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
国产高清A片| 黄色美女一级A片视频| 亚洲成年黄| AV在线收看| 免费一看一级大毛片久久| 亚洲手机av| 超碰国产综合在线| 日韩AV无码免费看| 日韩成人黄色AV| 操逼高潮视频91| 色成视频| 超碰97国产人人干人人| 欧州aV| 亚洲AV无码成人片| 做爱视频黄色| a片优盘| 亚洲操逼网络| 日韩黄色成人av影片| 精品日本999| 色色成人五月天| 日韩颜色网站成人片| 日韩AV色| 91三级片在线| AV动漫网站免费| 亚洲欧美日韩另类| 岛国AV在线播放| 日韩一级片毛片经典| 成人五月桃花网| 97超碰人妻资源国产| 日本成人A片网址| 超碰在线视| 国产精品免费偷论视频| A级成人无码网| 亚洲无码矿区| 91人妻人人品人人| 嫩草A级片| 韩国超碰97成人| 91aV久久| 韩日911| 高青三级片| 2024欧美性爱|