Dimethyl n-Propylphosphonate (DMPP)

Name: Dimethyl n-Propylphosphonate (DMPP)
Brand: Chemzip
Price: 1 USD
Availability: InStock

CAS Number: 18755-43-6

Dimethyl n-propylphosphonate (DMPP) is an organophosphonate flame retardant with superior hydrolytic stability over phosphate esters, used in polyurethane foam, epoxy resins, and coatings. The phosphonate P–C bond resists hydrolysis in humid environments, making it valuable for applications requiring long-term FR durability. DMPP provides primarily gas-phase flame inhibition through phosphorus radical scavenging, and its miscibility with polyols makes it easy to incorporate into two-component polyurethane systems without additional solvent.

Request Sample Get Best Price WhatsApp

Technical Specifications

appearance	Colorless transparent liquid
purity (GC, %)	≥97
water solubility	Miscible
boiling point (°C)	194–196
phosphorus content (%)	20–21
density (20°C, g/cm³)	1.04–1.06

Applications

Rigid and flexible polyurethane foam requiring hydrolytically stable FR additive
Epoxy coating systems for structures in humid or immersed environments
Polyester and vinyl ester resin flame retardant with moisture resistance
Fire-resistant hydraulic and industrial process fluid component
Two-component polyurethane adhesive and sealant FR additive

Key Features

P–C bond hydrolytic stability superior to phosphate esters maintains FR efficacy in humid service environments
High phosphorus content (20–21%) provides efficient gas-phase flame inhibition per unit weight
Water-miscible liquid allows direct blending with polyols without compatibility issues
Lower environmental persistence concerns than aromatic phosphate esters due to aliphatic backbone