210969-59-8

Upstream product

• 598-02-7 Diethyl phosphate 
• 51760-21-5 dimethyl 5-bromoisophthalate 
• 51839-15-7 5-iodo-isophthalic acid dimethyl ester 
• 122-52-1 triethyl phosphite 
• 99-31-0 5-aminoisophthalic acid 
• 51839-16-8 5-iodoisophthalic acid 
• 762-04-9 phosphonic acid diethyl ester 
• 175791-94-3 5-iodoisophthalic acid dichloride 
• 23351-91-9 5-bromoisophthalic acid 

Downstream Products

• 210969-60-1 dimethyl 5-(diisopropyloxyphosphoryl)isophthalate 
• 210969-61-2 di-n-butyl 3,5-dimethoxycarbonylphenylphosphonate 

Relevant academic research and scientific papers

A rutile-type porous zinc(ii)-phosphonocarboxylate framework: Local proton transfer and size-selected catalysis

The layered-solvothermal synthesis of zinc acetate dihydrate with 5-phosphonobenzene-1,3-dicarboxylic acid yields a three-dimensional rutile-type porous metal-organic framework, which is an anionic open-framework containing local proton transfer with hydrated protons and showing excellent size-selective properties.

Phosphonic chloride monomer, nanofiltration composite membrane and preparation method of nanofiltration composite membrane

The invention provides a phosphonic chloride monomer. The structure of the phosphonic chloride monomer is shown as a formula I, wherein R is -PO(Cl)2 or -OPO(Cl)2, R1, R2, R3,R4 and R5 are independently selected from -H, -COCl, -PO(Cl)2 or -OPO(Cl)2, and R1, R2, R3,R4 and R5 cannot be -H simultaneously. The invention further provides a nanofiltration composite membrane and a preparation method thereof. The phosphonic chloride monomer containing -PO(Cl)2 is used for a preparation process of the nanofiltration composite membrane, and the quantity of negative charges of an active layer is increased by a large quantity of -PO(OH)2 groups produced in a -PO(Cl)2 reaction process. With the adoption of a space structure of the phosphonic chloride monomer, the active layer is of a relatively loose structure, and a balance state between a sieving action and a charge repulsion action is realized finally; permeation flux is greatly increased while a higher salt removing rate is guaranteed.

Zirconium(IV)-Benzene Phosphonate Coordination Polymers: Lanthanide and Actinide Extraction and Thermal Properties

Coordination polymers with different P/(Zr + P) molar ratios were prepared by combining aqueous solutions of Zr(IV) and benzenephosphonate derivatives. 1,3,5-Benzenetrisphosphonic acid (BTP) as well as phosphonocarboxylate derivatives in which carboxylate substitutes one or two of the phosphonate groups were chosen as the building blocks. The precipitates obtained on combining the two solutions were not X-ray amorphous but rather were indicative of poorly ordered materials. Hydrothermal treatment did not alter the structure of the materials produced but did result in improved crystalline order. The use of HF as a mineralizing agent during hydrothermal synthesis resulted in the crystallization of at least three relatively crystalline phases whose structure could not be determined owing to the complexity of the diffraction patterns. Gauging from the similarity of the diffraction patterns of all the phases, the poorly ordered precipitates and crystalline materials appeared to have similar underlying structures. The BTP-based zirconium phosphonates all showed a higher selectivity for lanthanides and thorium compared with cations such as Cs+, Sr2+, and Co2+. Substitution of phosphonate groups by carboxylate groups did little to alter the pattern of selectivity implying that selectivity in the system was entirely determined by the -POH group with little influence from the -COOH groups. Samples with the highest phosphorus content showed the highest extraction efficiencies for lanthanide elements, especially the heavy lanthanides such as Dy3+ and Ho3+ with separation factors of around four with respect to La3+. In highly acid solutions (4 M HNO3) there was a pronounced variation in extraction efficiency across the lanthanide series. In situ, nonambient diffraction was performed on ZrBTP-0.8 loaded with Th, Ce, and a complex mixture of lanthanides. In all cases the crystalline Zr2P2O7 pyrophosphate phase was formed at ～800 °C demonstrating the versatility of this structure.

Guest molecule-responsive functional calcium phosphonate frameworks for tuned proton conductivity

We report the synthesis, structural characterization, and functionality (framework interconversions together with proton conductivity) of an open-framework hybrid that combines Ca2+ ions and the rigid polyfunctional ligand 5-(dihydroxyphosphory

Phenylphosphonic acid derivative and production process therefor

A dialkyl dialkoxycarbonylphenylphosphonate which is useful as a resin modifier, a process for producing the same in high yield at a low cost, and a process for producing a dicarboxyphenylphosphonic acid in high yield at a low cost are described. The