2-??????? ?
|
|
2-??????? ? ??
- ???
- 245 °C (dec.)(lit.)
- ?? ??
- 210kg/m3
- ??
- 1.451 (estimate)
- ???
- 1.7690 (estimate)
- ?? ??
- Inert atmosphere,2-8°C
- ???
- 50g/l ?? ???
- ??? ??
- ??
- ?? ?? (pKa)
- 3.96±0.20(Predicted)
- ??
- ???
- ??????(pH)
- 1.7-1.9 (10g/l, H2O, 20℃)
- ???
- <6g/L(20℃)
- BRN
- 120663
- ???
- ????. ?? ???? ???? ????.
- InChIKey
- RVBUGGBMJDPOST-UHFFFAOYSA-N
- CAS ??????
- 504-17-6(CAS DataBase Reference)
??
- ?? ? ?? ??
- ?? ? ???? ?? (GHS)
| ??? ?? | Xi | ||
|---|---|---|---|
| ?? ???? ?? | 36/37/38 | ||
| ????? | 22-24/25-37/39-26 | ||
| ????(UN No.) | UN 3335 | ||
| WGK ?? | 2 | ||
| RTECS ?? | CQ7700000 | ||
| F ?????? | 13-23 | ||
| TSCA | Yes | ||
| HS ?? | 29335995 | ||
| ???? ?? | KE-10756 |
2-??????? ? C??? ??, ??, ??
??? ??
Off-White to Yellow Powder. soluble in hot water, alcohol, ether, alkali and sodium carbonate solution, slightly soluble in water.??
2-Thiobarbituric acid has been used to measure malondialdehyde (MDA) in lipid peroxidation assay.??
ChEBI: 2-thiobarbituric acid is a barbiturate, the structure of which is that of barbituric acid in which the oxygen at C-2 is replaced by sulfur. It has a role as a reagent and an allergen.?? ??
2-thiobarbituric acid was synthesized by the reaction of diethyl malonate with thiourea. Dissolve thiourea in methanol, add sodium methoxide and diethyl malonate, heat under reflux for 4-5h, then distill under reduced pressure to recover methanol to the end, and add hydrochloric acid to acidify to pH 1-2 after cooling. After standing overnight, thiobarbituric acid crystals were precipitated, filtered, and recrystallized with water to obtain the pure product.?? ??
2-Thiobarbituric acid is a molecule made up of heteroatoms: nitrogen, sulphur and oxygen.Purification Methods
Crystallise it from water. [Beilstein 24 H 476, 24 I 414, 24 II 275, 24 III/IV 1884.]2-??????? ? ?? ?? ? ???
???
?? ??
2-??????? ? ?? ??
???( 494)?? ??
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|---|---|---|---|---|---|
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