Triphenyl Phosphate TPP
| HS Code | 492463 |
| Chemical Formula | C18H15O4P |
| Molar Mass | 326.28 g/mol |
| Appearance | Colorless to pale yellow, viscous liquid |
| Odor | Faint, characteristic odor |
| Solubility In Water | Insoluble |
| Solubility In Organic Solvents | Soluble in many organic solvents like ethanol, benzene |
| Boiling Point | 410 - 418 °C |
| Melting Point | 48 - 50 °C |
| Density | 1.268 g/cm³ (at 20 °C) |
| Flash Point | 223 °C |
| Vapor Pressure | Very low at room temperature |
As an accredited Triphenyl Phosphate TPP factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | To package Triphenyl Phosphate TPP, industrial grade uses cardboard barrels lined with plastic bags, and the barrel lid is nailed after the bag mouth is tied tightly; reagent grade is placed in white wide-mouthed glass bottles with glass stoppers, wrapped with soft paper outside the bottles, and then placed in wooden boxes with partitions to prevent crushing and moisture absorption. |
| Storage | Store Triphenyl Phosphate TPP in a dry and well-ventilated place. The walls of the warehouse should be kept away from moisture. The floor should be raised with wooden frames and kept away from water to prevent moisture. Do not store it near heat, strong alkali or strong oxidants, as it may change after long-term storage. Open the box regularly to check whether the crystals are agglomerated. If there are traces of moisture, spread it out to dry to keep its quality unchanged. |
| Shipping | Transport Triphenyl Phosphate TPP in ordinary trucks, pad straw between barrels to prevent shock, cover with oilcloth in rainy days, and lift and place gently during loading and unloading. If the packaging is damaged, it must be transferred to a new container in time to prevent the Triphenyl Phosphate TPP from scattering. |
Competitive Triphenyl Phosphate TPP prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615380400285 or mail to sales2@liwei-chem.com.
We will respond to you as soon as possible.
Tel: +8615380400285
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Historical Development
In ancient times, plant lipids were occasionally used in making incense and lacquering. In recent times, plastics and rubber have become popular, and flame retardants and plasticizers are needed. Craftsmen then developed aromatic phosphates, and Triphenyl Phosphate TPP was born to meet the needs. At first, the process was simple and the purity was not high. After a hundred years of improvement, it can now be refined and used as a supplement to polymer materials.
Product Overview
Triphenyl Phosphate TPP is a white crystalline powder, odorless and tasteless, difficult to dissolve in water, easily soluble in organic solvents, with a high melting point, and has both flame retardant and plasticizing properties. It has stable chemical properties and is mostly used in plastics, rubbers, and coatings to improve the fire resistance and flexibility of materials.
Physical & Chemical Properties
Triphenyl Phosphate TPP has a density greater than water, is brittle and easy to grind, has a melting point of about 48°C, can be decomposed when heated to high temperatures, and releases flame-retardant gas. It is insoluble in cold water, non-flammable when exposed to open flames, and has no obvious irritation to the skin.
Technical Specifications & Labeling
The standard of Triphenyl Phosphate TPP is purity ≥99%, melting point range 47-50℃, and the full name Triphenyl Phosphate TPP must be written on the label, with purity, melting point and storage method attached.
Preparation Method
Triphenyl Phosphate TPP is usually prepared with phenol and phosphorus oxychloride as raw materials, and a catalyst is added to heat the reaction in a reactor. After neutralization, water washing, crystallization and drying, Triphenyl Phosphate TPP is obtained. The process needs temperature control to prevent the formation of by-products.
Chemical Reactions & Modifications
Triphenyl Phosphate TPP will decompose into phosphoric acid and phenol derivatives when exposed to strong heat. It can undergo hydrolysis reaction when eutectic with strong alkali to produce phenol salt and phosphate. It has stable chemical properties at room temperature.
Synonyms & Product Names
Triphenyl Phosphate TPP is also known as "triphenyl phosphate", but in commercial transactions and technical documents, the full name Triphenyl Phosphate TPP must be used to indicate accuracy.
Safety & Operational Standards
When handling Triphenyl Phosphate TPP, cotton gloves should be worn to prevent the powder from entering the eyes. If it accidentally enters the eyes, rinse with clean water immediately; wash hands after work, and store it away from food raw materials to prevent accidental mixing.
Application Area
Triphenyl Phosphate TPP is mostly used as a flame retardant plasticizer for plastics such as polyvinyl chloride and cellulose acetate. It is also used in synthetic rubber and coatings to improve their heat resistance and fire resistance. It is particularly widely used in insulating materials.
Research & Development
Those who study Triphenyl Phosphate TPP today are committed to optimizing the preparation process, reducing production costs, and reducing pollutant emissions. At the same time, it explores its application in new composite materials and environmentally friendly flame retardant materials, and improves performance through modification to meet the needs of green industrial development.
Toxicity Research
Triphenyl Phosphate TPP has low toxicity. Long-term contact can cause dry skin. Ingestion of a small amount is harmless, but a large amount will irritate the stomach and intestines. Therefore, it needs to be properly stored to avoid contact with children.
Future Prospects
As the demand for polymer materials increases and fire protection standards become stricter, the demand for Triphenyl Phosphate TPP will steadily increase, and its process will become more environmentally friendly, and it may be expanded to high-end material fields such as medical and electronics.
Where to Buy Triphenyl Phosphate TPP in China?
As a trusted Triphenyl Phosphate TPP manufacturer, we deliver:
Factory-Direct Value: Competitive pricing with no middleman markups, tailored for bulk orders and project-scale requirements.
Technical Excellence: Precision-engineered solutions backed by R&D expertise, from formulation to end-to-end delivery.
Whether you need industrial-grade quantities or specialized customizations, our team ensures reliability at every stage—from initial specification to post-delivery support.
As a leading Triphenyl Phosphate TPP supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
What process is required for the preparation of Triphenyl Phosphate TPP?
This material is made by using trichloroethyl phosphate and phenol as raw materials, placing them in an enameled reactor in a ratio of 1:3, and adding pyridine as a catalyst, the amount of which is 5% of the total raw materials. Heat it to 120 degrees, so that the two react to generate Triphenyl Phosphate TPP and hydrogen chloride, which is discharged through a condenser and absorbed by water, and the reaction continues for four hours. The process is like melting wax, and it needs to be stirred continuously to prevent local overheating and coking. Stop the fire when the reaction liquid becomes viscous. After cooling, white crystals are precipitated, filtered and washed, and recrystallized with ethanol to obtain TPP with a purity of 99%. This method is like polishing jade, and repeated polishing will produce a crystal product with white crystals and a melting point of 49 degrees.
What are the magical uses of Triphenyl Phosphate TPP in the plastics industry?
This product is a good flame retardant plasticizer. When added to polyvinyl chloride plastic, it can make the product reach UL94 V-0 flame retardancy, maintain softness, and not crack at minus ten degrees. In ABS resin, adding 15% can reduce the smoke density by 30% during combustion, and there is no dripping phenomenon. It has good compatibility with resin and is not easy to migrate, so there is no frost on the plastic surface and it remains smooth after long-term use. It is more environmentally friendly than brominated flame retardants and complies with the EU RoHS standard, so it is used in sensitive fields such as children's toys and electronic casings. Its flame retardant mechanism is gas phase flame retardant, capturing combustion free radicals and extinguishing the flame, which is a fire prevention tool for the plastic industry.
What are the characteristics of Triphenyl Phosphate TPP physical properties?
This product is a white crystalline powder, odorless and tasteless, with a melting point of 49 degrees. It is solid at room temperature and melts into liquid when heated to 50 degrees. It is insoluble in water, easily soluble in organic solvents such as benzene and acetone, and slightly soluble in ethanol. The density is about 1.21 g/cm3, the texture is fine, the fluidity is good, and it is easy to disperse when mixed with plastic powder. It has good thermal stability and does not decompose below 250 degrees, so it can be used for engineering plastics processed at high temperatures. Its refractive index is 1.552, and the plastic made has good light transmittance and does not affect the color of the product, so it is often used in transparent plastics.
What are the advantages of Triphenyl Phosphate TPP compared with other flame retardants?
Compared with Tributyl Phosphate TBP, Triphenyl Phosphate TPP has higher flame retardant efficiency, and the same effect can be achieved with 10% less addition. Compared with tricresyl phosphate, it has lower toxicity and higher LD50 value, and is suitable for packaging materials in contact with food. In polycarbonate, its compatibility is better than Triphenyl Phosphate TPP, it does not affect the mechanical properties of the material, and the impact strength is retained by more than 90%. It has low volatility, remains in the plastic for a long time, and the flame retardant effect does not decay, so it has a longer service life and is the first choice for long-term flame retardancy.
What precautions should be taken for storage and processing of Triphenyl Phosphate TPP?
This product needs to be stored in cardboard barrels lined with plastic bags, sealed and moisture-proof, and stored in a cool and dry warehouse at a temperature not exceeding 30 degrees to prevent caking. It needs to be heated and melted during processing, and the temperature should be controlled between 60 and 80 degrees, not exceeding 100 degrees, to prevent decomposition and discoloration. It should be stored separately from oxidants to prevent reactions. If it is accidentally damp and caked, it can be dried in an oven at 40 degrees. It can still be used after crushing without affecting performance. Its dust is slightly irritating, and a mask must be worn during operation to avoid inhalation. If you wear protective clothing to prevent contamination, you must be careful.
