国产一级 片内射视频播放蘑菇,国产A√精品区二区三区四区,羊的图腾图片大全,少妇一级 片内射视频

  • <code id="wq5x2"><small id="wq5x2"></small></code>
    <code id="wq5x2"><small id="wq5x2"></small></code>

      1. <code id="wq5x2"><em id="wq5x2"><track id="wq5x2"></track></em></code>
        <code id="wq5x2"><em id="wq5x2"></em></code>
          1. Welcome to Ganfeng Lithium Group Co., Ltd.!(A share code: 002460 | H share code: 01772)
            Product category
            Methyl lithium
            Product introduction

            Methyllithium, molecular weight: 21.9755, flash point: 5°F, density: 0.85g/mL (20/4°C), stable under normal temperature and pressure, colorless, transparent to slightly yellow liquid, resistant to air and water It is extremely sensitive and can ignite spontaneously in the air. Insoluble in hydrocarbon solvents; soluble in ether solvents; reacts with water and other protic solvents to generate methane. It is generally used as an alkaline reagent and reducing agent for allene synthesis. A-light ketone is converted into cis-diol, etc. Methyl lithium can also methylate a variety of functional groups, can remove protective groups, and synthesize other methylated organometallic reagents, which can be used as bases and reduce transition metals, etc. .

            Product category and standards

            Product technical indicators:
            Content: 0.5~0.56 Mol/L; alkaline impurities: ≤1.0% (max); covalent chlorine and Cl-: ≤0.1% (max).


            Specifications:
            250ml, 500ml, 1L, etc.

            Product packaging

            500ml reagent bottle, 30L—500L steel bottle

            Follow Us
            WeChat official account
            top