SATURATED METHYLENE DIPHENYL DIISOCYANATE- ▸ Non-yellowing PU: Isocyanate for light-stable polyurethane products.
- ▸ Flexible coatings: Used in flexible polyurethane coating systems.
- ▸ PU elastomers: Component of polyurethane elastomers.
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.
Request SDS →Dicyclohexylmethane-4,4'-diisocyanate (CAS 5124-30-1), the hydrogenated analog of MDI, is a cycloaliphatic diisocyanate used to make light-stable polyurethanes. Industry references record its primary use in flexible coatings and polyurethane elastomers and in urethane products that do not yellow on light exposure. Supplied as a bulk isocyanate intermediate.
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 225-863-2
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Solutions Using This Product
Process-solution guides on this site that specify this chemistry:
- Polyaspartic & Aliphatic Polyurea Raw Materials (Coatings & Construction)
Frequently Asked Questions
What is H12MDI?
H12MDI is dicyclohexylmethane-4,4'-diisocyanate (CAS 5124-30-1, C15H22N2O2), the hydrogenated (cycloaliphatic) analog of MDI. It is used to make light-stable polyurethanes that do not yellow on light exposure. RawSource supplies it as a bulk isocyanate intermediate.
What is H12MDI used for?
It is used as the isocyanate component in light-stable, non-yellowing polyurethane products, including flexible polyurethane coating systems and polyurethane elastomers. Its cycloaliphatic structure gives the resulting PU resistance to light-induced yellowing.
What is methylene bis(4-cyclohexyl isocyanate)?
That is another name for the same material — dicyclohexylmethane-4,4'-diisocyanate, or H12MDI (CAS 5124-30-1). It is the saturated, ring-hydrogenated counterpart of aromatic MDI.
What is the UN number and HS code for H12MDI?
It ships under UN 2206 (1,1-methylene bis(4-isocyanatocyclohexane)) and classifies under HS 2929.10 (isocyanates). Transport requirements follow the SDS, which RawSource supplies with every order; confirm tariff treatment with your customs broker.
What bulk packaging is available for H12MDI?
H12MDI is supplied as a bulk isocyanate intermediate in moisture-protected drums and totes. MOQ, lead time, and pricing are quote-based — request a bulk quote with your target volume; an SDS and CoA accompany the order and the SDS should be reviewed before handling.
What is the REACH and TSCA regulatory status of Dicyclohexylmethane Diisocyanate (H12MDI, Hydrogenated MDI)?
Dicyclohexylmethane Diisocyanate (H12MDI, Hydrogenated MDI) (CAS 5124-30-1) is subject to U.S. TSCA Inventory requirements; supplying it into the EU requires valid REACH registration ((EC) No 1907/2006). RawSource cannot verify a third-party supplier's registrations — buyers should require documented TSCA and REACH compliance for their jurisdiction and volume (EC 225-863-2).