Реакция #1374731

ord-ad8ad2459f9846f5978bd2088315e930

Уравнение реакции

[Ca+2].[Cl-].[Cl-]
calcium chloride
O=P([O-])([O-])OP(=O)([O-])[O-].[Na+].[Na+].[Na+].[Na+]
tetrasodium pyrophosphate
→
O.O.O.O.O=P([O-])([O-])OP(=O)([O-])O.[Ca+2].[Na+]
calcium sodium pyrophosphate tetrahydrate

Реактанты

[Ca+2].[Cl-].[Cl-]
calcium chloride
O=P([O-])([O-])OP(=O)([O-])[O-].[Na+].[Na+].[Na+].[Na+]
tetrasodium pyrophosphate

Реагенты

Нет

Условия реакции

Подробные условия
See reaction.notes.procedure_details.

Методика

A 25 weight percent aqueous solution of calcium chloride is added to a 15 weight percent aqueous solution of tetrasodium pyrophosphate in a suitable vessel until the pH reaches 7. The acicular crystals of calcium sodium pyrophosphate tetrahydrate are formed. The crystals are filtered, washed thoroughly, and dried at 60° C. The calcium sodium pyrophosphate tetrahydrate is then heated at a temperature within the range of 175° to 200° C for a period of 60 minutes until 3.2 moles of water of hydration is removed. The dehydrated solids were then ground. The structure of the material is now amorphous as determined by X-ray diffraction.

Источник

DOI: 10.6084/m9.figshare.5104873.v1Патент: US03985675uspto-grants-1976_10