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
A级无码视频| 海角AV| 日本A V在线播放| 777午夜久久| av色色国产| 日韩中文av三级片| 日韩国产A片| 在线观看a视频| 日本A片高清| 草草AAA片| 日韩无码AV免费看| 无码网战| 亚洲AV无码A片| 亚洲无码伦理| 亚洲淫色区| a级篇黄色毛片| AV三级无码| 影音先锋女人乳汁| 三级片综合网| 一级成人毛片黄色区| a片无码k| 日韩无码久久熟女一级片| 四季日韩AV无码专区| 男人AV网站| 亚洲四级片| AAA.AV| 亚洲成人AV一| 性爱网五月天| 97高清无码免费视频| 亚洲一级免费电影| 成人电影男人天堂| 美女无码不卡的av| 亚洲+无码+欧美+另类| 不卡七区在| 日韩久久无码成人| 成人a'v电影在线播放| 91黄色片视频| 超碰人干人| 毛片一婬片A片中文字幕| 一级aaa黄毛片欧美| 无码性爱免费看电影|