Description

Bis[Thiobis(p-Isopropylphenyl)] Bis(Dihydrogen Phosphate) is a specialized organophosphorus compound that functions as a high-performance additive and intermediate. Its molecular structure, featuring both thiobisphenol and phosphate ester functionalities, provides unique properties for enhancing material stability and performance. This chemical is essential for manufacturers in the polymer, lubricant, and specialty chemical industries seeking to improve product durability and resistance to degradation.

Application

• Polymer Stabilizer: Acts as a synergistic antioxidant and secondary stabilizer in polyolefins (e.g., PP, PE) and engineering plastics to prevent thermal and oxidative degradation during processing and service life.
• Lubricant & Grease Additive: Serves as an anti-wear and extreme pressure (EP) additive, as well as an antioxidant, in synthetic lubricants and industrial greases.
• Flame Retardant Synergist: Used as a component in flame-retardant formulations for plastics and textiles, often in combination with halogenated or phosphorus-based flame retardants.
• Chemical Intermediate: Employed in the synthesis of more complex phosphate esters and other specialty chemicals with tailored properties.
• Adhesive & Sealant Formulation: Imparts improved thermal stability and aging resistance to high-performance adhesives and sealants.

Basic Information

Product Name	Bis[Thiobis(p-Isopropylphenyl)] Bis(Dihydrogen Phosphate)
CAS No.	34513-96-7
Molecular Formula	C30H40O8P2S2
Molecular Weight	654.71 g/mol
Synonyms	4,4'-Thiobis(2-isopropylphenol) bis(dihydrogen phosphate); Bis(4-isopropylphenyl) sulfide bis(phosphate); Phosphoric acid, bis[4,4'-thiobis(2-isopropylphenyl)] ester; Antioxidant 300; Irgafos 168 related phosphate; Thiobisphenol phosphate ester; p-Isopropylphenol sulfide phosphate; AO-300
EINECS	Contact for details

Quality Control

Our production of Bis[Thiobis(p-Isopropylphenyl)] Bis(Dihydrogen Phosphate) adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including assay, identification, and impurity profiling, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) documenting purity, physical properties, and test results are available upon request.

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). Due to its hygroscopic nature, the container must be kept sealed to minimize exposure to atmospheric moisture. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or flakes
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals (as Pb)	≤ 10 ppm

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