Molekula
2,3-Butanediol
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
2,3-Butanediol is a colorless, viscous liquid used as a chemical intermediate in the production of polymers, solvents, and pharmaceuticals. It is also employed in the synthesis of fine chemicals and as a fermentation product in biotechnology. Other applications include resin manufacture, dissolving dyes, serving as a blending agent, and crosslinking naphthalene-1,5-diisocyanate in certain hard-rubber products. CAS: 513-85-9, Molecular Formula: C4H10O2, Molecular Weight: 90.12 g/mol, Storage: Ambient, Signal Word: None.
Molekula supplies 2,3-Butanediol at >99% purity in 100 g packs, from £90.84 inc. VAT. It is made or sourced to order. Every batch ships with a certificate of analysis, and safety data sheets are available in 8 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
On backorder — expected to ship by 5 December 2026
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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100 g — £75.70 per pack ex VAT · £90.84 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 | Colourless liquid |
| Refractive Index | 1.434 - 1.440 |
| Specific Gravity | 1.001 - 1.005 |
| Assay | >99% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 85 °C |
| Transport Class | Not regulated |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Nearly colorless, crystalline solid or liquid |
| Odour | Odorless |
| Melting Point | 19 °C |
| Boiling Point | 182 °C at 760 mmHg |
| Water Solubility | Miscible with water |
| Solubility (other solvents) | Easily soluble in low molecular mass alcohols and ketones |
| Vapour Pressure | 0.243 mmHg at 25 °C |
| Refractive Index | 1.438 |
| pKa | pKa = 14.9 |
| log P (octanol/water) | -0.92 |
Source: PubChem CID 262 (HSDB, Human Metabolome Database (HMDB))
Identification
| Property | Value |
|---|---|
| SKU | 18486659 |
| CAS Number | 513-85-9 |
| IUPAC Name | butane-2,3-diol |
| EC Number | 208-173-6 |
| Molecular Formula | CH3CH(OH)CH(OH)CH3 |
| Molecular Weight | 90.12 |
| Exact Mass | 90.0681 |
| SMILES | CC(C(C)O)O |
| InChIKey | OWBTYPJTUOEWEK-UHFFFAOYSA-N |
| InChI | InChI=1S/C4H10O2/c1-3(5)4(2)6/h3-6H,1-2H3 |
| PubChem CID | 262 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2905.39.9000 |
| Tariff Code | 2905399590 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P403 Store in a well-ventilated place
Documents
Safety Data Sheets (SDS)
Available in English, German, Spanish, French, Italian, Portuguese, Arabic, Dutch.
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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 2,3-Butanediol, (R*,R*)-(.+/-.)-
- 2,3-butylene glycol
- 2,3-Dihydroxybutane
- Butane-2,3-diol
- Dimethylene glycol
- Dimethylethylene glycol
- DL-2,3-Butanediol
- Omega-butylene glycol
- Pseudobutylene glycol
- Sym-dimethylethylene glycol
Frequently asked questions
What is 2,3-Butanediol used for?
2,3-Butanediol is used as a chemical intermediate in the synthesis of pharmaceuticals, polymers, and solvents, and as a precursor in the production of 1,3-butadiene.
What is the chemical formula and molecular weight of 2,3-Butanediol?
The formula is CH3CH(OH)CH(OH)CH3 and the molecular weight is 90.12 g/mol.
How should 2,3-Butanediol be stored?
It should be stored at ambient temperature, protected from moisture and contamination.
What grade of 2,3-Butanediol does Molekula supply?
Molekula supplies 2,3-Butanediol with an assay of >99%; custom grades available upon request.
Can Molekula supply 2,3-Butanediol in bulk?
Yes, Molekula can supply 2,3-Butanediol in bulk quantities; please contact sales for details.
What documentation comes with a purchase of 2,3-Butanediol?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation available upon request.
Where can I buy 2,3-Butanediol?
Directly from Molekula, which lists 2,3-Butanediol in 100 g packs from £90.84 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
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.