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Polymers & Resins REACH

Isophorone diisocyanate

CAS Number
4098-71-9
EC Number
223-861-6
Chemical Formula
C12H18N2O2
Molecular Weight
222.28 g/mol
Industries:AutomotiveAerospace & DefenseCoatings, Adhesives, Sealants & ElastomersPlastics & Polymers

Description

Isophorone diisocyanate ( CAS 4098-71-9 ), commonly known as IPDI, is an aliphatic cycloaliphatic diisocyanate monomer used to build polyurethane polymers with superior UV and weathering resistance. Unlike aromatic isocyanates, IPDI-based systems retain color stability over time, making it a preferred building block where appearance and outdoor durability are non-negotiable for manufacturers. In automotive and industrial coatings, IPDI is reacted with polyols to produce two-component polyurethane topcoats and clearcoats that resist yellowing under prolonged UV exposure during service life. Aerospace and defense applications rely on IPDI-based polyurethane systems for protective coatings on aircraft exteriors and structural components where long-term performance under harsh environmental conditions is critical. Adhesive and sealant formulators use IPDI to crosslink moisture-cure or two-part systems bonding plastics, composites, and metals in demanding assemblies. It also serves as a building block for dispersions. IPDI is supplied as a clear to slightly yellow liquid in standard industrial packaging including drums and IBC containers. It is available in technical and industrial grades for various uses. Purity specifications are typically at 99%+ for polymer-grade applications. Prepolymer and trimer forms are also commercially available for formulators requiring modified reactivity or reduced vapor pressure. Contact us for supply of Isophorone diisocyanate Request Quote

Other Names (Synonyms)

Isophorone diamine diisocyanate | Isocyanic acid, methylene(3,5,5-trimethyl-3,1-cyclohexylene) ester | 3-Isocyanatomethyl-3,5,5-trimethylcyclohexylisocyanate | IPDI | 5-Isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane | Cyclohexane, 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethyl- | 3,3,5-Trimethyl-5-(isocyanatomethyl)cyclohexyl isocyanate | 1-(Isocyanatomethyl)-5-isocyanato-1,3,3-trimethylcyclohexane

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point-60 °C
Boiling Point158 °C @ Press: 10 Torr
Density1.056 g/cm³
Flash Point>230 °F
Appearancecolourless or slightly yellow liquid
ColorClear colorless to slightly yellow
FormLiquid
Water Solubility<0.1 g/100 mL at 25 ºC
Vapor Pressure0.0004 hPa (20 °C)
Refractive Indexn 20/D 1.484(lit.)
Log P4.75 at 25℃

Safety & Handling

Danger
GHS06· ToxicGHS08· Health HazardGHS09· EnvironmentGHS07· IrritantGHS05· Corrosive

Hazard Statements

H302Harmful if swallowed
H312Harmful in contact with skin
H314Causes severe skin burns and eye damage
H315Causes skin irritation
H317May cause an allergic skin reaction
H318Causes serious eye damage
H319Causes serious eye irritation
H330Fatal if inhaled
H331Toxic if inhaled
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335May cause respiratory irritation
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H402Harmful to aquatic life
H411Toxic to aquatic life with long lasting effects
H412Harmful to aquatic life with long lasting effects

Precautionary Statements

P233Keep container tightly closed.
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P272Contaminated work clothing should not be allowed out of the workplace.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P284In case of inadequate ventilation wear respiratory protection.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P319Get medical advice/attention if you feel unwell.
P320Specific treatment is urgent (see … on this label).
P321Specific treatment (see … on this label).
P330Rinse mouth.
P363Wash contaminated clothing before reuse.
P391Collect spillage.
P403Store in a well-ventilated place.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P316Get emergency medical help immediately.
P364Take off contaminated clothing and wash it before reuse.
P233Store in a well-ventilated place. Keep container tightly closed.
P331Rinse mouth. Do NOT induce vomiting.
P354IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29291090
UN Number2290
ADR Class6.1
Packing GroupIII
Storage Class6.1A - Combustible, acute toxic Cat. 1 and 2 very toxic hazardous materials
WGK (Germany)2