Chemical Name: Triisodecyl phosphite

Synonyms: TDP; Phosphorous acid, triisodecyl ester

CAS No.: 25448-25-3

EC No.: 246-998-3

Molecular Formula: C30H63O3P

Molecular Weight: 502

Appearance: Colorless transparent liquid

Assay: Phosphorus Content 5.8%-6.6%

Item	Specifications
Appearance	Colorless transparent liquid
Chromaticity (APHA)	Less than or equal to 50
Refractive index (25 C)	1.4440 – 1.4540
Density (25 C)	0.865 – 0.885 g/cm3
Acidity Value (mgKOH/g)	Less than or equal to 0.10
Phosphorus Content	5.8% – 6.6%

Polymer Antioxidant: Acts as a phenol-free and environmentally friendly trialkyl phosphite antioxidant suitable for polyolefins, ABS, and PET.
PVC Stabilization: Serves as a high-efficiency auxiliary stabilizer and chelating agent for both hard and soft PVC, providing brighter, more uniform colors and improved transparency.
Polyurethane Protection: Used in polyurethane foam to provide oxidation protection and significantly reduce the risk of foam core burning or scorching.
Yellowing Resistance: Offers excellent anti-phenol yellowing and anti-gas fumigation (NOx) yellowing effects in coatings and foam applications.
Processing Stability: Enhances thermal stability during processing and post-application for polyurethane coatings and various polymers.
Lubricating Oils: Utilized as an additive in lubricating oils to improve oxidative stability and performance under thermal stress.

Standard Packaging: Typically available in 190kg or 200kg steel drums.

Customizable Packaging: Options for IBC tanks or smaller specialized packaging are available upon request.

Temperature: Store at room temperature in a dry and well-ventilated area.

Protection: Protect from moisture absorption and keep away from direct sunlight and heat sources.

Segregation: Keep away from fire sources, strong oxidants, and reducing agents. It is recommended to use the product within 12 months of manufacture.

Triisodecyl phosphite CAS 25448-25-3