Description

p-[[3,5-Bis(tert-Butyl)-4-Hydroxyphenyl]Methyl]Phosphonic Acid Monoethyl Ester Nickel Salt is a high-performance organometallic complex and a specialized nickel-based antioxidant. This compound is engineered to provide exceptional thermal and oxidative stability in demanding polymer systems. It is primarily utilized by formulators and manufacturers in the plastics and synthetic fiber industries seeking to enhance the longevity and performance of their products under high-temperature processing and end-use conditions.

Application

• Primary stabilizer and antioxidant for high-temperature engineering plastics such as polyamides (nylon), polyesters (PET, PBT), and polyolefins.
• Critical additive in the production of synthetic fibers to prevent thermal degradation during melt spinning and extrusion processes.
• Used in polymer masterbatches and concentrates to ensure consistent stabilization performance in compounded materials.
• Enhances the long-term heat aging (LTHA) resistance of automotive components, electrical connectors, and industrial parts.
• Acts as a synergistic co-stabilizer in combination with primary phenolic antioxidants and phosphites for superior polymer protection.
• Employed in adhesives and specialty coatings formulations that require resistance to oxidative degradation.

Basic Information

Item	Details
Product Name	p-[[3,5-Bis(tert-Butyl)-4-Hydroxyphenyl]Methyl]Phosphonic Acid Monoethyl Ester Nickel Salt
CAS No.	40451-46-5
Molecular Formula	C22H38NiO5P
Molecular Weight	487.21 g/mol (approx.)
Synonyms	Nickel bis[monoethyl(3,5-di-tert-butyl-4-hydroxybenzyl)phosphonate]; Irganox 1425; Irganox 1425WL; Bis(monoethyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate) nickel; Nickel 3,5-di-tert-butyl-4-hydroxybenzylphosphonate monoethyl ester; Antioxidant 1425; Nickel complex of ethyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate
EINECS	254-987-1

Quality Control

Our production of p-[[3,5-Bis(tert-Butyl)-4-Hydroxyphenyl]Methyl]Phosphonic Acid Monoethyl Ester Nickel Salt adheres to stringent quality management protocols. Every batch is analyzed to ensure it meets precise specifications for identity, purity, and metal content. A comprehensive Certificate of Analysis (COA) detailing assay, nickel content, melting point, and impurity profiles is provided with each shipment to guarantee consistency and performance for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after initial opening to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Light green to green powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Nickel Content	11.8 - 12.2 %
Melting Point	180 - 190 °C
Loss on Drying	≤ 0.5 %
Ash Content	≤ 0.3 %

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