What are the preparation methods of triazole?

The preparation method of triazazole: reaction of o-phenyltriamine with sodium nitrite. Dissolve o-phenylenediamine in 50℃ water, then add glacial acetic acid, cool to 5℃, add sodium nitrite stirring reaction. The reactants gradually turned dark green, heated to 70-80℃, the solution turned orange red, placed at room temperature for 2h, cooled, filtered out crystallization, ice water washing, crude drying, crude vacuum distillation, collected 201-204℃ (2.0kpa) fraction, and then recrystallized with benzene, the melting point of 96-97℃ products, the yield of about 80%. 124 Triazole is a by-product of carbendazim condensation wastewater treated with sodium nitrite.

Laihebi Xinyuhong Chemical Co., Ltd. was established in June 2014 with a registered capital of 20 million YUAN and a total investment of 100 million yuan. It is a key investment enterprise of Heshan District government. The main products are: 1,2, 4-triazole, pesticide intermediates, triazole, 124 triazole. With the "double development strategy" of environmental protection first and advanced products, the company realizes green and clean production of raw materials, production process and the whole process of products, with a total annual production capacity of 9000 tons. Tel: 13803920662 Email: 545642184@qq.com Address: Jijiashan Industrial Park, Heshan District, Hebi City