Description

Zinc Bis[Phenylphosphinate] is an organophosphorus metal complex with the CAS registry number 25070-22-8, valued for its role as a versatile flame retardant and smoke suppressant additive. This compound is particularly effective in enhancing the fire safety performance of various polymer systems without compromising their mechanical properties. It is a critical material for manufacturers in the plastics, textiles, and coatings industries seeking to meet stringent fire safety regulations.

Application

• Flame Retardant for Engineering Plastics: Used in polyamides (nylon), polyesters (PBT, PET), and polycarbonates to achieve UL94 V-0 ratings.
• Smoke Suppressant in PVC and Wire & Cable Compounds: Reduces smoke density and toxic gas emission during combustion.
• Additive for Synthetic Fibers and Textiles: Imparts durable flame retardancy to fabrics and non-wovens.
• Component in Intumescent Fire-Retardant Coatings: Acts as a synergist in coatings for steel structures and wood.
• Stabilizer and Synergist in Halogen-Free Flame Retardant Formulations: Enhances the performance of other phosphorus- and nitrogen-based retardants.
• Catalyst or Precursor in Specialty Chemical Synthesis: Used in organic synthesis and as a precursor for other metal phosphinates.

Basic Information

Product Name	Zinc Bis[Phenylphosphinate]
CAS No.	25070-22-8
Molecular Formula	C24H20O4P2Zn
Molecular Weight	508.73 g/mol
Synonyms	Zinc Diphenylphosphinate; Zinc Phenylphosphinate; Bis(phenylphosphinato)zinc; Phenylphosphinic Acid Zinc Salt; Zinc Bis(phenylphosphonate) (common misnomer); Zn(P(O)Ph2)2; Flame Retardant ZnPP; Zinc(II) bis(phenylphosphinate)
EINECS	Contact for details

Quality Control

Our Zinc Bis[Phenylphosphinate] is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, performance, and compliance with relevant industry specifications for flame retardant additives. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept away from moisture and incompatible materials such as strong acids and strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to reference spectrum
Assay (Zn content)	Min. 12.5%
Purity (HPLC)	Min. 98.0%
Loss on Drying	Max. 1.0%
Heavy Metals (as Pb)	Max. 20 ppm
Particle Size (D50)	< 10 μm (or as specified)
pH (5% suspension)	6.0 - 8.0

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.