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表面活性剂是随着石油化工业的飞速发展而兴起的一种新型化学品，是精细化工的重要产品，享有“工业味精”的美称。它几乎渗透到一切技术经济部门。随着世界经济的发展以及科学技术领域的开拓，它...
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琼脂糖的基本结构是由1,3连结的β-D-半乳呋喃糖和1,4连结的3,6-脱水α-L-半乳呋喃糖相间联结而成。琼脂糖具有亲水性，并几乎完全不存在带电基团，对敏感的生物大分子极少引起变...
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1. 硒有抗癌、抗衰老、抗突变、抗氧化作用。硒还有解毒功能，增强机体免疫力作用清除体内垃圾，排除体内毒素，排除重金属毒物。2. 硒可以用作光敏材料和半导体材料；3.&n...
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苦精，化学名苯甲地那铵，白色结晶性粉末或颗粒，是目前世界上已知最苦的物质，还载入了吉尼斯世界纪录。在溶液中的浓度达0.003%时便使人难以忍受，由于使用浓度极低，在通常使用条件下是...
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Tris Chinese name tris (hydroxymethyl aminomethane, also known as aminobutanol, bradykini...
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Mix 50ml 0.1mol/l Tris solution with X ml 0.1mol/l hydrochloric acid and dilute to 100ml w...
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Can be negative. Generally speaking, the activation energy of our common elementary reacti...
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Chemical industry is the general name of enterprises and units engaged in chemical industr...
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第一章 一般规定 第一条 为保护民事主体的合法权益，明确侵权责任，预防并制裁侵权行为，促进社会和谐稳定，制定本法。 第二条 侵害民...
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Reagents whose purity is much higher than that of superior grade are called high-purity re...
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For most purchasers, it is not easy to find the true Tris manufacturer. Many businesses ca...
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Biochemical testing is widely used in scientific research, new product development, diagno...
