Overview
Methyl isobutyl ketone ( CAS 108-10-1 ), commonly known as MIBK, is a mid-boiling ketone solvent used across coatings, adhesives, and extraction processes. Its slow evaporation rate and strong solvency make it a preferred choice.
Controlled drying and resin compatibility are critical procurement considerations for this versatile chemical. In industrial coatings and lacquers, MIBK dissolves nitrocellulose, epoxy, and vinyl resins to produce high-gloss finishes.
These film-forming finishes exhibit minimal blushing during the application process. Adhesive formulators rely on it as a carrier solvent in contact cements and pressure-sensitive adhesive systems where clean release is required.
In plastics processing, it functions as a cross-linking and curing solvent for polymer systems including rubber and synthetic resins. At food-grade and FEMA 2731 -approved purity, it is also used as a flavoring agent.
In small quantities, it can impart fruity, sweet notes to food and beverage formulations. MIBK is supplied as a clear liquid in standard drum, IBC, and bulk tanker quantities for various industrial and commercial needs.
Technical grade is the most common specification for industrial solvent applications. Food-grade material meeting specific requirements is available for flavor use, ensuring compliance with necessary safety and quality protocols.
Purity levels typically range from 99% upward depending on the intended application grade. This high level of purity ensures consistent performance across diverse manufacturing sectors and specialized chemical processes.
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Physical Properties
| Melting Point | -85 °C |
| Boiling Point | 115.8 °C @ Press: 760 Torr |
| Density | 0.8042 g/cm³ @ Temp: 20 °C |
| Flash Point | 56 °F |
| Appearance | MIBK is a colorless liquid with a pleasant, sweet, fruity odor. |
| Color | APHA: ≤15 |
| Odor | Pleasant; mild, characteristic; sharp; non-residual; ketonic. |
| Form | Liquid |
| Water Solubility | 17 g/L (20 ºC) |
| Vapor Pressure | 15 mm Hg ( 20 °C) |
| Refractive Index | n 20/D 1.395(lit.) |
| pH | 7 (20°C) |
| Log P | 1.3-1.9 at 20℃ |
Safety & Handling
Danger GHS02 GHS07 GHS08 GHS06 Hazard Statements H225 Highly Flammable liquid and vapor H303 May be harmful if swallowed H305 May be harmful if swallowed and enters airways H313 May be harmful in contact with skin H319 Causes serious eye irritation H320 Causes eye irritation H331 Toxic if inhaled H332 Harmful if inhaled H335 May cause respiratory irritation H336 May cause drowsiness or dizziness H350 May cause cancer H351 Suspected of causing cancer H372 Causes damage to organs through prolonged or repeated exposure Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P233 Keep container tightly closed. P240 Ground and bond container and receiving equipment. P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment. P242 Use non-sparking tools. P243 Take action to prevent static discharges. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P316 Get emergency medical help immediately. P317 Get emergency medical help. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P331 Do NOT induce vomiting. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P316 Get emergency medical help immediately. P301+P317 Get emergency medical help. P302+P317 Get emergency medical help. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P370+P378 Use … for extinction. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P403+P235 Store in a well-ventilated place. Keep cool. P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 2914 13 00 |
| UN Number | 1245 |
| ADR Class | 3 |
| Packing Group | II |
| Storage Class | 3 - Flammable liquids |
| WGK (Germany) | 1 |
Other Names
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Chemical Properties
- CAS Number
- 108-10-1
- EC Number
- 203-550-1
- Mol. Weight
- 100.16
- HS Code
- 2914 13 00
- Category
- Solvents