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, hydrazide. 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:

CAS：1750-12-5
中文别名：4-氨基联基巯基-1,2,4-三氮杂茂;4-氨基-3-肼-5-巯基-1,2,4-三唑;4-氨基-3-肼基-1,2,4-三唑-5-硫;4-氨基-3-联氨-5-巯基-1.2.4三氮杂茂;4-氨基-3-肼基-5-巯基-1,2,4-三唑;4-氨基-5-肼基-1,2,4-三唑-3-硫;4-氨基-3-联氨-5-疏基-1,2,4-三氮杂茂;4-氨基-3-肼基-5-巯基-1.2.4-三唑;
英文别名：PURPALD;3-hydrazino-4-amino-5-mercapto-1,2,4-triazole;AHMT;4-Amino-5-hydrazino-1,2,4-triazole-3-thiol;4-amino-3-hydrazino-5-mercapto-1,2,4-triazol;4-N-amino-3-hyrazino-5-thioxo-1,2,4-triazole;4-amino-5-hydrazinyl-4H-1,2,4-triazole-3-thiol;4-amino-3-hydrazino-5-mercapto-1,2,4-triazole;4-Amino-3-hydrazino;purpald tm;4-Amino-3-hydrazino-5-mercapto-1,2,4-triazole;
分子式：C2H6N6S
分子量：146.174
精确质量：146.037
Psa：133.58
Logp：-0.0793

PubChem号：24846146
EINECS号：217-135-8
MDL号：MFCD00003098
BRN号：134867

外观与性状：白色至米色粉末
密度：2.31 g/cm3
沸点：275ºC at 760 mmHg
熔点：228-230°C (dec.)(lit.)
闪点：120.1ºC
稳定性：Stable under normal temperatures and pressures.
储存条件：0-6ºC

安全说明：S26-S36
WGK Germany：3
危险类别码：R36/37/38
危险品运输编码：1325
海关编码：2933990090
危险类别：4.1
包装等级：III
危险品标志：Xi
危险性防范说明：P261; P305 + P351 + P338
危险性描述：H315; H319; H335
信号词：Warning
危险标志：GHS07

用途
检定和测定醛的灵敏试剂。在高压液相色谱分析中用作衍生化普通单糖类化合物。与相转移催化剂一起与醛作分类试验。