Isophorone Diisocyanate

Superior Formula Compatibility – IPDI features excellent miscibility with most conventional organic solvents, enabling flexible formulation design and smooth processing in diverse polyurethane and chemical manufacturing systems.

Stable & User-Friendly Morphology – Presented as a transparent to pale yellow liquid with a mild camphor odor, it ensures convenient transportation, handling and uniform mixing during industrial production.

Excellent Hydrolytic Stability – Virtually insoluble in water, this material delivers outstanding moisture resistance, perfectly suited for moisture-sensitive formulas and long-term stable curing systems.

Stable Molecular Structure – Composed of stable cis and trans isomer structures, IPDI maintains consistent reaction activity and product quality, serving as a reliable monomer for high-performance polyurethane synthesis.

Product Description

Isophorone Diisocyanate (IPDI) is a premium aliphatic isocyanate monomer. Benefiting from its unique cyclic molecular structure, it exhibits stable chemical reactivity, outstanding weather resistance and low yellowing tendency, widely adopted for manufacturing high-end polyurethane functional materials.

Isophorone Diisocyanate

Product Parameters

Melting point -60°C
Boiling point 158-159 °C15 mm Hg(lit.)
density 1.049 g/mL at 25 °C(lit.)
vapor pressure 0.0004 hPa (20 °C)
refractive index n20/D 1.484(lit.)
Fp >230 °F
storage temp. Store below +30°C.
solubility Miscible with esters, ketones, ethers, and aromatic and aliphatic hydrocarbons.
form Liquid
color Clear colorless to slightly yellow
explosive limit0.7-4.5%(V)
Water Solubility <0.1 g/100 mL at 25 ºC
Sensitive Moisture Sensitive
BRN 2726467
Exposure limitsTLV-TWA 0.0454 mg/m3 (0.005 ppm) (ACGIH and NIOSH); ceiling 0.181 mg/m3 (0.02 ppm)/10 min (NIOSH). .
Stability:Reacts with all substances containing active hydrogen, such as acids, amines, water, phenols, mercaptans, amides, urea. Probably moisture sensitive.
Cosmetics Ingredients FunctionsFILM FORMING
InChI1S/C12H18N2O2/c1-11(2)4-10(14-9-16)5-12(3,6-11)7-13-8-15/h10H,4-7H2,1-3H3
InChIKeyNIMLQBUJDJZYEJ-UHFFFAOYSA-N
SMILESN(=C=O)C1CC(CC(C1)(C)C)(CN=C=O)C
LogP4.75 at 25℃
CAS DataBase Reference4098-71-9(CAS DataBase Reference)
EPA Substance Registry SystemIsophorone diisocyanate (4098-71-9)

Safety Information

Hazard Codes T,N
Risk Statements 23-36/37/38-42/43-51/53-22
Safety Statements 26-28-38-45-61
OEBD
OELTWA: 0.005 ppm (0.045 mg/m3), STEL: 0.02 ppm (0.180 mg/m3) [skin]
RIDADR UN 2290 6.1/PG 3
WGK Germany 2
RTECS NQ9370000
Autoignition Temperature430 °C
TSCA TSCA listed
HazardClass 6.1
PackingGroup III
HS Code 29291090

Storage Class

6.1A - Combustible, acute toxic Cat. 1 and 2
very toxic hazardous materials

Hazard Classifications

Acute Tox. 1 Inhalation
Aquatic Chronic 2
Eye Irrit. 2
Resp. Sens. 1
Skin Irrit. 2
Skin Sens. 1
STOT SE 3
Hazardous Substances Data4098-71-9(Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: 4825 mg/kg LD50 dermal Rat > 7000 mg/kg

Application Scenarios

IPDI is primarily used to synthesize high-performance polyurethane resins with exceptional light stability, chemical resistance and anti-aging properties. It significantly improves coating hardness, flexibility, abrasion resistance and weatherability, widely used in advanced paints, varnishes and industrial finish systems.

Additionally, it serves as a core raw material for high-elasticity elastomers, casting compounds, sealants and flexible textile coatings. It also acts as a professional curing agent for polyurethane systems and a special material intermediate for medical contact lens production, covering industrial coating, new material and high-precision manufacturing fields.

Isophorone Diisocyanate

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