INTRODUCTION

Triphenyl phosphite (TPP) is an organophos-phorous compound and is a colorless, viscous liquid with high boiling point. It possesses a characteristic, delicate fragrance. Its uses can be found largely in polymers. Besides, it participates as a reactant in organic syntheses.

Manufacture

The triphenyl ester of phosphorous acid is produced by reaction of phenol with phosphorous trichloride, hydrochloric acid being the by-product.

SynonymsTriphenoxyphosphine
Phosphorous acid triphenyl ester
CAS no.101-02-0
EINECS no.202-908-4
Molecular formula(C6H5O)3P
Molecular weight310.29
Structure

Applications

in Polymers
As an antioxidant and a stabilizer in PVC, PP, PS, epoxy, and ABS resins. TPP imparts excellent color stability and heat stability
Improves color and clarity of alkyd resins
Used in process of emulsion polymerization
in Organic Syntheses
Consumed in some reactions that convert alcohol to acid chloride
As peptide coupling agent
In manufacture of pesticides and optical brighteners
RM for production of trimethyl phosphine
RM for synthesis of other organic phosphites such as diphenyl isodecyl phosphite and diphenyl iso-octyl phosphite
Other Applications
As chelating agent
As additive in lubricants and adhesives
As flame retardant

SPECIFICATIONS

TestUnitSpecifications
AppearanceClear Liquid
Acid ValueMg KOH/gMax 0.1
Specific Gravity @ 25°C1.175-1.189
Refractive Index @ 25°C1.5800 -1.5950
ColorAPHAMax 50
Free Phenol by GC%Max 1.0
Triphenyl phosphite by GC%Min 99.0
Phosphorus%9.7-10.1

STORAGE
The product is stored at ambient temperature.

PACKING
225 kg UN-approved HDPE drum.

REACH Status
TPP offered by ExSyn is registered under EU REACH regulations.

ExSyn offers TPP on commercial scales and welcomes enquiries. No matter the quantity you need, our exceptional quality and service will make ExSyn your supplier of choice! If you need any additional information or SDS, please get in touch with us.

More Products
In focus: N-Acetyl-L-Aspartic Acid
Products in focus · 27/09/2022

N-Acetyl-L-aspartic acid, abbreviated as NAA, is second most abundant molecule in nervous systems after amino acid glutamate. It is synthesized in brain from aspartic acid and acetyl co-enzyme A. It also acts as nutrient.

READ MORE
In focus: Pivaloyl Chloride
Products in focus · 20/09/2022

Pivaloyl chloride is a colorless to light yellow liquid with a pungent mustard-like odor. It hydrolyses in the presence of water.

READ MORE
In focus: 1,3-Dimethyl-2-imidazolidinone
Products in focus · 13/09/2022

1,3-Dimethyl-2-imidazolidinone, popular as DMI solvent, is a high boiling aprotic polar molecule. Apart from being a common solvent in derivative GC, it finds applications in diverse industrial verticals.

READ MORE
In focus: Iron Powder, Electrolytic
Products in focus · 06/09/2022

Iron, Electrolytic, occurs as an amorphous, lusterless, gray-black powder. It is elemental iron obtained by electrode deposition. It is stable in dry air.

READ MORE
In focus: Hot Melt Polyamide Adhesive – Indomide™ 6136
Products in focus · 30/08/2022

Hot melt polyamide adhesives are 100% non-volatile, thermoplastic adhesive resins. These are heat-resistance hot melt adhesive, suitable for bonding materials hard to bond together.

READ MORE
In focus: Boron Citrate
Products in focus · 23/08/2022

Boron citrate, usually called “boron”, is a micronutrient with diverse and vitally important roles in metabolism that render it necessary for plant, animal, and human health, and, possibly, as recent research suggests, for the evolution of life on Earth.

READ MORE
In focus: Ethone
Products in focus · 16/08/2022

Ethone, chemically 1-(p-methoxyphenyl)-1-penten-3-one, is a flavor and fragrance ingredient. Available in white to yellow crystalline powder form, it bears sweet and anisolic taste.

READ MORE
In focus: Ammoniated Mercury
Products in focus · 09/08/2022

Mercuric ammonium chloride, also called white precipitate, is a heavy white odourless amorphous compound used in external treatment of skin diseases and to destroy lice.

READ MORE
In focus: Stannic Chloride Pentahydrate
Products in focus · 02/08/2022

Stannic chloride pentahydrate is a tin source compatible with chlorides. Biologically, it induces a slight inhibition in the catalytic activity of the enzyme horse liver alcohol dehydrogenase (HLADH).

READ MORE