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441805

Sigma-Aldrich

Tris(nonylphenyl) phosphite

Synonym(s):

Tri(monononylphenyl) phosphite

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About This Item

Linear Formula:
(C9H19C6H4O)3P
CAS Number:
26523-78-4
Molecular Weight:
689.00
EC Number:
247-759-6
MDL number:
MFCD00015301
UNSPSC Code:
12162002
PubChem Substance ID:
24867705
NACRES:
NA.23

form

liquid

Quality Level

100

refractive index

n20/D 1.528 (lit.)

bp

>360 °C (lit.)

density

0.99 g/mL at 25 °C (lit.)

SMILES string

CCCCCCCCCc1ccccc1OP(Oc2ccccc2CCCCCCCCC)Oc3ccccc3CCCCCCCCC

InChI

1S/C45H69O3P/c1-4-7-10-13-16-19-22-31-40-34-25-28-37-43(40)46-49(47-44-38-29-26-35-41(44)32-23-20-17-14-11-8-5-2)48-45-39-30-27-36-42(45)33-24-21-18-15-12-9-6-3/h25-30,34-39H,4-24,31-33H2,1-3H3

InChI key

WGKLOLBTFWFKOD-UHFFFAOYSA-N

General description

Tris(nonylphenyl) phosphite (TNPP) is an antioxidant that is majorly used as a stabilizer to improve the performance of polyethylene by decomposing the hydroperoxides. It can also be used to enhance the thermal stability by extending the polymeric chains.

Application

TNPP in combination with irganox is used to protect polyamide 6 (PA6) from oxidative degradation during the preparation of flame retardant nanocomposites. TNPP can be used as a stabilizer that prevents the molecular weight reduction and increases the tensile strength of the composite. It can also be used as a chain extender to improve the polymeric viscosity during the melt-blending of poly(hydroxybutyrate-co-hydroxyvalerate) based clay nanocomposites which find potential application as packaging materials.

Signal Word

Danger

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Repr. 2 - Skin Irrit. 2 - Skin Sens. 1

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

404.6 °F - closed cup

Flash Point(C)

207 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH SVHC Candidate List

CAS No.

EU REACH Annex XVII (Restriction List)

CAS No.

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Certificates of Analysis (COA)

Lot/Batch Number
MKCS7134
MKCP9270
MKCJ6603
MKBW3609V
MKBL4725V

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LC-MS/MS analytical procedure to quantify tris (nonylphenyl) phosphite, as a source of the endocrine disruptors 4-nonylphenols, in food packaging materials
Mottier P, et al.
Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment, 31(5), 962-972 (2014)
Bio-based solution-cast blend films based on polylactic acid and polyhydroxybutyrate: Influence of pyromellitic dianhydride as chain extender on the morphology, dispersibility, and crystallinity
Dawin TP, et al.
Progress in Organic Coatings, 119(5), 23-30 (2018)
On the use of tris (nonylphenyl) phosphite as a chain extender in melt-blended poly (hydroxybutyrate-co-hydroxyvalerate)/clay nanocomposites: Morphology, thermal stability, and mechanical properties
Gonzalez?Ausejo J, et al.
Journal of Applied Polymer Science, 133(2), 118-129 (2016)
Halloysite nanotubes loaded with liquid organophosphate for enhanced flame retardancy and mechanical properties of polyamide 6
Boonkongkaew M and Sirisinha K
Journal of materials science & technology, 119(5), 1-13 (2018)
Effects of chain-extending stabilizer on bioplastic poly (lactic acid)/polyamide blends compatibilized by reactive extrusion
Gug J, et al.
Polymer Degradation and Stability, 153(5), 118-129 (2018)
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