24630-66-8

Usage

InChI:InChI=1/C9H21O4P/c1-3-5-7-12-14(11,9-10)13-8-6-4-2/h10H,3-9H2,1-2H3

Upstream product

• 1809-19-4 dibutyl hydrogen phosphite 
• 50-00-0 formaldehyd 
• 102-85-2 tri-n-butyl phosphite 

Downstream Products

• 34833-70-0 benzenesulfonyloxymethyl-phosphonic acid dibutyl ester 

Relevant academic research and scientific papers

Synthesis of organophosphorus ligands with a central oxygen atom and their applications in solvent extraction

Various structurally related glycolamide compounds were synthesised and evaluated by solvent extraction experiments for the separation of rare earth elements (REEs) from aqueous acid solutions using dodecane as the diluent. We describe herein the full synthesis of a family of bifunctional ligands with a central oxygen and focus our investigation on the effects of structural modification on the extraction efficiencies. The combination of an amide, a P[dbnd]O donor site, and a central oxygen in such a glycolamide ligand showed interesting extraction properties for heavy rare earth elements from phosphoric acid solutions.

USE OF NOVEL COMPOUNDS FOR SELECTIVELY EXTRACTING RARE EARTHS FROM AQUEOUS SOLUTIONS INCLUDING PHOSPHORIC ACID AND ASSOCIATED EXTRACTION METHOD

The invention relates to the use, as an extraction agent for extracting at least one rare earth from an aqueous phase including phosphoric acid, of at least one compound of the following general formula (I): where n is an integer equal to 0, 1 or 2,R1 and R2 are H or an aliphatic hydrocarbon group,one of R3 and R4 has the following formula (II): where R5 and R6 are a hydrocarbon, hydroxyl or alkoxyl group, and the other one of R3 and R4 has one of the following formulas (II′) and (III): where R5′ and R6′ are a hydrocarbon, hydroxyl or alkoxyl group, and R7 and R8 are H or an aliphatic hydrocarbon group. The invention also relates to a method for recovering at least one rare earth using said compound, as well as to specific compounds as such.

AMIDATED PHOSPHORIC ACID ESTER COMPOUND, EXTRACTANT, AND EXTRACTION METHOD

PROBLEM TO BE SOLVED: To provide useful new compounds, particularly a compound that can be used as an extractant for extracting a valuable metal, such as a rare metal and a noble metal, or a toxic metal having high toxicity.SOLUTION: A compound represented by the general formula (1) or a salt thereof can be used as an extractant for extracting a metal element. (In the formula (1), R1, R2 and R3 represent hydrocarbon groups identical to or different from each other, provided that the total number of carbon atoms in the R1, R2 and R3 hydrocarbon groups is from 8 to 48.)SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPOandINPIT

The effect of phenoxy oxygen atoms on extremely high extraction ability and less separation efficiency of trivalent rare earth elements with tetraphosphonic acid derivative of calix[4]arene

A cone confomational p-t-octylcalix[4]arene with four methylenephosphonic acids at the lower rim as well as its monomeric analog have been synthesized as a new extraction reagent to investigate the extraction behavior of the nine trivalent rare earth elements: Y, La, Pr, Nd, Sm, Eu, Gd, Ho and Er. The new calix[4]arene exhibited significantly higher extraction capacity than not only the monomeric derivative and the commercial extraction reagent, 2-ethylhexyl hydrogen 2-ethylhexylphosphonate, but also the cone conformational calix[4]arene extractants employed in our previous work, composed of a tetrapropylenephosphonic acid with a longer spacer, a tetraphosphonic acid at the upper rim, and tetraacetic acid at the lower rim. A dependence on the pH was observed for the new extractant in the highly acidic region, and the extraction took place via a simple ion-exchange mechanism. Using slope analysis, the stoichiometries of tetrameric and monomeric extractants to rare earth metal ions were determined to be 2:1 and 3:1, respectively. Using the proposed extraction equations, extraction equilibrium constants and separation factors were estimated. The extremely high extraction ability and moderate separation efficiency were attributed to the chelating effect of the phosphonic acid and the phenoxy oxygen atom. The effect of the phenoxy oxygen atom on extraction ability and separation efficiency of calix[4]arene derivatives was found to be significant. Springer Science+Business Media Dordrecht 2012.

Synthesis and evaluation of ligands with mixed amide and phosphonate, phosphinoxide, and phosphonothioate sites for An(III)/Ln(III) extraction

Various organophosphorus ligands with a combination of different donor sites were synthesized and evaluated by solvent extraction studies for the complexation of Am(iii)/Eu(iii). Among the ligands with a glycolamide backbone, those with mixed amide and P=O donor sites and a central oxygen or nitrogen atom showed a reasonable extraction of Am(iii) and Eu(iii). Ligands with a central oxygen atom exhibited selectivity towards Eu(iii), and those with a central nitrogen atom towards Am(iii). Ligands with P=S donor sites and a glycolamide backbone did not show any reasonable extraction. Amongst the ligands with a malonamide backbone, high extraction efficiency was observed for the ligand with electron-rich substituents on phosphorus, however, with almost no discrimination between Am(iii) and Eu(iii). The extraction efficiency of different ligands towards Eu(iii) was confirmed by microcalorimetry.

ORGANOPHOSPHORUS COMPOUND HAVING PHOSPHATE-PHOSPHONATE BOND, AND FLAME-RETARDANT POLYESTER FIBER AND FLAME-RETARDANT POLYURETHANE RESIN COMPOSITION EACH CONTAINING THE SAME

The present invention provides a phosphate-phosphonate compound which has a low volatility and a high phosphorus content, does not exert adverse influences on the physical properties of a product containing the phosphate-phosphonate compound as a material, and is recyclable and causes substantially no environmental load since a halogen atom such as a chlorine atom or a bromine atom is not included. A phosphorus compound containing a phosphate-phosphonate bond in one molecule and having a specific structure has a high flame retarding property. By using a phosphate-phosphonate compound as a flame retarding agent for a polyurethane or for a polyester, preferable plasticity and flame retarding property are obtained. Such a flame retardant agent exerts substantially no adverse influences on the physical properties of a polyurethane foam or a polyester fiber.

TARGETING CHELANTS AND CHELATES

Novel chelants and other compounds, and compositions thereof are provided, that are useful for detection and treatment of cancer and other abnormal and disease-state cells and tissues.