Triphenyl phosphite

CAS: 101-02-0

Overview

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.

Physical Properties

Melting Point	25 °C
Boiling Point	360 °C
Density	1.1842 g/cm³ @ Temp: 20 °C
Flash Point	425 °F
Appearance	Water-white to pale-yellow solid or oily liquid; pleasant odor. Combustible.
Color	Clear colorless to pale yellow
Form	Liquid
Water Solubility	insoluble
Vapor Pressure	5 mm Hg ( 205 °C)
Refractive Index	n 20/D 1.59(lit.)
pH	1 (200g/l, H2O, 20℃)

Safety & Handling

Warning GHS07 GHS09 GHS08 Hazard Statements H302 Harmful if swallowed H312 Harmful in contact with skin H315 Causes skin irritation H317 May cause an allergic skin reaction H319 Causes serious eye irritation H320 Causes eye irritation H373 May causes damage to organs through prolonged or repeated exposure H400 Very toxic to aquatic life H410 Very toxic to aquatic life with long lasting effects Precautionary Statements P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P317 Get emergency medical help. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P391 Collect spillage. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P332+P317 Get emergency medical help. P333+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code	29209085
UN Number	3077
ADR Class	9
Packing Group	III
Storage Class	10 - Combustible liquids
WGK (Germany)	2

Other Names

Industries

Lubricants & Metalworking Rubber & Tire Plastics & Polymers