Flexible Polymer Grade Aluminum Diethylphosphinate Flame Retardant RB-6003 (TPU/TPE/EVA Use) RB-6003 Flexible Polymer Grade Aluminum Diethylphosphinate Flame Retardant for TPU/TPE/EVA Use Introduction: RB-6003 is a premium halogen-free organic phosphinate flame retardant characterized by exceptional hydrolysis resistance and chemical stability. The unique molecular structure makes the powder insoluble in water and most conventional organic solvents, providing long-term anti