Trisodium monothiophosphate
Trisodium thiophosphate
CAS: 51674-17-0
Molecular Formula: H24Na3O15PS
Trisodium monothiophosphate - Names and Identifiers
| Name | Trisodium thiophosphate |
| Synonyms | Sodium thiophosphate Sodium phosphorothioate Trisodium thiophosphate Trisodium phosphorothioate Trisodium monothiophosphate phosphorothioic O,O,O-acidato(3-) Thiophosphoric acid, trisodium salt Phosphorothioic acid, trisodium salt |
| CAS | 51674-17-0 |
| EINECS | 621-525-7 |
| InChI | InChI=1S/3Na.H3O3PS/c;;;1-4(2,3)5/h;;;(H3,1,2,3,5)/q3*+1;/p-3 |
Trisodium monothiophosphate - Physico-chemical Properties
| Molecular Formula | H24Na3O15PS |
| Molar Mass | 396.19 |
| Melting Point | 60-62℃ |
| Water Solubility | very soluble warm H2O [MER06] |
| Storage Condition | Inert atmosphere,Room Temperature |
Trisodium monothiophosphate - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | 34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S27 - Take off immediately all contaminated clothing. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 3262 8/PG 2 |
Trisodium monothiophosphate - Upstream Downstream Industry
| Downstream Products | Dimethoate Iprobenfos Phenthoate Phosmet 5-AMINOPYRIDINE-2-SULFONIC ACID Morphothion emulsion Amifostine |
Trisodium monothiophosphate - Production method
method 1? PSCl 3 + 6NaOH & rarr;Na 3 PO 3 S + 3NaCl + 3H 2 O
70g of thiophosphoryl chloride PSCl 3 was added to a solution prepared by dissolving 120g of sodium hydroxide in 400mL of water, and heated and refluxed until PSCl 3 was completely dissolved. After cooling, add 100mL of ethanol and cool it. Dissolve about 125g of precipitated crude product in 90mL of water at 50 ℃, filter, cool the filtrate and filter to obtain about 100g of pure crystal.
preparation method 2? Take 100g of phosphorus pentoxide and add a small amount of sodium hydroxide aqueous solution (100g NaOH dissolved in 500mL of water) to react below 50 ℃. Filter the reaction solution, add 200mL of ethanol to the filtrate, cool it, filter the precipitated salt, wash (50% ethanol for the first time, absolute ethanol for the second time) and air dry. Dissolve about 220g of the obtained crude product in 700mL of water, cool to 60 ℃ immediately after heating to 70 ℃ (until intense hydrogen sulfide production begins), add 200mL of ethanol and cool it. Recrystallize the precipitated crystallization several times according to the operation of preparation method 1.
method 3? Na 3 P 3 O 9 + 3Na 2 S & rarr;3Na 3 PO 3 S
the cyclic sodium triphosphate and anhydrous sodium sulfide are mixed in a molar ratio of 1: 3 and melted at 500~550 ℃. The mixture is melted in a graphite crucible under a nitrogen or hydrogen stream (or vacuum). The product is grayish yellow, containing more than 85% of sodium monothiophosphate, recrystallized in aqueous solution to refine sodium dodecahydrate thiophosphate.
Last Update：2024-04-10 22:29:15
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Downstream Products for Trisodium monothiophosphate