日韩欧美国产中文字幕,久久999免费视频,2020国产精品级品色在线,亚洲最大的aⅴ久久网站

<blockquote id="rrlii"><legend id="rrlii"></legend></blockquote>
    <dd id="rrlii"></dd>
  • Weinan Huifeng New Material Technology Co., Ltd.

    4-Aminobenzoic acid

    4-Aminobenzoic acid

    appearance: white crystal powder
    Purity: 98%
    Structural formula:

    【English name】p-aminobenzoic acid
    【Relative molecular weight】137.14
    【Density】1.374(25℃)
    【Melting point (℃)】187~188
    【CAS#】150-13-0
    【EINECS#】 205-753-0
    To use:
    As intermediate of dyes and medical intermediate; for production of active red M-80, M-10B, active purple X-2R; as sun-screening agent


    【Return】