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.
| Synonyms | Triphenoxyphosphine Phosphorous acid triphenyl ester |
| CAS no. | 101-02-0 |
| EINECS no. | 202-908-4 |
| Molecular formula | (C6H5O)3P |
| Molecular weight | 310.29 |
| 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
| Test | Unit | Specifications |
|---|---|---|
| Appearance | – | Clear Liquid |
| Acid Value | Mg KOH/g | Max 0.1 |
| Specific Gravity @ 25°C | – | 1.175-1.189 |
| Refractive Index @ 25°C | – | 1.5800 -1.5950 |
| Color | APHA | Max 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.
Imidazolidinyl urea is a widely used antimicrobial preservative in the cosmetic and personal care industry. It is a formaldehyde-releasing compound that effectively inhibits the growth of bacteria, yeast, and molds, thereby extending the shelf life of formulations. Due to its broad-spectrum efficacy and cost-effectiveness, it is commonly used in rinse-off and leave-on products within regulated concentration limits.
Phosphorodiamidites are a unique class of phosphorus-based compounds characterized by one P–O bond and two P–N moieties. 2-Cyanoethyl tetraisopropylphosphorodiamidite plays a crucial role in solid-phase oligonucleotide synthesis. Beyond their application as synthetic precursors for oligonucleotides, phosphorodiamidites have also been reported as valuable starting materials for the synthesis of industrially relevant polymers and flame-resistant materials, including adhesives, coatings, and laminates.
Ferric maltol is an oral iron complex composed of ferric iron (Fe³⁺) chelated with maltol, designed to improve iron absorption while reducing common gastrointestinal side effects associated with traditional iron salts. It is primarily used in the management of iron deficiency with better tolerability.
Phosphatidylcholine (PC) is one of the most important phospholipids derived from soya lecithin and represents a key structural component of cell membranes. Phosphatidylcholine 90% refers to a highly purified grade where the PC content is enriched to around 90% through specialized extraction and purification steps.
Indorez® Kota Resin is a modified non self-cured phenolic resin, it can increase rubber adhesion to steel, polyester, rayon, nylon, aramid and other fabric cord. It’s an adhesive agent, acts as methylene acceptor, can 100% replace resorcinol and resorcinol resins in resorcinol- formaldehyde-silica, enhance adhesion between rubber and reinforcing materials.
Glyceryl Stearate Citrate (GSC) is a plant-derived, biodegradable emulsifier commonly used in cosmetics and personal-care products. It functions primarily as an anionic oil-in-water (O/W) emulsifier, helping blend oils and water into smooth, stable creams and lotions. Its natural origin and gentle profile make it popular in eco-certified, organic, and sensitive-skin formulations.
DL-Serine is a racemic mixture of both the D- and L-forms of the amino acid serine, which is a polar, nonessential amino acid. It is an α-amino acid characterized by its hydroxyl-containing side chain, which enables it to take part in numerous biochemical reactions and synthetic processes. It functions as a pivotal intermediate in the biosynthesis of amino acids, including glycine and cysteine, underscoring its essential role in cellular metabolism. Moreover, it constitutes a critical pharmaceutical intermediate for the synthesis of a broad spectrum of therapeutic agents and drug candidates.
Ethyl vinyl ether is a reactive, flammable, volatile liquid with a strong ether-like odor. Featuring two conjugated functional groups—an ether and an alkene—this molecule act as important building block, especially in polymer synthesis. Its applications span multiple industrial sectors, including semiconductors, coatings, inks, fragrances, adhesives, paints, oil viscosity modifiers and pharmaceuticals, with promising potential as a dietary supplement.
Peppermint (Mentha piperita) is a common herb, also known as a hybrid mint. Its main components are oxygenated monoterpenes: alcohols, esters and ketones. Peppermint oleoresin microencapsulated powder is a white to off-white coloured powder produced from the seeds of the plant. In order to protect and maintain the stability of peppermint oil, microencapsulation is carried out through process optimization using the coacervation technique. This technique helps limit the loss and degradation of flavours and aromas during processing and storage. It offers versatile applications across multiple industries — from food and beverages to pharmaceuticals, cosmetics, and textiles.