide catalysts and converts them into their active metal sulfide form ahead of refinery hydrotreating and hydroprocessing operations. As a result, refineries around the world now rely on TBPS as one of their go-to sulfiding agents. In fact, JunYuan Petroleum Group manufactures TBPS at scale, with over 800,000 tons of annual output across our full product range, and we ship to customers in 50+ countries worldwide.
What is TBPS?
The industry sometimes calls TBPS by other names, such as DTBPS or tertiary butyl polysulfide. Either way, it remains the preferred choice for converting Ni-Mo, Co-Mo, and other metal oxide catalysts into their active sulfided state. Compared with traditional sulfiding agents, TBPS delivers a cleaner decomposition profile. Because of this, more and more refineries now favor TBPS across their hydrotreating and hydrocracking units.
- CAS No.: 68937-96-2
- Common applications: Refinery hydrotreating catalyst activation, hydrocracking unit start-up, steam cracker decoking/passivation
Technical Specifications
| Item |
Unit |
Specification |
Test Method |
| Appearance |
– |
Dark brown or tan liquid |
Visual |
| Odor |
– |
Lower odor |
Sniff inspection |
| Density @20°C |
g/cm³ |
1.09–1.18 |
GB/T 4472 |
| Solubility |
– |
Insoluble in water; dissolves in alcohol, ether, etc. |
Visual |
| Sulfur content |
% m/m |
52–56 |
GB/T 17040 |
| Flash point |
°C |
≥100 |
GB/T 3536 |
| Ash content |
% m/m |
≤0.05 |
GB/T 508 |
| Solidifying point |
°C |
≤-35 |
GB/T 510 |
| Kinematic viscosity @40°C |
mm²/S |
Report |
GB/T 265 |
| Initial thermal decomposition temperature |
°C |
125–155 |
GB/T 22052 |
In addition, every batch ships with a full Certificate of Analysis (COA), so you can confirm these specifications before the product even arrives.
Packaging: TBPS is available in ISO tank (25–26 CBM) or IBC totes, so you can choose the option that best fits your shipment size and logistics setup.
Why Choose JunYuan TBPS
First of all, JunYuan is China’s largest manufacturer of sulfiding agents, with over 800,000 tons of annual production capacity across our full solvent and specialty chemical portfolio. On top of that, we back every shipment with a COA, TDS, and MSDS, so you always know exactly what you’re getting. What’s more, we offer flexible packaging, including ISO tank (25–26 CBM) or IBC totes, to match your logistics needs. Since 2009, we have built a track record serving customers in 50+ countries, and we continue to grow that reach today.
Applications
Refineries turn to TBPS across several key stages of their operations. For instance, they use it in hydrotreating units, hydrocracking catalyst pre-sulfiding, and steam cracking or decoking operations. Because TBPS performs reliably across each of these stages, it has become a standard choice for refinery teams worldwide.
Related Products
Whether you are looking for an alternative sulfiding agent or simply want a second supply source, JunYuan also manufactures DMDS (Dimethyl Disulfide) for customers who already follow a DMDS-based sulfiding protocol.
So, whether you need TBPS pricing, technical data sheets, or support with bulk export logistics, contact JunYuan Petroleum Group today — we reply within 24 hours.