亚洲天堂色图_日韩一级毛_牛牛热免费aV_一级作爱片_一级强奸A片_97超碰人人操人人操

亚洲天堂色图_日韩一级毛_牛牛热免费aV_一级作爱片_一级强奸A片_97超碰人人操人人操

亚洲天堂色图_日韩一级毛_牛牛热免费aV_一级作爱片_一级强奸A片_97超碰人人操人人操

Service hotline: 0571-86692169

Imidazole

Product Name: Imidazole
Product Name: Glyoxaline
Packing price: 25KG/RMB
Purity specification: 99%
Product Category: Pharmaceutical Intermediates
CAS: 288-32-4

Molecular formula: C3H4N2
Molecular weight: 68.0773
Properties: colorless prismatic crystal or yellowish crystal, soluble in water, weakly alkaline. Toxic, oral LD50: 18.80mg/kg in mice. LD50610mg/kg was injected, and its toxicity and protective methods were similar to those of ethylenediamine.
Uses: used as epoxy resin curing agent, widely used in computers, electrical appliances; as a rust inhibitor for copper for printed circuit boards and integrated circuits; as a raw material for pharmaceuticals, for the manufacture of antifungal agents, antifungal agents, low Blood sugar therapeutic drugs, artificial plasma, trichomoniasis therapeutic drugs, bronchial asthma therapeutic drugs, anti-leucorrhea agents, etc.; used as a raw material for pesticides, as a synergist for boric acid preparations, preparation of insecticides and fungicides; Used as a raw material for urea-formaldehyde resin curing agent, photographic drug, adhesive, paint, rubber vulcanizing agent, antistatic agent, etc.
Storage: Packed in wooden or glass bottles. Store in a cool, ventilated, dry place. Heat, moisture, sun, and collision.

亚洲天堂色图_日韩一级毛_牛牛热免费aV_一级作爱片_一级强奸A片_97超碰人人操人人操
五月丁香加勒比| 亚洲V天堂| A级黄色视频网址| 亚洲av观看网址| 日韩成人黄色| 一区二区电影| 欧日无码| A毛片怎么看| 久草在线x| 国产A片免费| 叼嘿网站91| 日韩欧美国产A片| 日啪天天干| 婷婷操超碰| 亚洲AV成人精品| 搜索国产av| 超碰三级在线| 高清无码啪啪特级黄色片| 操人人97| 免费无码黄色网址| 久操不卡av| 日美色播放| 国外免费一级A片| 在线观看免费高清A片| 不卡一区无码二区三区| 美女性黄色视频| 97人人操人人干| 日韩精品无码AV| 日韩一级黄毛片| A久久久久| 亚州一级a视频| A级片AAA| 中国全黄色全视频| 免费av天堂| av成人资源在线| 日韩aaaaa片| 成人三级毛片| 外国黄色视频| 亚洲无码视屏一区| 高清无码一及AA| 大学生一级A片|