- ▸ Epoxy curing agent: Hardener for flexible, water-compatible epoxy systems.
- ▸ Polyurea/polyurethane: Amine-terminated building block and chain extender.
- ▸ Adhesives & sealants: Reactive amine for flexible bond lines.
- ▸ Hydrophilic systems: Imparts water compatibility from the PEG backbone.
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 →Propylene oxide-capped polyethylene glycol diamine (Mn ≈ 400) is an amine-terminated polyether diamine built on a predominantly polyethylene-glycol backbone, which makes it water-soluble and hydrophilic. It is a low-to-mid molecular weight grade that acts as a reactive epoxy curing agent and chain extender. Established applications are in polyurea and polyurethane systems, adhesives, sealants and protective coatings.
Regulatory & registration requirements
- TSCA (US):
- REACH (EU): Not determined from public registry
- EC number: 613-824-6
TSCA Inventory flag XU: a substance exempt from reporting under the Chemical Data Reporting Rule (40 CFR 711) (EPA flag legend).
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Frequently Asked Questions
What is propylene oxide-capped polyethylene glycol diamine (Mn ≈ 400) used for?
This grade is an amine-terminated polyether diamine used as a reactive epoxy curing agent and chain extender. It serves as an amine building block in polyurea and polyurethane systems, flexible adhesives, sealants and protective coatings. It has a low-to-mid approximate average molecular weight.
Is propylene oxide-capped polyethylene glycol diamine (Mn ≈ 400) water soluble?
Yes. The predominantly polyethylene-glycol backbone makes this grade hydrophilic and water-soluble, which is why it is used where water compatibility is needed in epoxy and reactive amine systems.
How does this grade differ from lower- and higher-molecular-weight grades in the series?
Within this diamine series the grades differ by approximate average molecular weight: lower-MW grades have higher amine content, the Mn ≈ 600 grade is mid-MW, and this grade sits between them. Higher-MW grades give more flexible, lower-amine-content networks; lower-MW grades give higher crosslink density and reactivity.
What is the CAS or identity of propylene oxide-capped polyethylene glycol diamine (Mn ≈ 400)?
This grade is a polymeric, amine-terminated polyether diamine on a PEG-rich backbone, so it is specified by grade and average molecular weight rather than a single discrete CAS number. Definitive identity for any supplied lot is on its CoA and SDS, available with a quote.
What packaging is available for bulk propylene oxide-capped polyethylene glycol diamine (Mn ≈ 400)?
RawSource distributes this grade in drums, IBC totes and larger bulk volumes for industrial use. Submit your required quantity and ship-to location for current pack-size, MOQ and pricing options.
What is the REACH and TSCA regulatory status of propylene oxide-capped polyethylene glycol diamine (Mn ≈ 400)?
Propylene oxide-capped polyethylene glycol diamine (Mn ≈ 400, CAS 65605-36-9) is listed as Active on the U.S. EPA TSCA Inventory; its REACH registration status is not determined from the public ECHA registry.