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2 111 920

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IPC

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Application

97111836/25, 1997-07-09

(22)

Actual filing date

1997-07-09

(45)

Published

1998-05-27

(72)

Inventor

Nikitin A.B.Kesojan G.A.Dobroskokina N.D.Lere-Pland P.A.Spiridonov S.G.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD FOR PRODUCTION OF NONA-HYDROUS SALT OF TRISODIUM PYROPHOSPHATE Russian patent published in 1998 - IPC

Abstract RU 2111920 C1

FIELD: production of trisodium pyrophosphate as its nona-hydrous salt, food industry. SUBSTANCE: disodium pyrophosphate and tetrasodium pyrophosphate are mixed and then are dissolved in water at 30-50 C. Thus prepared solution is filtered to separate insoluble precipitate. Crystallization takes place by cooling solution, temperature drop being 3-5 C/min. The process is carried out till crystals sized not less than 50 mcm are obtained, then finished product is separated. EFFECT: commercial product of high grade quality is prepared.

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RU 2 111 920 C1

Authors

Nikitin A.B.

Kesojan G.A.

Dobroskokina N.D.

Lere-Pland P.A.

Spiridonov S.G.

Dates

1998-05-27—Published

1997-07-09—Filed

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