System: 2,5-piperazinedione/urea/water
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| 1) 2,5-piperazinedione |
| DECHEMA ID | 1721 |
| Formula | C4H6N2O2 |
| Synonym | glycine anhydride |
| Synonym | aminoacetic acid anhydride |
| Synonym | 2,5-dioxopiperazine |
| Synonym | cyclo(glycylglycine) |
| Synonym | piperazine-2,5-dione |
| Synonym | 2,5-diketopiperazine |
| Synonym | 1,4-diazinane-2,5-dione |
| InChi-Key | BXRNXXXXHLBUKK-UHFFFAOYSA-N |
| Registry No. | 106-57-0 |
| 2) urea |
| DECHEMA ID | 32041 |
| Formula | CH4N2O |
| Synonym | carbonyl diamine |
| Synonym | carbamimidic acid |
| Synonym | carbamide resin |
| Synonym | carbonyl diamide |
| Synonym | isourea |
| Synonym | ureaphil |
| Synonym | carbamide |
| Synonym | pseudourea |
| InChi-Key | XSQUKJJJFZCRTK-UHFFFAOYSA-N |
| Registry No. | 57-13-6 |
| 3) water |
| DECHEMA ID | 41137 |
| Formula | H2O |
| Synonym | refrigerant 718 |
| Synonym | ice |
| Synonym | dihydrogen oxide |
| Synonym | hydrogen oxide |
| InChi-Key | XLYOFNOQVPJJNP-UHFFFAOYSA-N |
| Registry No. | 7732-18-5 |
Available physical property data:
| Property | Phase | No. of tables | No. of lines | Data |
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| heat capacity (cp) | liquid | 2 | 86 | View |
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| specific volume, infinite dilution | liquid | 1 | 9 | View |
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| volume | liquid | 1 | 77 | View |
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