Molekula
Methyl isobutyl ketone (M.I.B.K) 4-Methyl-2-pentanone) SG
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
Methyl isobutyl ketone (MIBK), also known as 4-methyl-2-pentanone, is a colorless, flammable solvent widely used in industrial coatings, adhesives, and as an extractant in chemical processing. It is also employed in the production of resins, lacquers, and as a cleaning agent for metals and electronics. This chemical has a CAS number of 108-10-1, with the molecular formula (CH3)2CHCH2COCH3 and a molecular weight of 100.16. It is stored at ambient conditions but carries a Danger signal word due to its hazardous properties.
Molekula supplies Methyl isobutyl ketone (M.I.B.K) 4-Methyl-2-pentanone) SG at ≥ 99% purity in 2.5 L packs, from £56.04 inc. VAT. It is made or sourced to order. Every batch ships with a certificate of analysis, and safety data sheets are available in 5 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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2.5 L — £46.70 per pack ex VAT · £56.04 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 to pale yellow liquid |
| Refractive Index | 1.394 - 1.397 |
| Boiling Point | 115 - 117 Deg C |
| Identification | Conforms to reference |
| Assay | ≥ 99% |
| Free acid | ≤ 0.02% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 14 °C |
| Transport Class | 3 |
| Packing Group | II |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 31003684 |
| CAS Number | 108-10-1 |
| Molecular Formula | (CH3)2CHCH2COCH3 |
| Molecular Weight | 100.16 |
| SMILES | CC(C)CC(=O)C |
| UN Number | UN1245 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2914.13.00.00 |
| Tariff Code | 2914130000 |
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
- EUH066 Repeated exposure may cause skin dryness or cracking
- H225 Highly flammable liquid and vapour
- H319 Causes serious eye irritation
- H332 Harmful if inhaled
- H336 May cause drowsiness or dizziness
- H351 Suspected of causing cancer
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P304+340 IF INHALED: 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
- P308+313 IF exposed or concerned: Get medical advice/attention
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.
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
No alternate names recorded for this product.
Frequently asked questions
What is Methyl isobutyl ketone (MIBK) commonly used for?
MIBK is primarily used as a solvent in paints, coatings, adhesives, and as an extractant in the pharmaceutical and petrochemical industries.
What is the chemical formula and molecular weight of MIBK?
The chemical formula is (CH₃)₂CHCH₂COCH₃, and the molecular weight is 100.16 g/mol.
What safety classification does MIBK have, and how should it be handled?
MIBK is classified with the signal word 'Danger' due to its flammability and acute toxicity; handle in a well-ventilated area with appropriate PPE.
What grades of MIBK does Molekula supply?
Molekula supplies MIBK to a specification of assay ≥ 99% and free acid ≤ 0.02%, as a colourless to pale yellow liquid with a refractive index of 1.394 - 1.397 and a boiling point of 115 - 117 Deg C.
Can Molekula supply MIBK in bulk quantities?
Yes, Molekula can supply MIBK in bulk (drums, IBCs, or tanker loads) depending on customer needs and logistics.
What documentation comes with a MIBK order from Molekula?
Orders include a Certificate of Analysis (CoA), Safety Data Sheet (SDS), and, if requested, a Customs Declaration for international shipments.
Where can I buy Methyl isobutyl ketone (M.I.B.K) 4-Methyl-2-pentanone) SG?
Directly from Molekula, which lists Methyl isobutyl ketone (M.I.B.K) 4-Methyl-2-pentanone) SG in 2.5 L packs from £56.04 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.
Is Methyl isobutyl ketone (M.I.B.K) 4-Methyl-2-pentanone) SG dangerous goods for shipping?
Yes. Methyl isobutyl ketone (M.I.B.K) 4-Methyl-2-pentanone) SG ships as dangerous goods: UN1245, class 3, packing group II.
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.