4-Amino-3-hydrazino-5-mercapto-1,2,4-triazole
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Names | |
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Preferred IUPAC name 4-Amino-5-hydrazinyl-2,4-dihydro-3H-1,2,4-triazole-3-thione | |
Other names Purpald; AHMT; 1,2,4-Triazolidin-3-one, 4-amino-5-thioxo-, hydrazone (9CI); 4H-1,2,4-Triazole-3-thiol, 4-amino-5-hydrazino- (6CI,7CI) | |
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ECHA InfoCard | 100.015.578 ![]() |
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InChI
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Properties | |
Chemical formula | C2H6N6S |
Molar mass | 146.17 |
Appearance | white solid |
Density | 1.69 g/cm3 |
Melting point | 228 °C (442 °F; 501 K) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references |
Chemical compound
4-Amino-3-hydrazino-5-mercapto-1,2,4-triazole is an organic compound with the formula SC2N3H(NH2)(N2H3). The compound consists of a 1,2,4-triazole heterocycle with three functional groups: amine, thioamide and hydrazyl. X-ray crystallography shows that this molecule is polar but with a C=S double bond. It is prepared by the reaction of hydrazine with thiourea:[1]
- 2 SC(NH2)2 + 3 N2H4 → SC2N3H(NH2)(N2H3) + 4 NH3 + H2S
The compound has been used as a reagent for the colorimetric detection of aldehydes.[2]