Description

Phosphorous Acid Phenylbis(8-Methylnonyl) Ester is a specialized organophosphorus compound valued for its role as a high-performance intermediate and additive. This chemical is particularly significant for its ability to impart specific functional properties in advanced material formulations. It is primarily sought by manufacturers in the polymer, lubricant, and specialty chemical industries for applications requiring thermal stability and tailored reactivity.

Application

• As a key intermediate in the synthesis of advanced organophosphorus ligands and flame retardants.
• Functioning as a stabilizer and antioxidant in high-temperature polymer and lubricant formulations.
• Utilized as a plasticizer and viscosity modifier in specialty elastomers and adhesives.
• Employed in the research and development of catalysts for organic synthesis and polymerization processes.
• Serving as a surface treatment agent or additive in functional coatings and fluids.
• Acting as a chelating agent or metal deactivator in industrial process streams.

Basic Information

Product Name	Phosphorous Acid Phenylbis(8-Methylnonyl) Ester
CAS No.	4169-13-5
Molecular Formula	C34H63O3P
Molecular Weight	550.84 g/mol
Synonyms	Phenylbis(8-methylnonyl) Phosphite; Bis(8-methylnonyl) Phenyl Phosphite; Phosphorous Acid, Phenylbis(8-methylnonyl) Ester; Phenyldi(8-methylnonyl) Phosphite; Irgafos® OPH (potential trade name); Antioxidant OPH; Phenyl Diisodecyl Phosphite (related isomer); P,DINP Phosphite
EINECS	Contact for details

Quality Control

Our production of Phosphorous Acid Phenylbis(8-Methylnonyl) Ester adheres to a stringent quality management system to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analytical testing, including assay, identity confirmation, and impurity profiling. A Certificate of Analysis (COA) detailing all relevant specifications is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (typically 15-25°C). This material is moisture-sensitive; keep the container tightly sealed when not in use to prevent degradation.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Acidity (as H3PO3)	≤ 0.5%
Water Content (Karl Fischer)	≤ 0.1%
Color (APHA)	≤ 50
Refractive Index (n20D)	1.460 - 1.470
Density (20°C)	0.920 - 0.940 g/mL

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