Description

Phenylphosphinic Acid Magnesium Salt is an organophosphorus compound with significant utility as a flame retardant synergist and thermal stabilizer. Its primary commercial value lies in enhancing the fire resistance and thermal stability of various polymer systems while maintaining favorable processing characteristics. This material is essential for manufacturers in the plastics, electronics, and construction industries seeking to meet stringent safety and performance standards for their high-temperature applications.

Application

• Flame Retardant Synergist: Used in combination with primary flame retardants (e.g., metal hydroxides, phosphorus-based compounds) in engineering plastics, polyamides (nylon), and epoxy resins to significantly improve fire resistance ratings (e.g., UL94).
• Polymer Thermal Stabilizer: Imparts enhanced thermal-oxidative stability to polymers during high-temperature processing and in end-use applications, helping to prevent degradation and maintain mechanical properties.
• Halogen-Free Flame Retardant Formulations: A key component in developing environmentally friendly, low-smoke, and non-corrosive flame retardant systems for wire & cable insulation and electronic components.
• Catalyst and Intermediate: Serves as a precursor or catalyst component in specialized organic synthesis and cross-linking reactions within the chemical industry.
• Additive for Specialty Coatings: Incorporated into intumescent and other protective coatings to improve their fire-retardant performance on structural materials.

Basic Information

Product Name	Phenylphosphinic Acid Magnesium Salt
CAS No.	25070-23-9
Molecular Formula	C12H10MgO4P2 (commonly represented as (C6H5PO2H)2Mg)
Molecular Weight	320.48 g/mol (Contact for details)
Synonyms	Magnesium phenylphosphinate; Magnesium bis(phenylphosphinate); Phenylphosphinic acid, magnesium salt; Diphenylphosphinic acid magnesium salt; Magnesium diphenylphosphinate; FR-MgPP; MgPP; Phosphinic acid, P-phenyl-, magnesium salt (1:2)
EINECS	Contact for details

Quality Control

Our Phenylphosphinic Acid Magnesium Salt is manufactured under a strict quality management system. Each 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 every shipment to guarantee traceability and quality assurance for your production processes.

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). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect product performance.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to standard
Assay (MgPP)	≥ 98.0 %
Magnesium (Mg) Content	7.2 - 7.8 %
Phosphorus (P) Content	18.5 - 19.5 %
Loss on Drying	≤ 1.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Particle Size (D50)	10 - 25 μm (or as specified)

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