Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
Basic Information
Product Name: Isophorone
CAS Number: 78-59-1
Alias: 3,5,5-Trimethylcyclohex-2-en-1-one, Isoforon
Chemical Full Name: 3,5,5-trimethylcyclohex-2-en-1-one
Molecular Formula: C9H14O
Molecular Weight: 138.00
EINECS: 201-126-0
Structural Information
- Structure Type: Unsaturated cyclic ketone high-boiling polar solvent & fine chemical intermediate
- Structural Features: Six-membered cycloalkenone ring with three methyl substituents; conjugated carbonyl double bond structure, strong solvency for resins, polymers, pigments; can undergo hydrogenation, condensation, oxidation to produce isophorone diamine, isophorone diisocyanate (IPDI)
- Characteristic: High boiling slow-evaporating solvent, core raw material for aliphatic isocyanate curing agents
Physical & Chemical Properties
- Appearance: Colorless to pale yellow transparent oily liquid
- Odor: Mild camphor-like characteristic odor
- Melting Point: -8.1 °C
- Boiling Point: 215 °C
- Flash Point: 84 °C (closed cup)
- Density (20℃): 0.922 g/cm3
- Refractive Index (20℃): 1.476
- Solubility: Slightly soluble in water; miscible with alcohols, ketones, esters, aromatic hydrocarbons, oils; excellent dissolving power for acrylic, epoxy, alkyd, nitrocellulose resins
- Stability: Stable under sealed cool storage; resistant to weak acid/alkali; polymerizes slowly under strong acid, strong light; hydrogenated to dihydroisophorone, further aminated to IPDI monomer
Synthesis & Applications
Production Method
Trimerization condensation of acetone under alkaline high-temperature catalysis, vacuum rectification separation to obtain pure isophorone.
Main Applications
- High-boiling coating solvent: Slow-dilution solvent for automotive paint, baking varnish, printing ink, PVC coating, dissolves high molecular weight resin & pigment
- Polyurethane raw material: Intermediate for IPDI (isophorone diisocyanate), aliphatic non-yellowing curing agent for weather-resistant PU coatings
- Synthetic fragrance intermediate: Raw material for synthetic camphor, menthol series flavors
- Pesticide & pharmaceutical solvent: High-polar reaction solvent for fine chemical synthesis
- Electronic cleaning agent: Slow-evaporating high-purity solvent for precision circuit cleaning
Safety & Storage Instructions
GHS Hazard Classification
- H226 Flammable liquid and vapor
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation from vapor inhalation
- H412 Harmful to aquatic life with long lasting effects
Personal Protection
Organic vapor respirator, chemical splash goggles, oil-resistant nitrile gloves, impermeable protective clothing; operate in ventilated workshop, avoid long-term vapor inhalation.
Storage Condition
Hermetically sealed iron drum, cool dry ventilated warehouse ≤30℃; isolate oxidants, strong acids, heat sources, avoid direct sunlight.
Transportation
Class 3 flammable liquid, UN1993, Packing Group III; separate from oxidizing substances and food during transit.
Quality Specifications
- Purity (GC): ≥99.0%
- Moisture: ≤0.1%
- Chroma (Pt-Co): ≤50
- Acidity (as acetic acid): ≤0.01%
Information Summary Table
| Item | Specification |
| CAS Number | 78-59-1 |
| Product Name | Isophorone |
| Synonym | 3,5,5-Trimethylcyclohex-2-en-1-one |
| Molecular Formula | C9H14O |
| Molecular Weight | 138.00 |
| Appearance | Pale yellow oily liquid |
| Flash Point | 84℃ |
| Core Advantage | High-boiling polar solvent, key intermediate for weather-resistant aliphatic PU curing agent IPDI |
| Storage Rule | Sealed cool storage, away from oxidants and heat sources |
| Hazard Property | Flammable liquid, irritates skin/respiratory tract, long-term harmful to aquatic environment |
| Main Usage | Automotive paint slow solvent, IPDI polyurethane intermediate, ink & resin dissolver, synthetic perfume raw material |
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