Description

Tributyl Phosphite CAS NO 102-85-2 is a clear, colorless to pale yellow organophosphorus compound widely used as a versatile intermediate and stabilizer. Its primary commercial value lies in its ability to function as an effective antioxidant and chelating agent, protecting materials from degradation. This product is essential for manufacturers in the polymer, lubricant, and agrochemical industries seeking to enhance product stability and performance.

Application

• Polymer Stabilizer: Acts as a secondary antioxidant and metal deactivator in polyolefins (e.g., polyethylene, polypropylene) and PVC to prevent thermal and oxidative degradation during processing and service life.
• Lubricant & Fuel Additive: Used as an anti-wear agent and antioxidant in synthetic lubricants, greases, and industrial oils to extend equipment life and reduce sludge formation.
• Chemical Intermediate: Serves as a key building block in the synthesis of other organophosphorus compounds, including pesticides, flame retardants, and plasticizers.
• Epoxy Resin Modifier: Employed to modify the properties of epoxy resin systems, improving flexibility and adhesion.
• Rubber Industry: Functions as a non-staining stabilizer in synthetic rubber production to prevent premature aging.
• Metal Extraction & Chelation: Utilized in hydrometallurgical processes for the selective extraction and separation of metal ions.

Basic Information

Product Name	Tributyl Phosphite
CAS No.	102-85-2
Molecular Formula	C12H27O3P
Molecular Weight	250.31 g/mol
Synonyms	Phosphorous Acid Tributyl Ester; Tributoxyphosphine; Butyl Phosphite; TBP; Tris(butyloxy)phosphine; P(OCH2CH2CH2CH3)3; Phosphorous Acid Tris(n-butyl Ester); n-Tributyl Phosphite
EINECS	203-061-3

Quality Control

Our Tributyl Phosphite is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC) for purity and identity confirmation, to ensure it meets precise specifications for industrial applications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Due to its nature as an easily oxidized substance, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation. Keep container tightly sealed when not in use to minimize moisture absorption and oxidation.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Refractive Index (n20D)	1.432 - 1.436
Density (20°C)	0.924 - 0.932 g/mL
Acidity (as H3PO4)	≤ 0.1 %
Water Content (KF)	≤ 0.1 %

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