Hydroprocessing Catalyst Sulfiding
Activates hydrodesulfurization (HDS) and hydrocracking catalysts by converting metal oxides into active metal sulfides.
Industrial Sulfiding Agent for Refinery & Petrochemical Catalyst Activation
Dimethyl disulfide (DMDS) Chemical
High-sulfur DMDS supplied as a sulfiding agent for hydroprocessing catalyst activation in refinery and petrochemical projects across Oman, Saudi Arabia, and the wider GCC region.
≥99% Purity, Up to 68 wt% Sulfur
Two-Stage Controlled Decomposition
COA, MSDS & Transport Documentation
ISO Tanks, IBCs & Drums
Trusted Across Industrial Sectors
Oil Refining
Hydroprocessing
Petrochemical
Catalyst Services
Agrochemicals
EPC & Turnaround
A Critical Sulfiding Agent for Refinery Catalyst Activation
Dimethyl disulfide (DMDS, CAS 624-92-0) is a high-sulfur organic compound used in oil refining, petrochemical processing, and industrial sulfidation across Saudi Arabia, Oman, and the wider GCC region. In hydroprocessing units, correct catalyst sulfiding determines operational stability, catalyst life, and process efficiency, because DMDS converts metal oxides into the active metal sulfides the catalyst needs before and during operation.
In GCC refining and petrochemical facilities, selecting a sulfiding agent is both a technical and a risk-sensitive decision. Activation reliability, temperature control during decomposition, sulfur efficiency, and injection stability each affect startup performance and long-term plant integrity.
OGSCM supports refinery and petrochemical operators with structured DMDS sourcing aligned to industrial specifications, documentation compliance, and regional logistics coordination across Oman and Saudi Arabia.
◎ Technical Specifications
| Property | Value |
|---|---|
| CAS Number | 624-92-0 |
| Chemical Formula | C₂H₆S₂ |
| Molecular Weight | 94.20 g/mol |
| Purity | ≥ 99% |
| Sulfur Content | Max 68 wt% |
| Boiling Point | 110°C |
| Appearance | Colorless to yellow liquid |
| Solubility | Insoluble in water; soluble in amines & ketones |
| Material Compatibility | Carbon steel & stainless steel (dry conditions) |
| Packaging | ISO tanks, IBC containers, drums |
Typical physical and chemical properties of industrial-grade DMDS are listed above. Final specifications, including purity and sulfur content, should be confirmed against the Certificate of Analysis supplied with each batch.
Industrial Applications
Refinery Startup & Turnaround
Supports controlled catalyst activation during unit startup and scheduled turnaround windows.
Coke & Carbon Monoxide Control
Stabilises activation conditions to limit unwanted coke and carbon monoxide formation in selected refining operations.
Petrochemical & Aromatics
Used in aromatic hydrocarbon processing and petrochemical transformation steps that require controlled sulfur chemistry.
Agricultural & Specialty Chemicals
Applied in pesticide production and agricultural formulations, with food-grade variants used as flavouring additives under regulated frameworks.
Liquid & Gas Phase Injection
Suitable for either liquid-phase or gas-phase injection, depending on unit design and the approved sulfiding procedure.
Performance Benefits
Engineered for Predictable Catalyst Activation
High Sulfur Efficiency
Sulfur content up to 68 wt% reduces the injection volume required compared with alternative sulfiding agents.
Controlled Decomposition
Two-stage decomposition into H₂S lowers the risk of sudden temperature excursions during sulfiding.
Operational Continuity
Volume planning aligned with turnaround schedules reduces the risk of delayed unit startup.
Compliance Support
COA, MSDS, and hazardous material transport documentation support import clearance and project approval.
Chemical Formula
C₂H₆S₂
CAS Number
624-92-0
Sulfur Content
Max 68 wt%
Primary Use
Catalyst Sulfiding Agent
Why Choose OGSCM?
Application-Driven Solutions
We match the right grade to your process needs.
Reliable Supply Chain
On-time delivery with strong regional & global logistics.
Quality You Can Trust
Strict quality control and batch consistency.
Expert Support
Technical & commercial support throughout your procurement journey.
Regional Presence
Serving industries across GCC and MENA with local expertise.
DMDS is used as a sulfiding agent to convert metal oxides into active metal sulfides, activating catalysts in hydroprocessing and hydrotreating units.
It carries up to 68 wt% sulfur, decomposes in controlled stages, and injects efficiently, which reduces the required volume and limits temperature excursions.
Industrial-grade DMDS is commonly supplied at 99% purity or higher, with sulfur content up to 68 wt%.
In ISO tanks, IBC containers, or drums, selected according to project scale and injection requirements.
Yes. It is flammable with a low flash point, toxic by inhalation, and classified as a marine pollutant. Controlled storage, ignition source isolation, and correct PPE are mandatory.
Certificate of Analysis, Material Safety Data Sheet, hazardous material transport documentation, refinery injection specification compliance, and environmental handling compliance.
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