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.
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