Diisobutyl Ketone (DIBK)
| Formula: | C₉H₁₈O |
| CAS Number: | 108-83-8 |
| EC Number (EINECS): | 203-620-1 |
| HS Code: | 29141990 |
| UN Number: | 1159 |
| IUPAC Name: | 2,6-Dimethyl-4-heptanone |
| Also Known As: | DIBK; Isovalerone |
| Molecular Weight, g/mol: | 142.24 |
Typical Specifications
| Appearance: | Clear, colorless liquid |
| Odor: | Mild, sweet odor |
| Melting Point, °C: | -41 |
| Boiling Point, °C: | 169–171 |
| Density, g/cm³ (at 20°C): | 0.802–0.805 |
| Flash Point, °C: | 56 (closed cup) |
| Refractive Index (20°C): | 1.419–1.421 |
| Purity, %: | ≥99.0 |
| Grades Available: | Industrial, Technical, Solvent Grade |
| Packaging: | 165kg drums, 190kg steel drums, bulk ISO tanks |
Applications / Uses
Primary Applications
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High-boiling, slow-evaporating solvent for paints, coatings, and varnishes
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Widely used in lacquers, thinners, and industrial cleaning formulations
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Solvent in adhesives, sealants, and inks
Secondary Applications
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Used as extractant in rare earth metal processing
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Component in solvent blends for high-solids coatings
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Plasticizer intermediate in polymer industries
End Industries Served: Paints & Coatings, Inks, Adhesives, Sealants, Chemical Processing, Cleaning, Polymers, Metal Extraction
Safety & Handling Information
Hazard Class (GHS): Flammable liquid (Category 3), Eye Irritation (Category 2), Specific Target Organ Toxicity – single exposure (Category 3)
Hazard Statements (H-Codes):
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H226: Flammable liquid and vapor
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H319: Causes serious eye irritation
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H335: May cause respiratory irritation
Precautionary Statements (P-Codes):
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P210: Keep away from heat, sparks, open flames
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P280: Wear protective gloves/eye protection
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P303 + P361 + P353: IF ON SKIN – remove contaminated clothing, rinse skin with water
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P305 + P351 + P338: IF IN EYES – rinse cautiously with water, remove contact lenses if present
Storage Conditions
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Store in a cool, well-ventilated area
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Keep container tightly closed
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Ground and bond containers when transferring
Transport Information
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ADR/RID: Class 3, UN1159, PG III
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IMDG: Class 3, UN1159, PG III
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IATA: Class 3, UN1159, PG III
Regulatory Information
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REACH Status (EU): Registered
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TSCA (USA): Listed
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ISO Certification: Available on request (ISO 9001 for manufacturing grade)
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Country Standards: Complies with EU, US, and international solvent specifications