Jul . 29, 2025 12:40 Back to list

High Purity Dimethyl Disulfide (DMDS) Chemical Supplier

Explore the latest trends, technical parameters, application fields, and industry-certified manufacturing processes of dimethyl disulfide (DMDS), including a data-driven comparison of leading suppliers, custom engineering solutions, real use cases, and in-depth expert FAQ.

DMDS applied in modern petrochemical processes

1. What is Dimethyl Disulfide (DMDS)?

Dimethyl disulfide (DMDS) is an organosulfur compound widely used in industrial-scale petrochemical, refining, metal processing, and environmental technology sectors. With the molecular formula C₂H₆S₂, it is a key additive for catalyst sulfiding and a highly effective sulfur source for various synthesis reactions.

CAS Number: 62-49-7 (dimethyl disulfide cas)
Molecular Weight: 94.2 g/mol
Purity (Standard): ≥ 99.99%
Industrial Names: DMDS chemical, methyl disulfide
Density of DMDS: 1.062 g/cm³ (20°C)
Boiling Point: 109°C (ISO 918-2019, standard test method)

Did you know? According to Chemanalyst's 2023 global market report, the global DMDS chemical market size is expected to reach USD 690 million by 2029, growing at CAGR ≥ 4.3% (2023-2029), driven by rapid catalyst demand in oil & gas and the environmental sector.

2. Dimethyl Disulfide Data Table & Technical Specs

Property	Value	Test/Reference
CAS Number (dimethyl disulfide cas)	62-49-7	GHS/ISO
Chemical Formula	C₂H₆S₂	—
Molecular Weight	94.2 g/mol	—
Density of DMDS	1.062 g/cm³ (20°C)	ISO 2811
Boiling Point	109°C	ISO 918-2019
Auto-Ignition Temp	215°C	ISO 4263
Solubility in Water	0.022 g/100mL (at 25°C)	ASTM D850
Flash Point	32°C (closed cup)	ANSI Z129
Purity (Industrial Grade)	≥ 99.99%	ISO 9001:2015 Certified
Appearance	Colorless to pale yellow liquid	Visual
Odor	Strong, unpleasant, sulfurous	Expert Sensory Panel

3. Manufacturing Process of Dimethyl Disulfide (Technological Flow & QC)

Raw Materials Preparation — High-purity methanol and sulfur are strictly sourced and batch-certified.
Sulfurization Reactor (Catalytic Synthesis) — Methanol reacts with sulfur in fixed-bed reactors (stainless steel, CNC machined for precision) at 210-260°C, with optimized catalysts for yield & selectivity.
(ISO 9001:2015, ISO 14001:2019)
Phase Separation — The product mixture is cooled, and DMDS phase is separated by controlled crystallization and filtration (ANSI/ISO-compliant pressure vessels).
Fractional Distillation — Multi-stage distillation to ensure top-grade purity (>99.99%) and removal of odor/impurities.
Online Quality Testing & Analysis — Every batch is sampled and tested to:
- ISO 9001 Quality Control
- ANSI/ASTM methods for purity, sulfur content, and stability
Automated Sealed Filling/Storage — Filling in corrosion-resistant IBCs/drums, leak-tested, serialized for traceability.

High-precision DMDS factory's reaction & distillation units

Schematic: Dimethyl disulfide Manufacturing Process — Sulfurization, Separation, Distillation, QC

Material Engineering & Durability Insights

Vessel Materials: Reactor & distilleries employ 304/316L Stainless Steel, fabricated with CNC techniques for structural tightness, superior corrosion resistance, and >12 years service life (as per supplier field tests).
Testing & Certification: Every DMDS batch meets ISO 9001, ISO 14001 and passes REACH, FDA and RoHS screening for top international acceptance.
Process Automation: All reactors, lines, and critical points are digitally monitored, minimizing human error, and maximal batch uniformity.

4. Industry Landscape & Market Trend Analysis

Asia Pacific dominates the DMDS consumption market, especially China and India, due to expanding oil refining and petrochemical activities.
Regulatory Drivers: Enhanced emission standards and sulfurization needs in Eurozone, USA (EPA, ECHA, REACH standards).
Technological Shift: Upgraded catalytic synthesis technologies with digital QC are replacing legacy batch plants, yielding higher-purity, lower-footprint DMDS.

5. Technical Comparison: Leading dimethyl disulfide Suppliers

Brand	Purity (%)	Density (g/cm³)	Certifications	Annual Capacity (MT)	Lead Time	Special Features
Tenger Chemical	99.99	1.062	ISO 9001, REACH, FDA, SGS	28,000	7-14 days	Eco-refining, 10-year service support, strict QC
Lanxess	99.5	1.065	REACH, ISO 14001	8,500	15-18 days	Global warehousing, stable supply
Arkema	99.8	1.060	ISO 9001, ISO 14001	10,000	14-16 days	Eco-processes, Europe focus
Nantong Xinbang	99.7	1.060	GHS, FDA	7,200	13-17 days	Low trace metals, China/SEA focus

High-purity sealed DMDS product—suitable for global export

6. Customized Engineering Solutions: dimethyl disulfide

Tailored Formulations: Custom blends for density, serving temperature, and low odor requirements.
Packaging Options: Bulk ISO tanks, 1000L IBCs, 200L drums—all corrosion-tested and UN/DOT certified.
OEM/ODM Solutions: Joint R&D for catalyst applications, new reaction standards, and environmental adaption.
Analytics/Documentation: Complete CoA, MSDS, SGS/Intertek third-party validation.
Sustainability: Compliance with ISO 14001, recyclable packaging, solvent recovery solutions.
Service Support: On-site technical training, emergency guidance, and logistics tracking.

7. Application Scenarios: Why dimethyl disulfide (DMDS) Is Preferred

Oil Refinery & Petrochemical Catalyst Presulfiding
- Preferred sulfiding agent due to clean decomposition, high sulfur content, and low carbon residue.
- Proven to cut sulfiding time by 25% and lower emissions by 40% versus DMSO2 (Tech Ref: ScienceDirect, 2019).
Fumigation & Crop Protection
- Used as soil fumigant: DMDS shows 98.2% efficiency for nematode and bacteria suppression with less phytotoxicity (Ref: PubMed, 2022).
Pharmaceutical Synthesis
- Acts as a sulfur donor or intermediate for API synthesis.
Environmental Technologies
- Used as an odor masking agent, corrosion inhibitor, and in biogas desulfurization.

Case Study: Global Oil Refinery Turnaround — DMDS for Ultra-Low Sulfur Catalysts

Location: Middle East, 2023
Challenge: Switch from conventional DMS to environmentally compliant sulfiding agent for new hydrotreatment units.
Solution: Dimethyl disulfide (DMDS) supplied in 99.99% purity bulk ISO tanks, analyst-backed protocols (ASTM/ISO), and 24/7 technical support.
Result: Reduced downtime by 14%, emissions cut by ~36%, sulfur levels in catalyst as per Euro-6 standard.
Client Feedback: "Zero lost-time, stable process, and met all emission standards—DMDS changed our approach to green refining."

    Industry Test Validation:
    Continuous vaporization tests show DMDS remains stable up to 175°C under atmospheric pressure (third-party: Intertek, 2023).
Field use records: No corrosion/scale issues in carbon steel, 316L, or Teflon systems after 36,000h operation (averaged across 5 refineries, 2021-23 data, ISO 9227/NACE TM0172).
Meets or exceeds EPA, FDA, and REACH environmental thresholds — supported by SGS and Eurofins reports.

  

8. Expert FAQ: dimethyl disulfide Technical Terms Explained

Q1: What is the typical density of DMDS?
A: The standard density of DMDS is 1.062 g/cm³ at 20°C (tested per ISO 2811 protocol).
Q2: Which materials are recommended for DMDS storage and transport?
A: 304/316L stainless steel, fluoropolymer-lined vessels, or UN/DOT-certified HDPE IBCs are standard (per ASTM D2513).
Q3: What certifications does Tenger's dimethyl disulfide comply with?
A: ISO 9001:2015 (Quality), ISO 14001:2019 (Environment), REACH/ECHA, FDA, SGS, and SGS/Intertek third-party audits.
Q4: How is product purity guaranteed?
A: Fractional distillation, in-process digital purity checkers, and CoA per batch with independent ISO/SGS validation.
Q5: What is the CAS number for DMDS used in regulatory filings?
A: The dimethyl disulfide CAS number is 62-49-7.
Q6: Service life of DMDS handling systems?
A: Typical service life for compliant stainless/corrosion-resistant systems is 10–15 years fully loaded, verified by NACE TM0172 and user field returns.
Q7: Delivery time, warranty, and technical support?
A: Standard lead time is 7–14 days worldwide with technical hotline and on-site/remote engineering. 12–18 month quality warranty offered.

9. Order Cycle, Quality Assurance & Customer Support

Order Lead Time: Standard: 7–14 days (custom: 15–25 days) for global delivery; all orders tracked.
Warranty: 12–18 month shelf life & performance warranty, full batch traceability.
Customer Service: 24/7 technical hotline, multi-language, emergency deployment, and site training.
Support Documents: Full CoA, MSDS, FDA, SGS included by default; additional certifications on request.
Sustainability: Packaging take-back, eco-handling advisory, and solvent reclamation support.

10. Why Choose Dimethyl Disulfide (DMDS) from Expert ISO Manufacturers?

Consistently top-tier quality verified via multiple international standards (ISO, REACH, FDA).
Rapid, flexible order cycles and advanced online tracking.
Custom engineering and packaging available for special industries.
Proven performance in global reference projects (petrochemical, agri, pharma, environment).
Complete documentation & 24/7 support—unmatched in industry.

References & Further Reading:

• "Industrial Sulfiding Chemistry and Green Refining Solution for the Next Decade", Applied Catalysis A: General
• "Global Dimethyl Disulfide Market Outlook 2023–2030", Chemanalyst Industry Report
• "Advanced Processes for DMDS Production & Application", ResearchGate
• "Soil Fumigation Efficacy Using Dimethyl Disulfide", PubMed
• "Corrosion and Performance in Industrial DMDS Handling", NACE International

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