Dinatriumphosphonat
Sodium phosphite
CAS: 13708-85-5;22620-95-7
Molecular Formula: H4NaO3P
Dinatriumphosphonat - Names and Identifiers
| Name | Sodium phosphite |
| Synonyms | Sodium phosphite Sodium Hyphosphite disodium phosphite Dinatriumphosphonat trisodium phosphite Sodiumphosphitetech disodium phosphonate SODIUMPHOSPHITE,DIBASIC Phosphonic acid, disodium salt Phosphorous acid disodium salt Sodium phsophite dibasic anhydrous phosphorus(1+), diolatooxo-, disodium salt |
| CAS | 13708-85-5 22620-95-7 |
| EINECS | 237-249-1 |
| InChI | InChI=1/2Na.H3O3P/c;;1-4(2)3/h;;4H,(H2,1,2,3)/q2*+1;/p-2 |
Dinatriumphosphonat - Physico-chemical Properties
| Molecular Formula | H4NaO3P |
| Molar Mass | 105.99 |
| Density | 2.05[at 20℃] |
| Melting Point | 53℃ [HAW93] |
| Boling Point | 200–250, decomposes [HAW93] |
| Water Solubility | g anhydrous/100 g H2O: 418 (0°C), 429 (20°C), 566 (30°C) [LAN05]; insoluble alcohol [HAW93] |
| Vapor Presure | 0Pa at 20℃ |
| pKa | 6.52[at 20 ℃] |
| Storage Condition | Room Temprature |
| Physical and Chemical Properties | Sodium phosphite is a trivalent normal salt, the chemical formula is Na2HPO3.5H2O, white crystalline powder, good solubility, solubility in water at room temperature 100g/100ML, heated to the decomposition temperature decomposition to generate sodium phosphate and ph3. Sodium phosphite pH value between 9-10, is a positive salt, two is not acid salt, sodium phosphite is acid salt, two molecular structure, phosphorus, sodium content is completely different. Sodium phosphite contains low valence of 3 phosphorus, with reduction characteristics, can reduce metal ions, in water treatment, surface processing and other industries have a certain use, can also be used as an analytical reagent. |
Dinatriumphosphonat - Reference Information
| LogP | 0.3 at 20℃ |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | sodium phosphite and sodium hypophosphite are new products of phosphate, which are widely used in chemical and material fields and are mainly used as various reducing agents. Because the reducibility of sodium phosphite is weaker and more stable than sodium hypophosphite, it can replace sodium hypophosphite as a reducing agent to a certain extent, and has better stability and safety. |
Last Update：2024-06-13 11:17:10
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