PROCESS FOR MANUFACTURING TETRASODIUM PYROPHOSPHATE
PROCESS FOR MANUFACTURING TETRASODIUM PYROPHOSPHATE A process is provided for manufacturing tetra-sodium pyrophosphate from sodium tripolyphosphate and a sodium salt capable of forming sodium carbonate on calcination. A compound capable of forming sodium carbonate is added to adjust the mol ratio to...
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Format: | Patent |
Sprache: | eng ; fre |
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Zusammenfassung: | PROCESS FOR MANUFACTURING TETRASODIUM PYROPHOSPHATE A process is provided for manufacturing tetra-sodium pyrophosphate from sodium tripolyphosphate and a sodium salt capable of forming sodium carbonate on calcination. A compound capable of forming sodium carbonate is added to adjust the mol ratio to about 2, the mixture is milled and heated to from 300°C to 700°C. |
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