PL404382A1 - Method for preparing a neutral sodium pyrophosphate - Google Patents
Method for preparing a neutral sodium pyrophosphateInfo
- Publication number
- PL404382A1 PL404382A1 PL404382A PL40438213A PL404382A1 PL 404382 A1 PL404382 A1 PL 404382A1 PL 404382 A PL404382 A PL 404382A PL 40438213 A PL40438213 A PL 40438213A PL 404382 A1 PL404382 A1 PL 404382A1
- Authority
- PL
- Poland
- Prior art keywords
- sodium pyrophosphate
- neutral sodium
- preparing
- neutral
- na4p2o7
- Prior art date
Links
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
Sposób otrzymywania obojętnego pirofosforanu sodu zawierającego co najmniej 85% wagowych difosforanu tetrasodu Na4P2O7, polega na tym, że do stężonego kwasu fosforowego ekstrakcyjnego lub termicznego, dodaje się stopniowo, przy ciągłym mieszaniu i rozcieraniu, sodę amoniakalną lub węglan sodu, przy stosunku molowym Na/P 1,77 - 2,0 by otrzymać produkt o sypkiej konsystencji, po czym otrzymaną mieszaninę kalcynuje się w piecach obrotowych. Przedmiotem wynalazku jest Także obojętny pirofosforan sodu otrzymany sposobem według wynalazku.The method of obtaining neutral sodium pyrophosphate containing at least 85% by weight of tetrasodium diphosphate Na4P2O7 consists in the fact that to the concentrated extractive or thermal phosphoric acid, soda ash or sodium carbonate is gradually added, with constant stirring and grinding, at the molar ratio Na/P 1.77 - 2.0 to obtain a free-flowing product, after which the resulting mixture is calcined in rotary kilns. The invention also relates to neutral sodium pyrophosphate obtained by the process according to the invention.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL404382A PL229403B1 (en) | 2013-06-19 | 2013-06-19 | Method for preparing a neutral sodium pyrophosphate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL404382A PL229403B1 (en) | 2013-06-19 | 2013-06-19 | Method for preparing a neutral sodium pyrophosphate |
Publications (2)
Publication Number | Publication Date |
---|---|
PL404382A1 true PL404382A1 (en) | 2014-12-22 |
PL229403B1 PL229403B1 (en) | 2018-07-31 |
Family
ID=52106904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PL404382A PL229403B1 (en) | 2013-06-19 | 2013-06-19 | Method for preparing a neutral sodium pyrophosphate |
Country Status (1)
Country | Link |
---|---|
PL (1) | PL229403B1 (en) |
-
2013
- 2013-06-19 PL PL404382A patent/PL229403B1/en unknown
Also Published As
Publication number | Publication date |
---|---|
PL229403B1 (en) | 2018-07-31 |
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