Description

Phosgard C 22-R is a specialized organophosphorus compound, identified by CAS NO 4351-70-6. This product is valued for its role as a reactive flame retardant and modifier, offering enhanced thermal stability and compatibility within polymer matrices. It is essential for manufacturers in the plastics, coatings, and specialty chemical industries seeking to improve the fire resistance and performance characteristics of their materials.

Application

• As a reactive flame retardant intermediate in the synthesis of epoxy resins and polyurethanes.
• Modifier for engineering plastics to enhance thermal stability and flame retardancy.
• Component in intumescent coating systems for fire protection of structural materials.
• Additive in adhesive and sealant formulations requiring improved fire safety profiles.
• Used in the production of circuit boards and other electronic components for flame retardancy.
• Intermediate for creating specialized phosphorus-containing polymers with tailored properties.
• Research and development of novel flame-retardant materials and composites.

Basic Information

Product Name	Phosgard C 22-R
CAS No.	4351-70-6
Molecular Formula	C22H24O4P2
Molecular Weight	422.36 g/mol
Synonyms	1,4-Phenylenebis(diphenyl phosphate); BDP; Resorcinol bis(diphenyl phosphate); RDP; Fyrolflex RDP; Phosflex RDP; CR-733S; Phosphoric acid, 1,4-phenylenetetraphenyl ester
EINECS	224-416-7

Quality Control

Our Phosgard C 22-R is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, color, and key physical properties. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance and regulatory compliance needs.

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). Keep away from heat sources and incompatible materials such as strong bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Phosphorus Content	14.6 - 15.0 %
Acidity (as H3PO4)	≤ 0.1 %
Color (APHA)	≤ 100
Moisture (KF)	≤ 0.1 %
Viscosity @ 25°C	Contact for details

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