Description
Di-tert-Butyl Polysulfide (DTBPS) is a high-performance sulfiding agent widely used in refinery operations for catalyst pre-sulfiding and activation. It provides controlled sulfur release at lower temperatures, ensuring safe and efficient hydroprocessing while minimizing odor compared to conventional sulfiding agents. DTBPS is compatible with both fresh and regenerated catalysts, making it a reliable solution for hydrodesulfurization (HDS), hydrodenitrogenation (HDN), and hydrocracking pre-sulfiding processes.
Technical Specifications for Di-tert-butyl Polysulfide (DTBPS)
| Item |
Quality Indicator |
Test Method |
| Flash Point (Open Cup), °C |
≥100 |
GB/T 3536 |
| Appearance |
Dark brown or brownish liquid |
Visual inspection |
| Odor |
Pungent odor |
Olfactory assessment |
| Solubility |
Insoluble in water; miscible with alcohols, ethers, etc. |
Visual inspection |
| Density (20°C), g/cm³ |
1.09–1.18 |
GB/T 4472 |
| Sulfur Content, % |
52–56 |
GB/T 387 |
| Viscosity (40°C), mm²/s |
125–150 |
GB/T 22025 |
| Ash Content, % |
≤0.04 |
GB/T 508 |
| Kinematic Viscosity (40°C), mm²/s |
125–150 |
GB/T 265 |
Note: When injecting the sample into a 100mL glass graduated cylinder and sealing it, observe whether the liquid appears dark brown or brownish.
Applications:
This sulfiding agent is designed for pre-sulfiding refinery catalysts, helping to protect catalysts during startup and maintain optimal activity throughout hydroprocessing operations. It delivers sulfur gradually, minimizing methane formation and enhancing unit safety. Refinery operators use DTBPS to ensure consistent catalyst performance in HDS, HDN, and hydrocracking applications.
Packaging and Logistics:
DTBPS is available in IBC totes and ISO tanks, providing convenient bulk storage and transport for both domestic and international shipments. Each container is carefully filled, sealed, and inspected at the factory to guarantee safe handling and delivery. The flexible packaging options meet the needs of small and large-scale refinery operations.
Related Products and Resources:
Explore our full range of sulfiding solutions including TBPS and DMDS for complete refinery support. For detailed chemical properties and safety information, visit PubChem DTBPS.