Firemaster 508 is a low viscosity blend of PHT4-Diol and phosphate ester. The low viscosity blend offers improved process handling and storage characteristics versus neat PHT4-DIOL while maintaining its effectiveness as a flame retardant for Class 1 and Class 2 rigid polyurethane foam.

Product Features

• Low viscosity (pours at room temperature)
• Fast bulk tank transfer versus neat PHT4-Diol
• Higher solubility versus neat PHT4-Diol
• Exhibits excellent compatibility with a broad range of commercial polyols and blowing agents.