Molekula
4-Hydroxy-4-methylpentan-2-one
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
4-Hydroxy-4-methylpentan-2-one (CAS 123-42-2) is a synthetic ketone solvent and intermediate used in organic synthesis, pharmaceuticals, and as a solvent for resins, coatings, and adhesives. It appears as a colorless liquid with a mild odor. Key specifications include a molecular formula of (CH3)2C(OH)CH2COCH3, molecular weight of 116.16 g/mol, and ambient storage requirements. The product carries a signal word of "Warning" per GHS classification. Molekula supplies 4-Hydroxy-4-methylpentan-2-one 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.
Pricing & pack sizes
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.
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100 mL — £113.00 per pack ex VAT · £135.60 inc. VAT
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Specifications
Specifications available on request — see Documents below or contact our sales team.
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 58 °C |
| Transport Class | 3 |
| Packing Group | III |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless liquid |
| Odour | Faint pleasant odor |
| Melting Point | -47 °C |
| Boiling Point | 169-171 °C |
| Density | 0.93 (relative, water = 1) |
| Vapour Pressure | 0.97 mmHg AT 20 °C |
| Refractive Index | 1.4232 |
Source: PubChem CID 31256 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 90027626 |
| CAS Number | 123-42-2 |
| IUPAC Name | 4-hydroxy-4-methylpentan-2-one |
| EC Number | 204-626-7 |
| Molecular Formula | (CH3)2C(OH)CH2COCH3 |
| Molecular Weight | 116.16 |
| Exact Mass | 116.0837 |
| SMILES | CC(=O)CC(C)(C)O |
| InChIKey | SWXVUIWOUIDPGS-UHFFFAOYSA-N |
| InChI | InChI=1S/C6H12O2/c1-5(7)4-6(2,3)8/h8H,4H2,1-3H3 |
| PubChem CID | 31256 |
| UN Number | UN1148 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29144010 |
| Tariff Code | 2914401000 |
Safety & GHS
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Flammable
GHS02
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H226 Flammable liquid and vapour
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H361 Suspected of damaging fertility or the unborn child
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P263 Avoid contact during pregnancy/while nursing
- P304+341 IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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
- Acetonyldimethylcarbinol
- Diacetonalcohol
- Diacetonalkohol
- Diacetone
- Diacetone alcohol
- Diacetone-alcool
- Diketone alcohol
- Pyranton
- Pyranton A
- Tyranton
Frequently asked questions
What is 4-Hydroxy-4-methylpentan-2-one (CAS 123-42-2) commonly used for?
It is primarily used as a solvent in coatings, adhesives, and inks, as well as a precursor in the synthesis of pharmaceuticals and agrochemicals.
What is the molecular formula and molecular weight of this compound?
The molecular formula is **(CH₃)₂C(OH)CH₂COCH₃**, and the molecular weight is **116.16 g/mol**.
What safety classification does this chemical have, and how should it be stored?
The **signal word is 'Warning'** (indicating moderate hazard). Store at **ambient conditions** in a tightly sealed container, away from oxidizing agents and heat.
What grades or purities does Molekula supply for this product?
Molekula supplies **technical grade** and **high-purity (98%+)** versions; let us know your application for the most suitable option.
Can Molekula supply 4-Hydroxy-4-methylpentan-2-one in bulk quantities?
Yes, we offer **bulk packaging options** (drums, IBCs) for large-scale industrial customers—contact us for pricing and lead times.
What documentation comes with an order of this chemical?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS/SDS)**, and **batch-specific documentation** upon request.
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.