Phosphorous Acid Trioctyl Ester CAS NO 3028-88-4

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CAS No.:3028-88-4

Grade:Pharmacy Grade

Content:99.9%

Brand:Customizable

Packaging:Customizable

Description

Phosphorous Acid Trioctyl Ester is a high-purity organophosphorus compound widely utilized as a versatile intermediate and additive. Its value lies in its ability to impart specific performance characteristics, such as lubrication and stabilization, in advanced formulations. This product is essential for manufacturers in the polymer, lubricant, and specialty chemical industries seeking reliable and consistent raw materials.

Application

As a stabilizer and antioxidant in polymer and plastic formulations to enhance durability.
As a lubricant additive and extreme pressure agent in synthetic oils and greases.
As a key chemical intermediate in the synthesis of more complex organophosphorus compounds.
As a flame retardant synergist in specific material applications.
As a chelating agent and metal deactivator in specialty fluids.
In the formulation of hydraulic fluids and other functional industrial fluids.

Basic Information


Product Name	Phosphorous Acid Trioctyl Ester
CAS No.	3028-88-4
Molecular Formula	C24H51O3P
Molecular Weight	418.64 g/mol
Synonyms	Trioctyl Phosphite; Phosphorous Acid Tri-n-octyl Ester; Tri-n-octyl Phosphite; Tris(octyloxy)phosphine; Octyl Phosphite (Trioctyl ester); TOF; P(O3H5)3; Tris(1-octyl) phosphite
EINECS	221-195-1

Quality Control

Our Phosphorous Acid Trioctyl Ester is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and key parameters is provided with each shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and easily oxidized; it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Acidity (as H3PO3)	≤ 0.5%
Water Content (KF)	≤ 0.1%
Specific Gravity (20°C)	0.890 - 0.910
Refractive Index (20°C)	1.448 - 1.452