RU97108838A - METHOD FOR PRODUCING NITROLOTRIMETHYL PHOSPHONIC ACID DISATRIUM SALT - Google Patents

METHOD FOR PRODUCING NITROLOTRIMETHYL PHOSPHONIC ACID DISATRIUM SALT

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Publication number
RU97108838A
RU97108838A RU97108838/04A RU97108838A RU97108838A RU 97108838 A RU97108838 A RU 97108838A RU 97108838/04 A RU97108838/04 A RU 97108838/04A RU 97108838 A RU97108838 A RU 97108838A RU 97108838 A RU97108838 A RU 97108838A
Authority
RU
Russia
Prior art keywords
producing
salt
nitrolotrimethyl
disatrium
phosphonic acid
Prior art date
Application number
RU97108838/04A
Other languages
Russian (ru)
Other versions
RU2131433C1 (en
Inventor
Ф.С. Сарбаш
С.Г. Тарасов
Г.Л. Каштанова
А.Г. Шкуро
А.Л. Панасюк
Г.А. Масленников
Original Assignee
Открытое акционерное общество "Химпром"
Filing date
Publication date
Application filed by Открытое акционерное общество "Химпром" filed Critical Открытое акционерное общество "Химпром"
Priority to RU97108838A priority Critical patent/RU2131433C1/en
Priority claimed from RU97108838A external-priority patent/RU2131433C1/en
Publication of RU97108838A publication Critical patent/RU97108838A/en
Application granted granted Critical
Publication of RU2131433C1 publication Critical patent/RU2131433C1/en

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Claims (3)

1. Способ получения динатриевой соли нитрилотриметилфосфоновой кислоты нейтрализацией раствора НТФ кислоты гидроокисью натрия, отличающийся тем, что нейтрализацию проводят до рН 2,5-3,5.1. A method of producing a disodium salt of nitrilotrimethylphosphonic acid by neutralizing a solution of an NTF acid with sodium hydroxide, characterized in that the neutralization is carried out to a pH of 2.5-3.5. 2. Способ по п.1, отличающийся тем, что массовая доля НТФ кислоты в расчете на всю реакционную массу составляет 30-50%. 2. The method according to claim 1, characterized in that the mass fraction of NTF acid per total reaction mass is 30-50%. 3. Способ по пп. 1 и 2, отличающийся тем, что используют НТФ кислоту, полученную взаимодействием аммиачной воды, формалина и соединений трехвалентного фосфора и выделенную из реакционной среды кристаллизацией. 3. The method according to PP. 1 and 2, characterized in that they use NTP acid obtained by the interaction of ammonia water, formalin and compounds of trivalent phosphorus and isolated from the reaction medium by crystallization.
RU97108838A 1997-05-23 1997-05-23 Method of preparing solid disodium salt of nitrilotrimethylphosphonic acid RU2131433C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU97108838A RU2131433C1 (en) 1997-05-23 1997-05-23 Method of preparing solid disodium salt of nitrilotrimethylphosphonic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU97108838A RU2131433C1 (en) 1997-05-23 1997-05-23 Method of preparing solid disodium salt of nitrilotrimethylphosphonic acid

Publications (2)

Publication Number Publication Date
RU97108838A true RU97108838A (en) 1999-04-27
RU2131433C1 RU2131433C1 (en) 1999-06-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU97108838A RU2131433C1 (en) 1997-05-23 1997-05-23 Method of preparing solid disodium salt of nitrilotrimethylphosphonic acid

Country Status (1)

Country Link
RU (1) RU2131433C1 (en)

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