513-08-6

Usage

Uses

Used in Flame Retardancy:
Tripropyl phosphate is used as a flame retardant in the plastics and textiles industry to reduce the risk of fire and improve the safety of these materials.
Used in Plasticizers:
In the plastics industry, tripropyl phosphate is used as a plasticizer to increase the flexibility, workability, and durability of materials, making them more suitable for various applications.
Used in Analytical Chemistry:
Tripropyl phosphate is used as an external standard in the sampling of organophosphate triesters in indoor air, employing solid phase extraction cartridges for accurate analysis and detection of these compounds.

InChI:InChI=1/C9H21O4P/c1-4-7-11-14(10,12-8-5-2)13-9-6-3/h4-9H2,1-3H3

Upstream product

• 71-23-8 propan-1-ol 
• 923-99-9 tri-n-propyl phosphite 
• 2375-33-9 fluorochloronitromethane 
• 54722-86-0 dipropyl phosphite 
• 1809-21-8 di-n-propyl phosphonate 
• 7803-51-2 phosphan 
• 7647-01-0 hydrogenchloride 
• 80937-33-3 oxygen 
• 12019-57-7 copper phosphide 
• 682-01-9 tetrapropoxysilane 
• 3871-20-3 tris(p-nitrophenyl)phosphate 
• 2510-89-6 dipropyl chlorophosphate 
• 6819-41-6 sodium n-propoxide 

Downstream Products

• 1804-93-9 dipropylphosphate 
• 599-91-7 propyl tosylate 
• 1623-06-9 Phosphoric acid monopropyl ester 
• 120642-12-8 N-phenyl-N-propylbenzamide 
• 35666-61-6 2-methoxy-N,N-dipropylaniline 
• 125927-27-7 Bis<(N,N-dipropylamino)phenyl> sulfone 
• 622-85-5 propoxybenzene 
• 2217-07-4 N,N-dipropylaniline 

Relevant academic research and scientific papers

METHOD FOR PRODUCING PHOSPHOESTER COMPOUND

PROBLEM TO BE SOLVED: To provide a method whereby, a phosphate compound selected from the group consisting of orthophosphoric acid, phosphonic acid, phosphinic acid, and anhydrides of them is used as raw material and, by one stage reaction, a corresponding phosphoester compound is produced. SOLUTION: To an aqueous solution of a phosphate compound, added is an organic silane or siloxane compound having an alkoxy group or an aryloxy group, and the mixture is subjected to a heating reaction, thereby producing a corresponding phosphoester compound without requiring a catalyst. SELECTED DRAWING: None COPYRIGHT: (C)2021,JPOandINPIT

Kinetics and adsorption calculations: insights into the MgO-catalyzed detoxification of simulants of organophosphorus biocides

We report the targeted decomposition of the organophosphate methyl paraoxon by means of its transesterification with 1-propanol catalyzed by magnesium oxide. Catalyst characterization by energy dispersive X-ray fluorescence (EDXRF), nitrogen adsorption/desorption measurements (BET and BJH methods), and temperature programmed desorption of CO2(CO2-TPD) showed that the employed MgO presents properties favorable for the methyl paraoxon adsorption and transesterification to occur. A thorough kinetic investigation showed that rate enhancements up to 3 × 106-fold can be achieved in comparison with the spontaneous propanolysis of the substrate, and that the material can be used in additional cycles without loss of catalytic activity, with the catalyst recovery achieved through a simple washing procedure. Energies for adsorption of 1-propanol and methyl paraoxon onto a MgO model surface were obtained by density functional theory calculations, which showed that the latter displays a stronger affinity for the catalyst surface, and that the reaction should proceed with methyl paraoxon and 1-propanol molecules juxtapositioned at adjacent Mg2+sites, with nucleophilic and electrophilic centersca.2.4 ? away from each other. Additionally, MgO also promoted rate enhancements up to 5 × 104-fold in the propanolysis of a further range of representative phosphate triesters, and in most of the cases the final transesterified products are trialkyl phosphates structurally related to a family of flame-retardants. The results thus provide insights into the development of novel systems for the targeted conversion of organophosphorus compounds into value-added products by employing simple, highly efficient, and low-cost metal oxide catalysts.

Method for synthesis of n-propyl phosphoric acid

The invention provides a preparation method for n-propyl phosphate. The preparation method comprises the following steps: (1) reacting tri-n-propyl phosphite with bromopropane under the catalysis of potassium iodide to obtain n-propyl di-n-propyl phosphate, wherein the reaction temperature is 50-70 DEG C; (2) reacting n-propyl di-n-propyl phosphate with trimethylsilyl chloride at the circumfluence temperature in an aprotic solvent under the catalysis of potassium bromide or potassium iodide to obtain n-propyl phosphate. The preparation method is easy to get the adopted raw materials, low in toxicity, less in by-products, easy to purify, low in cost and suitable for industrialized production. The reaction route of the preparation method is as follows: (as is shown in the Specification).

Method of synthesizing alkyl phosphate

The invention relates to a method of synthesizing alkyl phosphate. The method includes: in the process of synthesizing alkyl phosphate, using inert substance to mix with reactant alcohol; dropwise adding phosphorus oxychloride at low temperature, allowing reaction at normal temperature for a period of time, and rising temperature for reaction; using alkali for neutralizing, washing with water, and distilling to remove low-boiling-point solvent and reactant; depressurizing and distilling to obtain high-purity alkyl phosphate. Due to existence of the third inert substance, reaction is enabled to be milder, and high yield is realized; a lot of generated hydrogen chloride is removed in a gaseous mode, so that alkali consumption is reduced and production cost is lowered.

Electrocatalytic eco-efficient functionalization of white phosphorus

The novel eco-efficient methods to transform white phosphorus into the esters of phosphoric, phosphorous and phosphonic acids, tertiary phosphines and other organophosphorus compounds under conditions of electrochemical catalysis were elaborated. The mechanism of these processes was investigated using the method of cyclic voltammetry and preparative electrolysis.

Synthesis of mixed alkylphosphites and alkylphosphates

Some mixed phosphites having two different alkyl chain were obtained as forerunners for mixed phosphates Mixed dialkyl phosphates were obtained in good yields (40-80%) by phase transfer catalysis in liquid-liquid sistem, starting from different dialkyl phosphites and aliphatic alcohols. The reaction conditions were optimized in order to obtain good yields in phosphites and phosphates respectively. Compounds were analyzed by IR, P31-NMR.

Oxidative alkoxylation of zinc phosphide in alcoholic solutions of copper(II) chloride

Oxidative alkoxylation of Zn3P2 with the formation of valuable phosphoric and phosphorous acid esters occurred at a high rate and with a high selectivity in alcoholic solutions of CuCl2 under the action of oxygen at 30-60°C. Depending on the nature of the alcohol, two products were formed, namely, trialkyl phosphates (RO)3PO and dialkyl phosphites (RO)2HPO. Water favored the formation of dialkyl phosphates (RO)2(HO)PO. The kinetics and mechanism of the new catalytic reaction were studied, and the optimal conditions for conducting this reaction were found. The reaction proceeded in a topochemical mode by a separate redox mechanism.

Absolute viscosity and density of trisubstituted phosphoric esters

This paper presents measurements on the absolute viscosity (η) and density (ρ) of trisubstituted phosphoric esters which are useful in understanding their flow mechanism necessary for accessing their role as plasticizers. The effect of chain length and branching has been examined on the η and ρ trends. From η data, by using the Vogel-Tammann-Fulchur (VTF) equation, the VTF temperature (To) has been obtained which also represents the ideal glass transition temperature. To is related to the flexibility of the molecules. It is observed that To initially decreases with molecular weight, reaches a minimum, and increases thereafter. The initial decrease in To has been attributed to the enhanced flexibility of the phosphate esters. Reversal of flexibility with relative molar mass beyond 400 is due to the gentle collision of the arms of the trisubstituted phosphoric esters. This has been further corroborated from the molar mass exponent as exhibited in the η-molar mass plot. The isomeric effect on η has also been investigated in tricresyl phosphates, hitherto for the first time. The ortho isomer has highest η among the isomers. The para isomer was found to have lowest To and hence highest flexibility compared to the ortho and meta isomers.

Synthesis of Trialkyl Phosphates from White Phosphorus

A new method was proposed for preparing trialkyl phosphates directly from white phosphorus by its electrolysis in a mixture of acetonitrile, alcohol, and water with tetraethylammonium iodide as supporting electrolyte. To increase the amount of the product synthesized in the unit volume of the electrolyte solution and the productivity of the process, phosphorus and water are added to the electrolyte in portions, which allows synthesis of up to 1 mol of trialkyl phosphate in 1 1 of the electrolyte solution.

Electrochemical Oxidation of Metal Dialkyl Phosphites and Their Reaction with Halogens

Electrochemical oxidation of sodium dialkyl phosphites with alkyl radicals of normal structure leads to formation of tetraalkyl pyrophosphites as the main products, while electrochemical oxidation of litium dialkyl phosphites and sodium salts with branched alkyl radicals yields tetraalkyl hypophosphates. The reaction of metal dialkyl phosphites with halogens leads to analogous results.