DMSO CAS 67-68-5

Dimethyl Sulfoxide Supplier

We fully appreciate your exacting requirements for purity, delivery speed, global compliance, and supply chain reliability. As a technology-driven chemical manufacturer and global supplier, we are committed to providing you with high-quality DMSO products and end-to-end bulk procurement solutions, ensuring your production processes run smoothly and efficiently.

GNEE BIO

Dimethyl Sulfoxide Manufacture & Supplier

DMSO has excellent solvency, low toxicity, high polarity, strong permeability, and exceptional stability. Plays an irreplaceable role in agrochemicals, electronics, petrochemicals, polymer materials, coatings, and many other industries.

Item	DMSO, Methyl Sulfoxide, Dimethyl Sulphoxide
CAS No.	67-68-5
Molecular Formula	C₂H₆OS
Molecular Weight	78.13
Appearance	Colorless, transparent liquid
Purity Grade	99.9% / 99.7% Industrial Grade

Get A Free Quote

Overview Of High Purity Methyl Sulfoxide

Dimethyl Sulfoxide (DMSO), also known by its chemical name Methyl Sulfoxide and its registry number CAS 67-68-5, is one of the most widely used organic sulfur compounds in global chemical and industrial applications. With excellent solvency,low toxicity, high polarity, strong permeability, and exceptional stability, DMSO plays an irreplaceable role in agrochemicals, electronics, petrochemicals, polymer materials, coatings, and many other industries.

As a direct manufacturer and bulk supplier, we serve B2B clients across South America, the Middle East, Africa, and Southeast Asia, providing consistent quality, competitive pricing, on-time delivery, and complete documentation. Our goal is to support your production needs with reliable chemical raw materials—avoiding retail-level distractions and focusing strictly on industrial-scale buyers, traders, and manufacturers.

Product Positioning: Industrial-grade and high-purity solvents, suitable for bulk procurement needs in industries such as fine chemicals, electronic cleaning, agrochemicals, coatings, and textiles.

Core Advantages: Strong dissolving power, good thermal stability, miscible with a variety of solvents, suitable for high-temperature processes, low evaporation loss, and direct factory supply reduces procurement costs.

Product Identification

Item	Value
Chemical name	Dimethyl sulfoxide
Synonyms	DMSO; methyl sulfoxide
CAS	67-68-5
EC (EINECS)	200-664-3
Molecular formula	C2H6OS
Molecular weight	78.13 g/mol
Structural formula	(CH3)2S=O
HS code (ref.)	2930.90 (may vary by country)
UN number	Not typically classified as dangerous for transport (check local regs)

Typical Grade Specifications

Grade	Assay (GC)	Water (KF)	Color (APHA)	Acidity (as AcOH)	Non-volatile residue	Notes
Industrial	≥ 99.5%	≤ 0.20%	≤ 20	≤ 0.03%	≤ 0.02%	General industrial uses
High Purity / General	≥ 99.9%	≤ 0.05%	≤ 10	≤ 0.02%	≤ 0.005%	Fine chemicals, R&D
Anhydrous / Extra Dry	≥ 99.9%	≤ 0.01% (100 ppm)	≤ 10	≤ 0.02%	≤ 0.005%	Moisture-critical syntheses
Electronic / Low-metal (indicative)	≥ 99.9%	≤ 0.02% (200 ppm)	≤ 10	≤ 0.02%	≤ 0.005%	Metals each typically ≤ 0.1–1 ppm; supplier-specific

Basic Physical Properties (20–25°C unless noted)

Physical Properties

Property	Value
Appearance	Colorless, clear liquid; slight odor
Density	1.095–1.101 g/mL at 20°C
Melting (freezing) point	18.4–19.0°C
Boiling point	189–190°C (1 atm)
Flash point (closed cup)	~95°C
Autoignition temperature	~300–302°C
Viscosity	~1.99–2.0 mPa·s at 20°C; ~1.3 mPa·s at 30°C
Refractive index	nD20 = 1.479–1.480
Surface tension	~43–44 mN/m at 20°C
Vapor pressure	~0.55 mmHg (20°C); ~1.0 mmHg (25°C)
Vapor density (air=1)	~2.7
Dielectric constant	~46.7 (20°C); ~47–48 (25°C)
Log Kow (octanol/water)	−1.3 to −1.1
Heat of vaporization	~56 kJ/mol (at bp)
Heat capacity (Cp, liquid)	~2.5 J/g·K at 25°C
Thermal conductivity	~0.20 W/m·K at 25°C
Explosive limits (vapor in air)	Not readily formed at ambient due to low volatility

Physical Properties

Medium / Solvent	Result	Notes
Water	Completely miscible	Hygroscopic; dry handling for anhydrous grades
Alcohols (MeOH, EtOH, i‑PrOH)	Miscible	—
Ketones (acetone, MEK)	Miscible	—
Ethers (THF, dioxane)	Miscible	—
Aromatics (toluene, xylenes)	Miscible	Good solvent power
Chlorinated solvents (DCM, CHCl3)	Miscible	—
Aliphatic hydrocarbons (hexane)	Limited to partial miscibility	Solubility decreases with nonpolarity

Electrical/Impurity Targets for Electronic Grade (indicative)

Parameter	Typical target	Note
Alkali metals (Na, K)	≤ 0.1–1.0 ppm each	Supplier-specific ICP limits
Alkaline earths (Ca, Mg)	≤ 0.1–1.0 ppm each	Supplier-specific
Transition metals (Fe, Cu, Zn, etc.)	≤ 0.1–1.0 ppm each	Supplier-specific
Ionic conductivity	≤ few µS/m	Correlates with water/ionic load
Resistivity	≥ 0.5–1.0 MΩ·cm	Temperature/impurity dependent

Packaging and Handling

Item	Typical options / info
Standard packaging	200 kg steel drum; 1000 L IBC; ISO tank; bulk
Storage temperature	Keep above melting point (~20°C) to prevent crystallization
Compatibility	Avoid strong oxidizers; assess with reactive halides/strong bases
Hygroscopicity	Can absorb moisture; use dry nitrogen blanket for dry grades

Regulatory and Safety Snapshot

Item	Information
GHS classification	This is not usually classified as a dangerous good; please contact us to view the Safety Data Sheet (SDS) for details on differences in jurisdictions.
SDS sections	Contact us to obtain the 16-part SDS (Security Data Sheet).
Transport	Often non-dangerous for transport (IMDG/IATA/ADR); verify locally
PPE notes	Gloves, goggles, protective clothing; skin penetration facilitator—avoid skin contact

Advantages And Properties Of Methyl Sulfoxide

DMSO’s most notable characteristic is its exceptional solubility—it is hailed as a universal solvent, capable of dissolving most organic compounds and many inorganic salts, making it irreplaceable in industrial applications. Furthermore, DMSO possesses good permeability, stability, and low toxicity, enabling it to play a crucial role in numerous industrial processes.

Appearance and Odor: Colorless, transparent liquid with a faint odor.
Boiling Point: 189–190°C (atmospheric pressure)
Melting Point: 18–19°C (may crystallize at low temperatures; refrigerated storage is recommended)
Flash Point (Closed Cup): Approx. 95°C
Density: Approx. 1.095 g/cm³ (20°C)
Viscosity: Approx. 1.99 mPa·s (20°C)
Refractive Index: Approx. 1.479 (20°C)
Dielectric Constant: High dielectric constant, suitable for polar systems
Solubility: Miscible with a wide range of solvents including water, alcohols, ketones, ethers, and aromatics; extremely strong dissolving power
Polarity/Solubility Parameters: Highly polar, suitable for a broad spectrum of solutes (polymers, some inorganic salts, pharmaceutical intermediates, etc.)
Stability: Stable at room temperature; avoid long-term exposure to strong oxidants, strong acids, and strong bases; compatibility with certain halides and active metals needs to be assessed
Volatility and Odor Control: Low volatility, beneficial for reducing VOC emissions

Superior solubility and permeability: Significantly improves the solubility of sparingly soluble substances, enhancing mass transfer and reaction rates.
High boiling point and low toxicity (compared to many highly polar solvents): Easier to recycle and use in closed-loop systems in industrial environments.
Low VOC load: Facilitates compliant production and environmental management.
Good thermal stability and chemical inertness (most systems): Facilitates solvent selection for high-temperature reaction systems.
Completely miscible with water: Facilitates aqueous phase cleaning and post-treatment.

DMSO can dissolve more than 35 broadly used industrial substances, far exceeding the performance of general organic solvents. This makes it especially useful in:

polymer synthesis
pharmaceutical intermediates
agrochemical formulations
coatings and dyes
cleaning and extraction processes

DMSO is capable of penetrating bio-membranes and polymer structures. This feature is crucial in pharmaceutical manufacturing, drug delivery systems, and extraction processes.

Does not easily decompose at high temperatures
Non-reactive toward most metals and organics
Safe for high-temperature synthesis and closed-system reactions

Compared with stronger solvents like DMF, NMP, or dichloromethane, DMSO provides:

lower toxicity
milder handling requirements
reduced environmental pressure
easier residue removal in final products

Fully miscible with:
water
alcohols
esters
ketones
amines
hydrocarbons

This makes DMSO an excellent solvent for multi-phase reaction systems.

Non-volatile
Non-explosive
Low vapor pressure
Strong resistance to oxidation

DMSO has stable long-term storage performance and safe operation performance.

Applications Of Methyl Sulfoxide

Dimethyl sulfoxide (DMSO) is a highly polar, strong dissolving agent with relatively low toxicity. It is commonly used in reactions, extractions, and crystallizations in fine chemicals; as a cleaning, stripping, and electrolyte additive in electronic chemicals; for dissolving and formulating polymers, inks, and coatings; for dispersing graphene/carbon nanotubes in materials and new energy fields and participating in battery systems; and can also be used as a cell cryoprotectant.

Fine Chemicals & Synthesis

As a highly polar solvent, it improves the rate and selectivity of nucleophilic substitution, condensation, and coupling reactions.

Value: Increased yield, shortened reaction time, and reduced feedstock excess coefficient.

Intermediates

As a solvent for intermediate synthesis, extraction agent, and crystallization solvent.
Strict control of impurities and metal contamination levels is required in cell and enzyme catalysis fields.

Agrochemicals

Used as a solvent, solubilizer, and penetration enhancer in formulations, improving the solubility and foliar absorption of active ingredients.
Can be used as a substitute or compound with NMP, DMF, etc., to optimize toxicology and regulatory compliance.

Electronics and Lithium Batteries

Electronic-grade DMSO can be used as a cleaning, coating, and precursor solvent.
Research and pilot-scale support for lithium battery and supercapacitor electrolyte/binder systems (system compatibility and moisture control verification required).

Coatings, Inks, and Resins

Improves wetting and dispersion of pigments and fillers, enhances flow and film-forming properties.
Serves as a functional solvent in high-solids/low-VOC formulations.

Textiles and Leather

Dyeing, finishing, and recycled fiber solvents (e.g., certain polymer systems).
Improves dye uptake and hand feel, reduces energy consumption.

Petrochemicals and Natural Gas

Extraction, desulfurization, demulsification, and viscosity reduction formulation components.
Stable under high-temperature conditions, easy to recycle.

Adhesives and Sealants

Dissolves resin monomers/prepolymers, improves initial tack and curing consistency.
Reduces formulation VOCs and odor.

Compliance Statement: We do not directly target C-end pharmaceutical end-use applications. B-end clients must ensure compliance with usage and registration pathways.

Why choose Gnee BIO?

Gnee BIO boasts over 26 senior technical personnel, 15 laboratory staff, and an operations and sales team of more than 80 people. Our factory employs advanced continuous production processes to ensure product quality stability and batch consistency. Our production capacity can meet the needs of large customers exceeding 5,000 tons per month, guaranteeing a long-term stable supply unaffected by market fluctuations.

Factory Strength

Owned/jointly-owned factories, continuous production lines and automated DCS control
ISO ISO 9001/14001/45001 certified; some units managed according to GMP requirements.
Complete EHS system and hazardous chemical management, adhering to REACH (EU), K-REACH, and Taiwan TSCCA compliance pathways.
Expandable annual capacity; peak season production scheduling mechanism; green channel for urgent orders.

Quality Control and Traceability

Three-level quality control from raw materials to process to finished products; online GC and KF automatic moisture monitoring. Each batch’s COA includes GC spectrum/metal ion/color/UV, etc. Sample and retention system; batch traceability to key process parameters.

Global Logistics and Localized Services

Partnering with top shipping companies/freight forwarders/customs brokers, offering multiple trade terms including FOB/CIF/CFR/DDU/DDP. Experienced in South America (e.g., Brazil, Chile), the Middle East (UAE), Africa (South Africa, Egypt), and Southeast Asia (Vietnam, Thailand, Indonesia, Malaysia, Philippines). Multilingual services available (English/Spanish/Portuguese/Arabic/French/Indonesian/Vietnamese/Thai).

Direct Manufacturer

Product Quality Assurance

Supply Chain and Delivery

R&D Capabilities

Quality and Compliance

Technical Services

Who We Are

We are a professional team specializing in fine chemicals, basic chemicals, specialty chemicals, and functional materials. We serve clients in the pharmaceutical intermediates, electronic chemicals, coatings and adhesives, new energy, water treatment, and agrochemical industries, providing integrated solutions from formulation development to large-scale production.

Team Composition

We have approximately 280 employees, including 26 in R&D, 125 in production and EHS, 14 in quality, 45 in supply chain and operations, and 35 in business and customer success. Our core leadership team has 23 years of experience in the chemical industry and possesses extensive knowledge of chemical products. Feel free to contact us for consultation.

Mission and Vision

To bring chemical products to market more safely, efficiently, and environmentally friendly, becoming a trusted partner in our respective niche markets.

Our Services

Pre-sales and Technical Support

Product Selection Recommendations: Providing product solutions based on application scenarios.

Technical Documentation Provision: TDS (Technical Data Sheet), SDS (Safety Data Sheet), COA sample, process guidelines, etc.

Sample Support: Providing free samples, standard tests, and application experiment reports.

Technical Exchange: Joint process review window, PHA/HAZID recommendations.

Ask about custom services

Customization and R&D Services

Custom Synthesis/Formulation Development (CRO/CMO/CDMO): Customizing purity, impurity profiles, particle size, color, stability, etc., according to specifications.

Process Optimization and Scale-up: Designing pilot-scale to mass production routes, yield and cost optimization, green alternatives and solvent recycling solutions.

Joint Development and Application (JDA): Jointly defining target specifications, validation methods, and milestones with clients; IP/confidentiality clauses can be customized.

Ask about custom services

Quality and Compliance Support

Quality System Integration: Sharing and auditing cooperation on ISO 9001/14001/45001 documents.

Incoming and Outgoing Inspection: Batch-by-batch COA, sample retention management, and accompanying testing methods (GC/HPLC/ICP, etc.).

Change Management (MOC): Advance notification and revalidation support for changes to raw materials, processes, equipment, production lines, locations, etc.

Certification: SGS/CE/REACH, RoHS, hazardous chemical classification and transportation compliance.

Ask about custom services

Production and Supply Chain Services

Capacity and Delivery Commitment: Flexible production scheduling, VMI/safety stock, JIT supply, long-term framework agreements.

Packaging and Label Customization: IBC/drum/small packaging, liner/valve material selection, multilingual labels and QR code traceability.

Logistics and Temperature Control: Ambient temperature/cold chain/insulated transportation, hazardous materials classification transportation solutions and customs clearance support.

Export and Documentation: Commodity inspection, certificate of origin, MSDS, TDS, COA, SOP, test reports, packing lists and bills of lading services.

Ask about custom services

After-sales Service and Continuous Improvement

Customer Complaint Handling and Technical Support SLA: Timely response, closed-loop technical support.

Regular Business Review (QBR): Quality indicators (PPM, OTD), cost optimization, carbon reduction and ESG collaborative projects.

Third-Party Inspection Support: Supports third-party inspections such as SGS/BV, with full traceability of the inspection process.

Ask about custom services

Gnee BIO

FAQ

Need help? We’re happy to assist you!
Please feel free to contact us for free samples and services!

Contact Us

What is the Minimum Order Quantity (MOQ)?

Standard MOQ is 1 ton; Electronic grade/special customized grade MOQ may be 2–5 tons; Full container load (FCL) or ISO tanks enjoy better pricing.

Can you provide samples?

We can provide 1–5 kg industrial samples for experimental verification, freight collect or credited to the first order. Electronic grade samples are managed according to the application process.

How long is the delivery time?

In-stock items ship within 3–7 days; customized specifications are scheduled for production within 7–15 days; sea freight delivery time depends on the destination port and route (Asia 7–15 days, Middle East 15–25 days, Africa/South America 25–45 days for reference).

How to ensure no crystallization in winter?

We provide insulated packaging, heating belts, or winter temperature control solutions, and provide temperature records during transportation (optional).

How to control metal ions and moisture?

High-purity raw materials, inert material contact, online drying and clean filling are used; electronic-grade processes are completed in a clean area and packaged in special containers.

Dimethyl Sulfoxide Supplier

GNEE BIO

Dimethyl Sulfoxide Manufacture & Supplier

Overview Of High Purity Methyl Sulfoxide

Product Identification

Advantages And Properties Of Methyl Sulfoxide

Applications Of Methyl Sulfoxide

Fine Chemicals & Synthesis

Intermediates

Agrochemicals

Electronics and Lithium Batteries

Coatings, Inks, and Resins

Textiles and Leather

Petrochemicals and Natural Gas

Adhesives and Sealants

Why choose Gnee BIO?

Our Services

Pre-sales and Technical Support

Customization and R&D Services

Quality and Compliance Support

Production and Supply Chain Services

After-sales Service and Continuous Improvement

FAQ

What is the Minimum Order Quantity (MOQ)?

Can you provide samples?

How long is the delivery time?

How to ensure no crystallization in winter?

How to control metal ions and moisture?

Prod Dimethyl Sulfoxide

Dichloromethane

Glacial Acetic Acid

Mono Ethylene Glycol

Dimethylbenzene

P-XYLENE

Methyl methacrylate

N,N-Dimethylacetamide

About Us

Products

Blog

Contact