SU432097A1 - Method of producing trimetaphosphate - Google Patents

Method of producing trimetaphosphate

Info

Publication number
SU432097A1
SU432097A1 SU1670472A SU1670472A SU432097A1 SU 432097 A1 SU432097 A1 SU 432097A1 SU 1670472 A SU1670472 A SU 1670472A SU 1670472 A SU1670472 A SU 1670472A SU 432097 A1 SU432097 A1 SU 432097A1
Authority
SU
USSR - Soviet Union
Prior art keywords
trimetaphosphate
producing
potassium
acetic acid
acetic anhydride
Prior art date
Application number
SU1670472A
Other languages
Russian (ru)
Original Assignee
Н. М. Домбровский , В. А. Коваль Черновицкий государственный университет
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Н. М. Домбровский , В. А. Коваль Черновицкий государственный университет filed Critical Н. М. Домбровский , В. А. Коваль Черновицкий государственный университет
Priority to SU1670472A priority Critical patent/SU432097A1/en
Application granted granted Critical
Publication of SU432097A1 publication Critical patent/SU432097A1/en

Links

Description

1one

Изобретение относитс  к области получени  конденсированных фосфатов, в частности к способу получени  триметафосфата кали .The invention relates to the field of producing condensed phosphates, in particular, to a method for producing potassium trimetaphosphate.

Известен способ получени  триметафосфата кали  путем нагревани  гомогенного раствора однозамещенного фосфата кали  в смеси дес тикратного избытка уксусной кислоты и уксусного ангидрида с весовым отношением 1 : 1 при 90°С в течение 24 часов.A method of producing potassium trimetaphosphate is known by heating a homogeneous solution of potassium phosphate in solution in a mixture of a ten-fold excess of acetic acid and acetic anhydride with a weight ratio of 1: 1 at 90 ° C for 24 hours.

С целью интенсификации процесса (сокращени  времени проведени  реакции до двух часов) предложено использовать твердый однозамещенный фосфат кали  и нагревание вести до температуры около 115°С.In order to intensify the process (reducing the reaction time to two hours), it has been proposed to use solid potassium phosphate one-time and heat up to a temperature of about 115 ° C.

При этом количество израсходованных уксусного ангидрида и уксусной кислоты уменьшаетс  в 6,5 раза по сравнению с известным способом.At the same time, the amount of consumed acetic anhydride and acetic acid is reduced 6.5 times compared with the known method.

Пример. Смесь 136 г Kl-bPOj, 155 мл лед ной уксусной кислоты и 155 мл уксусного ангидрида нагревают до 115°С и выдерживают смесь в течение 2 час при посто нном перемешивании . Полученный триметафосфат кали  в виде твердой фазы отфильтровывают или центрифугируют и промывают 2 раза смесью уксусной кислоты и уксусного ангидрида. Степень превращени  КН2РО4 в триметафосфат составл ет 93% в пересчете на Р2Оа.Example. A mixture of 136 g of Kl-bPOj, 155 ml of glacial acetic acid and 155 ml of acetic anhydride is heated to 115 ° C and the mixture is kept for 2 hours with constant stirring. The potassium trimetaphosphate obtained in the form of a solid is filtered off or centrifuged and washed 2 times with a mixture of acetic acid and acetic anhydride. The degree of conversion of KH2PO4 to trimetaphosphate is 93% in terms of P2Oa.

Предмет изобретени Subject invention

Способ получени  триметафосфата кали  путем дегидратации ортофосфата кали  при нагревании в среде уксусной кислоты и уксусного ангидрида, отличающийс  тем, что, с целью интенсификации нроцесса, ортофосфат кали  берут в твердом виде, а нагревание ведут до темнературы около 115°С.The method of producing potassium trimetaphosphate by dehydrating potassium orthophosphate when heated in an environment of acetic acid and acetic anhydride, characterized in that, in order to intensify the process, potassium orthophosphate is taken in solid form, and the heating is carried out to a temperature of about 115 ° C.

SU1670472A 1971-06-21 1971-06-21 Method of producing trimetaphosphate SU432097A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1670472A SU432097A1 (en) 1971-06-21 1971-06-21 Method of producing trimetaphosphate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1670472A SU432097A1 (en) 1971-06-21 1971-06-21 Method of producing trimetaphosphate

Publications (1)

Publication Number Publication Date
SU432097A1 true SU432097A1 (en) 1974-06-15

Family

ID=20479411

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1670472A SU432097A1 (en) 1971-06-21 1971-06-21 Method of producing trimetaphosphate

Country Status (1)

Country Link
SU (1) SU432097A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102897740A (en) * 2012-11-14 2013-01-30 云南莱德福科技有限公司 Production method and production equipment of potassium polymetaphosphate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102897740A (en) * 2012-11-14 2013-01-30 云南莱德福科技有限公司 Production method and production equipment of potassium polymetaphosphate
CN102897740B (en) * 2012-11-14 2015-01-14 云南莱德福科技有限公司 Production method and production equipment of potassium polymetaphosphate

Similar Documents

Publication Publication Date Title
NO155006C (en) PROCEDURE FOR THE PREPARATION OF ESTERS OF ALKANIC ACIDS BY CONVERSION OF ALFA-HALOGENIC NUMBERS.
ES8305596A1 (en) Vanadium/phosphorus mixed oxide catalyst, process for its preparation and its use.
OA07950A (en) Process for preparing a starch dispersible in boiling water.
SU432097A1 (en) Method of producing trimetaphosphate
JPS5659801A (en) New production process of cellulose acetate
ES8105304A1 (en) Process for preparing pure cyanuric acid.
US3387924A (en) Process for the manufacture of sodium tripolyphosphate with a high content of phase-i-material
SU550341A1 (en) Method for preparing non-aqueous vanadyl metaphosphate
SU457710A1 (en) The method of producing fluorescein
ES448524A1 (en) Synthesis of m-benzoyl-hydratropic acid
SU145571A1 (en) Method for producing maleic anhydride
SU472107A1 (en) The method of producing sodium trimetaphosphate
GB999253A (en) Novel unsaturated esters and a process for the preparation thereof
SU369115A1 (en) METHOD OF OBTAINING UNLIMITED KETONES AND THEIR ACETOXY DERIVATIVES
FR2566395B1 (en) PROCESS FOR OBTAINING ORGANIC COMPOUNDS WITH ALKOXYALKYLIDENE GROUP
GB831561A (en) Process for the manufacture of pyridine and quinoline carboxylic acids
SU721397A1 (en) Method of preparing 4-methyl-2-tert-butylphenol
SU472130A1 (en) Method for producing mercaptoalkyl derivatives of phosphorus acids
JPS5579382A (en) Preparation of sorbitan
WO1979000566A1 (en) Method of preparing cyanuric acid
SU1576526A1 (en) Method of obtaining n,n-dimethyl anilino-p-trifluormethylketone
SU130903A1 (en) The method of obtaining 5-amino-2,3-dihydroftalazindione-1,4 (luminol)
SU374306A1 (en)
SU415950A1 (en) Process for producing antimony pentoxide
SU535300A1 (en) The method of obtaining a mixture of urea, formaldehyde, isonicotinic acid hydrazide and products of their interaction