Description

Tri(1,2,3,4,4A,5,8,8A-Octahydro-1,4:5,8-Dimethano-2-Naphthyl)Methyl Phosphite is a specialized organophosphorus compound known for its role as a high-performance stabilizer and antioxidant. Its molecular structure provides exceptional efficacy in protecting polymers and other sensitive materials from thermal and oxidative degradation. This product is essential for formulators and manufacturers in the polymer, specialty chemical, and lubricant industries seeking to enhance the longevity and stability of their products under demanding conditions.

Application

• Primary and secondary antioxidant in polyolefins (e.g., PP, PE) and engineering plastics.
• Stabilizer for synthetic lubricants and hydraulic fluids to prevent oxidation and viscosity breakdown.
• Additive in adhesive and sealant formulations to improve thermal aging resistance.
• Stabilizing agent for elastomers and synthetic rubbers against heat and oxygen exposure.
• Intermediate in the synthesis of more complex phosphite-based antioxidant systems.
• Protective additive for coatings and resins that require long-term color and property retention.

Basic Information

Product Name	Tri(1,2,3,4,4A,5,8,8A-Octahydro-1,4:5,8-Dimethano-2-Naphthyl)Methyl Phosphite
CAS No.	71002-30-7
Molecular Formula	C43H57O3P
Molecular Weight	652.88 g/mol
Synonyms	Tris(1,2,3,4,4a,5,8,8a-octahydro-1,4:5,8-dimethanonaphthalen-2-yl) methylphosphite; Methyl tris(octahydro-4,7-methano-1H-indene-1,2-diyl) phosphite; Tris(octahydro-4,7-methano-1H-inden-1,2-diyl) methylphosphite; Phosphorous acid, methyl tris(octahydro-4,7-methano-1H-indene-1,2-diyl) ester; Antioxidant 1790; AO-1790; Tris(Nonylated Phenyl) Phosphite derivative; Hindered phosphite stabilizer.
EINECS	Contact for details

Quality Control

Our production of Tri(1,2,3,4,4A,5,8,8A-Octahydro-1,4:5,8-Dimethano-2-Naphthyl)Methyl Phosphite adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including assay, color, and acidity control, to ensure it meets precise specifications for performance as a polymer stabilizer. Certificates of Analysis (COA) documenting purity and key physical-chemical parameters are available upon request to support your quality assurance and regulatory compliance needs.

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). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent contact with atmospheric moisture, which can compromise product quality and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or flakes
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0 %
Color (Pt-Co)	≤ 50
Acidity (as H3PO4)	≤ 0.1 %
Melting Point	185 - 195 °C
Loss on Drying	≤ 0.5 %

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