Italmatch acquires Aubin Group: read the news →

Masteret® 73450

Italmatch Chemicals Markets / Masteret® 73450
Masteret® 73450

Masteret® 73450

Product identification and description

Masteret® 73450 is a nonhalogenated flame retardant liquid masterbatch based on stabilised and microencapsulated red phosphorus and castor oil in the form of thixotropic pasty dispersion.

Key features

  • Very efficient flame retardant additive for its high Phosphorous content
  • Effective as such or in combination with other flame retardants
  • Available in a safe to handle form to avoid the hazards associated with red phosphorus powder handling and processing
  • Especially designed for polyurethane


Masteret® 73450 is mainly used to flame proofing polyurethane articles, to meet the most demanding flame retardant standards. Combination with metal hydroxides (ATH) or amorphous silica are possible. Dosage ranges from 5% to 14% according to specific standard and formulation.

Chemical and Physical properties (1)

Appearance: Viscous liquid
Colour: Dark red
Odour: Light
Density (23°C): ≈ 1,4 gr/cc
Phosphorous: ≈ 50%
Hydroxyl number (mg KOH/gr): ≈ 80-85


(1) Typical properties; not to be constructed as specifications

  • If you need further assistance regarding Masteret® products, contact us at:

[javascript protected email address]

Other Applications