4-METHYLPENT-3-EN-2-ONE- ▸ Coatings solvent: Solvent for lacquers, enamels, and varnishes
- ▸ Polymer solutions: Dissolves vinyl, cellulose resins, gums, and rubbers
- ▸ Paint removers: Active solvent in paint and varnish strippers
- ▸ Chemical intermediate: Feedstock for methyl isobutyl ketone (MIBK)
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
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Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.
Mesityl oxide (CAS 141-79-7) is an alpha,beta-unsaturated ketone used mainly as an industrial solvent. It dissolves resins, gums, vinyl and cellulose polymers, lacquers, enamels, inks, and oils, is a component of paint and varnish removers, and is an intermediate in the manufacture of methyl isobutyl ketone.
Frequently Asked Questions
What is mesityl oxide used for?
Mesityl oxide (CAS 141-79-7) is an alpha,beta-unsaturated ketone used mainly as an industrial solvent. It dissolves resins, gums, vinyl and cellulose polymers, lacquers, enamels, inks, and oils, is an active solvent in paint and varnish removers, and is an intermediate in the manufacture of methyl isobutyl ketone (MIBK).
What is the common name of mesityl oxide?
Mesityl oxide is the common name for 4-methyl-3-penten-2-one (CAS 141-79-7, formula C6H10O). It is also referred to as methyl isobutenyl ketone. RawSource supplies it as a bulk oxygenated solvent and intermediate.
Is mesityl oxide an alcohol or a ketone?
Mesityl oxide is a ketone — specifically an alpha,beta-unsaturated (conjugated) ketone, not an alcohol. Its carbonyl and conjugated double bond give it both solvent power and reactivity as a chemical intermediate, including in MIBK manufacture.
What HS code and UN number apply to mesityl oxide?
Mesityl oxide classifies under HS 2914.19 (acyclic ketones, other) and is assigned UN 1229 (MESITYL OXIDE) for transport. RawSource ships in compliance with applicable DOT/IMDG requirements and provides full shipping documentation with each order.
What is the cost of bulk mesityl oxide?
Bulk mesityl oxide pricing depends on volume, packaging (drums, totes, bulk), and delivery point. We quote per order rather than listing spot pricing — request a bulk quote and RawSource will return current pricing with a CoA and SDS.