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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:
Molecular Weight:
689.00
EC Number:
MDL number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.23

form

liquid

Quality Level

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

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