<sup id="7fs5o"></sup>
        Welcome: Xiamen Higee Chemical industry Co., Ltd.
        Language: Chinese ∷  English

        Industry new

        What is rosin?

        The rosin is a transparent solid of yellowish to yellow red, the softening point is 70~90 C, the proportion is 1.070 to 1.085, the heat of dissolving is: 15.8kcal/kg, heat capacity: 0.54kcal/kg. C, thermal conductivity: 0.11kcal/m. H. C, volume resistivity: 5 x 1016 Omega cm, flash point: 216 C. The rosin also has crystallization characteristics, it is easy to produce crystallization, in acetone and other organic solvents, there will be crystallization trend, the critical temperature of crystallization is about 100 degrees C, the melting point of crystalline rosin is 110~135, and it is difficult to saponification. In addition, rosin also has optical rotation, rosin specific rotation between 0 to 15 degrees (optimum point + 7 degrees) is the crystalline phenomenon and the crystalline trend of the lowest rosin.

        CATEGORIES

        CONTACT US

        Tel: 0086-592-6583982

        Fax: 0086-592-6581283

        Phone: 0086-13859132517

        Contact: zhang

        Email: elaine.haijuhg@aliyun.com

        Add: Haicang District of Xiamen City, China

        TAGS Gum RosinTerpene phenol resinVacuum plating coating resinSignpost marking paint resinRosin modified phenolic resinMaleic resinRosin Pentaerythritol EsterGlycerol ester of rosinModified RosinAlcohol-soluble RosinTerpene resin
        国产一区日韩二区欧美三_中文字幕一区二区三区SDDE_亚洲人成在线播放无码_亚洲女精品一区二区三区

            <sup id="7fs5o"></sup>
            亚洲熟女少妇一区二区 | 中文天堂最新中文字幕版 | 午夜在线视频影院 | 日韩中文字幕在线综合网 | 中文字幕不卡免费精品视频 | 在线免费一级大片 |