1H-1,2,3-Triazole-5-carboxylic acid methyl ester
[CAS# 4967-77-5]

Identification

• Name: 1H-1,2,3-Triazole-5-carboxylic acid methyl ester
• Synonyms: Methyl 1,2,3-triazole-4-carboxylate; Methyl 1H-1,2,3-triazole-4-carboxylate
• Molecular Formula: C₄H₅N₃O₂
• Molecular Weight: 127.10
• CAS Registry Number: 4967-77-5
• EC Number: 816-665-2

Properties

• Solubility: Sparingly soluble (27 g/L) (25 ºC), Calc.^*
• Density: 1.380±0.06 g/cm³ (20 ºC 760 Torr), Calc.^*
• Melting point: 140-141 ºC^**
• Boiling point: 279.3±13.0 ºC (760 Torr), Calc.^*
• Flash point: 122.7±19.8 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2016 ACD/Labs)

^** Harju, Kirsi; Journal of Combinatorial Chemistry 2003, V5(6), P826-833.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Specific target organ toxicity - single exposure	STOT SE	3	H335
Eye irritation	Eye Irrit.	2A	H319
Skin irritation	Skin Irrit.	2	H315