Tri Nonyl Phenyl Phosphite TNPP CAS 26523-78-4

Tris(nonylphenyl) phosphite is an organophosphorus compound with the chemical formula (C₉H₁₉C₆H₄O)₃P. It appears as a colorless to pale yellow liquid with a mild, characteristic odor. Insoluble in water, but soluble in organic solvents such as toluene, xylene, acetone, and chlorinated hydrocarbons. Commonly used as a secondary antioxidant and heat stabilizer in polymer processing, particularly in polyolefins (such as polypropylene and polyethylene), styrenics, and elastomers. Also functions as a chelating agent for metal ions, a peroxide decomposer, and a processing stabilizer to prevent polymer degradation during high-temperature manufacturing. Stable under normal storage conditions but sensitive to hydrolysis and oxidation; should be stored in tightly sealed containers away from moisture and air.

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Model:
26523-78-4
Brand:
Boss Chemical
Code:
26523-78-4

Product Description

Tris(nonylphenyl) phosphite Basic information
Product Name:	Tris(nonylphenyl) phosphite
CAS:	26523-78-4
MF:	C45H69O3P
MW:	689
EINECS:	247-759-6
Mol File:	26523-78-4.mol
Tris(nonylphenyl) phosphite Chemical Properties
Boiling point	>360 °C(lit.)
density	0.99 g/mL at 25 °C(lit.)
refractive index	n20/D 1.528(lit.)
Fp	>230 °F
solubility	Benzene (Slightly), Chloroform (Slightly), Methanol (Slightly)
form	Thick Oil
Specific Gravity	0.979～0.9870.990
color	Colourless
Odor	mild odor
Sensitive	Moisture Sensitive
Cosmetics Ingredients Functions	ANTIOXIDANT
InChIKey	WGKLOLBTFWFKOD-UHFFFAOYSA-N
SMILES	P(OC1=CC=CC=C1CCCCCCCCC)(OC1C=CC=CC=1CCCCCCCCC)OC1=CC=CC=C1CCCCCCCCC
CAS DataBase Reference	26523-78-4(CAS DataBase Reference)
EPA Substance Registry System	Phenol, nonyl-, phosphite (3:1) (26523-78-4)

Product name	Tris(nonylphenyl) phosphite
Cas no	26523-78-4
Item	Specification
Appearance	Colorless or light-yellow transparent viscous liquid
density , g/ml(25℃)	0.979—0.992
viscosity mPa.s(25℃)	2500—6000
refractive index (n25D )	1.5230—1.5280
Acid value (mgKOH/g)	≤0.3
hue（APHA）	≤250

Tri Nonyl Phenyl Phosphite CAS 26523-78-4 Synthetic rubber antioxidant Heat stabilizer Epoxy resin antioxidant Unsaturated polyester antioxidant SBS thermoplastic elastomer antioxidant Adhesive heat stabilizer PVC chelating stabilizer Rubber latex stabilizer

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Chemical detection methods

Spectroscopic Analysis Methods

Ultraviolet-Vis Spectrophotometry (UV-Vis)
Infrared Spectroscopy (IR/FTIR)
Atomic Absorption Spectroscopy (AAS)
X-ray Fluorescence Spectroscopy (XRF)
Nuclear Magnetic Resonance Spectroscopy (NMR)

Chromatographic Analysis

Gas Chromatography (GC)
High Performance Liquid Chromatography (HPLC)
Ion Chromatography (IC)
Thin Layer Chromatography (TLC)

Mass Spectrometry Analysis

GC-MS / LC-MS/MS: Qualitative and Quantitative Analysis
ICP-MS: Trace Metal Elements (ppb Level)
TOF-MS: Precise Molecular Weight Determination

Electrochemical analysis methods

Polypotentiometric methods
Conductivity methods
Polarographic methods / Voltammetric methods
Coulometric analysis

Thermal Analysis Methods

Thermogravimetric Analysis (TGA)
Differential Scanning Calorimetry (DSC)
Differential Thermal Analysis (DTA)

Classical wet chemical analysis

Titration analysis
Gravity analysis