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Triphenyl phosphite

CAS Number
101-02-0
EC Number
202-908-4
Chemical Formula
C18H15O3P
Molecular Weight
310.3 g/mol

Description

Triphenyl phosphite (CAS 101-02-0 ), also sold under the trade name Advance TPP, is an organophosphorus ester used as a stabilizer and processing aid across polymer, rubber, and lubricant manufacturing. TPP functions primarily as a secondary antioxidant and co-stabilizer, intercepting hydroperoxides during thermal processing to protect finished materials from degradation. In plastics compounding, it is incorporated into PVC and polyolefins. The additive is used in engineering resins to suppress discoloration and extend service life during high-temperature processing. Rubber and tire manufacturers use it as a processing stabilizer and mild plasticizer. This chemical improves flow and reduces premature vulcanization side reactions in various rubber applications. Lubricant formulators add TPP as an antioxidant component in industrial oils and metalworking fluids. Oxidative stability under load is a key formulation requirement where this product excels. It also acts as an intermediate in the synthesis of other phosphorus-based flame retardants and specialty additives. The material is supplied as a clear to pale yellow liquid at ambient conditions. Standard commercial grades include technical and industrial purity levels, typically specified at 99%+ purity with defined acid value. Color limits are strictly monitored to ensure consistency across different production batches. Packaging is available in drums and IBC containers suited to bulk industrial procurement for global distribution. Contact us for supply of Triphenyl phosphite Request Quote

Other Names (Synonyms)

Phosphorous acid, triphenyl ester | Advance TPP | Phenyl phosphite | Tris(phenoxy)phosphine | Sumilizer TPP-R | Phenyl phosphite ((C6H5O)3P) | Phosclere T 36 | TPP

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point25 °C
Boiling Point360 °C
Density1.1842 g/cm³ @ Temp: 20 °C
Flash Point425 °F
AppearanceWater-white to pale-yellow solid or oily liquid
pleasant odor. Combustible.
ColorClear colorless to pale yellow
FormLiquid
Water Solubilityinsoluble
Vapor Pressure5 mm Hg ( 205 °C)
Refractive Indexn 20/D 1.59(lit.)
pH1 (200g/l, H2O, 20℃)

Safety & Handling

Warning
GHS07· IrritantGHS09· EnvironmentGHS08· Health Hazard

Hazard Statements

H302Harmful if swallowed
H312Harmful in contact with skin
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H320Causes eye irritation
H373May causes damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary Statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P272Contaminated work clothing should not be allowed out of the workplace.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P317Get emergency medical help.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P391Collect spillage.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P317Get emergency medical help.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29209085
UN Number3077
ADR Class9
Packing GroupIII
Storage Class10 - Combustible liquids
WGK (Germany)2