INDIVIDUAL CHEMICAL / CAS 4098-71-9
IPDI · Cycloaliphatic diisocyanate · Polyurethane intermediate
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| Core field | Recorded information |
|---|---|
| Chemical name | Isophorone diisocyanate (IPDI) Source ↗ |
| CAS number | 4098-71-9 Source ↗ |
| Synonyms | IPDI; 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate; isophorone diamine diisocyanate Source ↗ |
| Molecular formula | C12H18N2O2 Source ↗ |
| Molecular weight | 222.3 g/mol Source ↗ Rounded identity value already shown on the profile. |
| IUPAC name | Not yet recorded / may not apply |
| PubChem CID | Not yet recorded / may not apply |
| Identity sources | https://www.osha.gov/chemicaldata/369 Source ↗ Source reference recorded for this record's scope; source freshness is a separate review. |
| Uses | Polyurethane intermediate / reactive monomer. IPDI is used to produce polyurethane coating resins, prepolymers, adhesives and elastomer systems. Also known as 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate. This is an individual substance record, not a finished formulation or a specific supplier grade. Source ↗ Supplier/source description; applicability remains grade-specific. |
| Hazards | Reactive isocyanate; inhalation, skin, eye, sensitization and moisture-reactivity context is linked on the profile. Source ↗ Hazard context, not a complete supplier GHS classification. |
| Appearance | Colorless to slightly yellow liquid Source ↗ |
| Density | 1.058 g/cm³ Source ↗ 20 °C · DIN EN ISO 2811 / ASTM D 2111 · Typical |
| Melting point | Not yet recorded / may not apply |
| Boiling point | Not yet recorded / may not apply |
| Solubility | Not yet recorded / may not apply |
| SDS/TDS | Isophorone diisocyanate (IPDI) — reference SDS Source ↗ CAS 4098-71-9 identity reference. Document product: Isophorone diisocyanate, mixture of isomers. Matches the generic substance identity, not every supplier grade. Confirm physical form, purity, stabilizers and regional applicability for your actual material. |
This material’s published information has not yet been verified by a human reviewer.
Human verification concerns the stated information and scope. It is separate from an EcoSafe score, certification or safety approval.OSHA identity and chemical data ↗ · EPA CompTox identity ↗
IPDI is a colorless to slightly yellow liquid. Its two isocyanate groups participate in polyurethane chemistry. Evonik describes uses in coating resins, prepolymers, polyurethane dispersions and adhesive systems. Performance depends on the co-reactants and finished formulation.
The following are supplier-specific examples from Evonik’s VESTANAT® IPDI US-origin TDS, dated September 9, 2025; they are not universal specifications for every IPDI supply.
Manufacturer TDS and application discussion (PDF) ↗
IPDI is a reactive isocyanate. Consult the exact product SDS for inhalation, skin and eye hazards, sensitization, moisture reactivity, storage and protective measures. Water insolubility does not imply an absence of reaction with water. This profile provides no handling, synthesis or disposal procedure.
NOAA CAMEO reactivity and hazard reference ↗ · Health Canada assessment overview ↗
TDS: linked above for the VESTANAT IPDI US-origin example. SDS: a current matching manufacturer SDS has not yet been linked; obtain it from the supplier. This record does not yet meet our complete SDS/TDS milestone.
Origin: Evonik’s cited TDS explicitly identifies its example as US origin. This does not establish the origin of all IPDI, another supplier’s material or a purchased lot. Feedstock origin and manufacturing site have not been verified here.
Evonik product and document portal ↗
Sources checked November 1, 2026. Original identification supplied by David; identity cross-checked with OSHA and EPA. Supplier properties and application summaries use the cited Evonik document. ChemicalBook’s broader uses, production discussion, screening values and disposal text have not been adopted as verified guidance.
Archived copies are dated references. Confirm the latest document for your supplier, grade and region.
SDS · Supplier example via Fisher Scientific
02-Nov-2026 · US / English (requested source variant; confirm document)
CAS 4098-71-9 identity reference. Document product: Isophorone diisocyanate, mixture of isomers. Matches the generic substance identity, not every supplier grade. Confirm physical form, purity, stabilizers and regional applicability for your actual material.
Open archived copy ↗ · Download · Supplier source ↗TDS · Evonik
PDF footer September 9, 2025; see document revision statement · EU-origin grade · English
Separate regional supplier example. Not an SDS and not evidence of the origin or performance of another supplier’s IPDI.
Open archived copy ↗ · Download · Supplier source ↗TDS · Evonik
PDF footer September 9, 2025; revision statement January 9, 2019 · US-origin grade · English
Supplier example for generic IPDI. Does not describe every supplier’s IPDI or replace its regional SDS.
Open archived copy ↗ · Download · Supplier source ↗SDS · Evonik
Obtain current supplier revision · Choose your supply region
Supplier product/document portal; direct SDS has not yet been archived. Request the current VESTANAT IPDI SDS for your region and grade.
Supplier access / request ↗Confirm grade, composition, current availability and production location directly with the supplier.
No material-specific supplier match has been added yet.