Molekula
Dimethyl sulfoxide - (DMSO)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Dimethyl sulfoxide (DMSO) is a polar aprotic solvent widely used in chemical synthesis, pharmaceutical research, and as a cryoprotectant. It dissolves a broad range of organic and inorganic compounds and is known for its ability to penetrate biological membranes. CAS: 67-68-5, Molecular Formula: (CH3)2SO, Molecular Weight: 78.13, Storage: Ambient, Signal Word: None. Molekula supplies Dimethyl sulfoxide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Often bought together
Pricing & pack sizes
In stock — dispatched within 2 working days
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 L — £45.00 per pack ex VAT · £54.00 inc. VAT
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2.5 L — £105.00 per pack ex VAT · £126.00 inc. VAT
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100 mL — £20.00 per pack ex VAT · £24.00 inc. VAT
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500 mL — £25.00 per pack ex VAT · £30.00 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Clear colourless liquid |
| Refractive Index | 1.470-1.480 |
| Water | ≤0.1% |
| Colour | ≤30 APHA |
| Purity | ≥99.5% |
| Acidity | ≤ 0.05mg KOH/g |
| Crystallisation point | ≥18.1°C |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 87 °C |
| Acidity | Neutral |
For research use only. Not for human use.
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless liquid |
| Odour | Slightly sulfurous odor |
| Melting Point | 18.5 °C |
| Boiling Point | 189 °C |
| Density | 1.1 (relative, water = 1) |
| Water Solubility | Soluble in water |
| Solubility (other solvents) | Soluble in ethanol, acetone, ether, carbon tetrachloride, ethyl acetate |
| Vapour Pressure | 59.4 Pa at 20 °C |
| Refractive Index | 1.4783 |
| pKa | pKa = 35.1 |
| log P (octanol/water) | -1.35 |
Source: PubChem CID 679 (HSDB, DrugBank, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 90032283 |
| CAS Number | 67-68-5 |
| IUPAC Name | methylsulfinylmethane |
| EC Number | 200-664-3 |
| Molecular Formula | (CH3)2SO |
| Molecular Weight | 78.13 |
| Exact Mass | 78.0139 |
| SMILES | CS(=O)C |
| InChIKey | IAZDPXIOMUYVGZ-UHFFFAOYSA-N |
| InChI | InChI=1S/C2H6OS/c1-4(2)3/h1-2H3 |
| PubChem CID | 679 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| Tariff Code | 2930909599 |
Safety & GHS
Hazard statements
- H227 Combustible liquid
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Demasorb
- Demsodrox
- dimethyl sulfoxide
- Dimethyl sulphoxide
- DMSO
- Domoso
- Methane, sulfinylbis-
- Methyl sulfoxide
- Methylsulfinylmethane
- sulfinylbismethane
Frequently asked questions
What is dimethyl sulfoxide (DMSO) used for?
DMSO is commonly used as a solvent in chemical synthesis, a cryoprotectant in biological samples, and in some pharmaceutical applications due to its ability to penetrate membranes.
What is the chemical formula and molecular weight of DMSO?
The formula is (CH3)2SO with a molecular weight of 78.13 g/mol.
How should DMSO be stored?
DMSO should be stored at ambient temperature, protected from moisture and light.
What grade of DMSO does Molekula supply?
Molekula supplies DMSO in reagent grade, suitable for laboratory and industrial use.
Can Molekula supply DMSO in bulk quantities?
Yes, Molekula can supply DMSO in bulk, including drums and totes, subject to availability.
What documentation comes with a DMSO order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.