System: metaphosphoric acid (HPO3) sodium salt/diphosphoric acid tetrasodium salt
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| 1) metaphosphoric acid (HPO3) sodium salt |
| DECHEMA ID | 1175 |
| Formula | NaO3P |
| Synonym | sodium metaphosphate |
| Synonym | sodium metaphosphate (NaPO3) |
| InChi-Key | AQMNWCRSESPIJM-UHFFFAOYSA-M |
| Registry No. | 10361-03-2 |
| 2) diphosphoric acid tetrasodium salt |
| DECHEMA ID | 41100 |
| Formula | Na4O7P2 |
| Synonym | tetrasodium diphosphate |
| Synonym | tetrasodium pyrophosphate |
| Synonym | sodium pyrophosphate |
| Synonym | sodium phosphate (Na4P2O7) |
| InChi-Key | FQENQNTWSFEDLI-UHFFFAOYSA-J |
| Registry No. | 7722-88-5 |
Available physical property data:
| Property | Phase | No. of tables | No. of lines | Data |
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| eutectic | - | 1 | 1 | View |
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| fusion temperature | - | 1 | 1 | View |
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| peritectic | - | 4 | 14 | View |
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