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L00982 4-Amino-3-hydrazino-5-mercapto-1,2,4-triazole, 99+%

CAS Number

Stock No. Size Price ($) Quantity Availability
L00982-06 5g 35.80
L00982-14 25g 146.00
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4-Amino-3-hydrazino-5-mercapto-1,2,4-triazole, 99+%


Chemical Properties

Formula Weight
Melting point
ca 220° dec.
Storage & Sensitivity
Ambient temperatures.
Soluble in Dimethyl sulfoxide. (DMSO)


4-Amino-3-hydrazino-5-mercapto-1,2,4-triazole is a reagent used in the determination of aldehydes and other reactive chemicals.was used in purpald assay for determination of bacterial polysaccharides containing substituted or unsubstituted glycol in residues such as glycerol, ribitol, arabinitol, furanosyl galactose and sialic acid. It was used as chromogen during the determination of catalase activity in small tissue samples. It was used as reagent in determination of formaldehyde. It was used for derivatization of neutral monosaccharides during HPLC.


Store at -20°C. Avoid contact with heat. Incompatible with oxidizing agents.

Literature References

Kunihiro KamatA; Misako Takahashi; Kiyoshi Terajima and Motohiro Nishijima. Spectrophotometric determination of sodium chondroitin sulfate in eye drops after derivatization with 4-amino-3-hydrazino-5-mercapto-1,2,4-triazole.Analyst.1995, 120 2755-2758.

M. J. Del Nozala; J. L. Bernala; V. Hernandeza; L. Toribioa & R. Mendezb. Purpald (4-Amino-3-hydrazino-5-mercapto-1, 2, 4-triazole) as a Reagent for Post-Column Derivatization of Neutral Monosaccharides in High Pressure Liquid Chromatography.Journal of Liquid Chromatography.1993, 16 1105-1116.

Reagent for the detection and classification of aldehydes: Chem. Commun., 1719 (1970); J. Chem. Educ., 55, 206 (1978). The reagent gives no color reaction with ketones.

GHS Hazard and Precautionary Statements

Hazard Statements: H228-H315-H319-H335

Flammable solid. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P210-P240-P241-P261-P264b-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P332+P313-P337+P313-P362-P370+P378q-P501c

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Ground/bond container and receiving equipment. Use explosion-proof electrical/ventilating/lighting/ equipment. Avoid breathing dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Call a POISON CENTER or doctor/physician if you feel unwell. If skin irritation occurs: Get medical advice/attention. If eye irritation persists: Take off contaminated clothing and wash before reuse. In case of fire: Use CO2, dry chemical, or foam Dispose of contents/ container to an approved waste disposal plant

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