Colorless transparent sheet inclined department rhombus crystals,
relative density 1.52, in the air, and easily easy to lose five molecules formed seven water gesso item (Na2HPO4. 7H2O). Soluble in water, not soluble in alcohol. Solution a micro alkaline reaction (0.11N solution PH about 9.0). In 100 ºC lost without water gesso into things, 250 when ºC decomposed into coke sodium.
Disodium phosphate is used in the food industry as emulsifying agent, buffering agent, and brine constituent. Examples such as processed cheeses and dairy products.
| INSPECTION ITEMS | PRODUCT INDEX | INSPECTION RESULT | CONCLUSION |
| Characters | Colorless liquid or colorless crystals, hygroscopic, miscible with water and with alcohol. | ||
| DMSO CONTENT % | ≥ 99.8 | 99.90 | Passed |
| Relative density | 1.100-1.104 | 1.104 | Passed |
| Relative index | 1.478-1.479 | 1.4786 | passed |
| Related substances% | ≤ 0.1 | 0.05 | Passed |
| CRYSTALIAING POINT | ≤ 18.3° C | 18.3 | Passed |
| ACID VALUE (KOH)/g | ≤ 0.01 | 0.01 | Passed |
| REFEACTIVE INDEX (20° C) | 1.4775~1.4790 | 1.4780 | Passed |
| TRANSMITTANCE 400nm | ≥ 96.0 | 96 | Passed |
| Water Content % | ≤ 0.2 | 0.08 | Passed |
