• <ul id="womsi"></ul>
    <tfoot id="womsi"></tfoot>
    • <abbr id="womsi"></abbr>
      • <ul id="womsi"></ul>
        Praseodymium neodymium carbonate
        Praseodymium neodymium carbonate
        Detail
        Praseodymium Carbonate
        Chemical formula Pr2 (CO3) 3
        Molecular weight 461.8 CAS 14948-62-0
        Light green powder, insoluble in water, its octahydrate heat to 100 ℃ loss of six molecules of crystal water. Dissolved in acid to generate the corresponding praseodymium salt solution, and release carbon dioxide.
        Into the suspension of praseodymium hydroxide aqueous solution into the carbon dioxide, into a crystal precipitation and dehydration available.
        Stability: slight moisture absorption.
        Uses: manufacture of praseodymium oxide and praseodymium other important raw materials.
        Neodymium carbonate
        Molecular formula: Nd2 (CO3) 3
        Nature: in 25 ℃ water can dissolve 3.46 × 10-6mol / L, can be dissolved in acid, the corresponding salt to produce CO2. In the 320 ~ 550 ℃ thermal decomposition generated Nd2O (CO3) 2,800 ~ 905 ℃ is decomposed into Nd2O2CO3, and finally Nd2O3. (M = NH4 +, Na +, K +, Rb +, Cs +, etc.) can be formed with alkali metal carbonates such as Nd2 (CO3) 3 · M2CO3 · nH2O (M = NH4 +, Na +, K +, Rb +, Cs +, etc.). To the soluble solution of neodymium salt by adding a little excess of ammonium carbonate can be obtained neodymium carbonate precipitation.
        Scan QR codeClose
        主站蜘蛛池模板: 亚洲av无码乱码国产精品| 亚洲а∨天堂久久精品| 欧美精品xxxxbbbb| 麻豆精品成人免费国产片| 一色屋精品视频在线观看| 99熟女精品视频一区二区三区| 久久国产免费观看精品3| 欧美激情精品久久久久久久| 国产成人毛片亚洲精品| 国产福利91精品一区二区| 精品一区二区三区东京热 | www夜片内射视频日韩精品成人| 国产精品偷伦视频观看免费| 一本色道久久88—综合亚洲精品| 精品无人区无码乱码毛片国产| 午夜精品美女写真福利| 国产精品白浆在线观看免费| 日本aⅴ精品中文字幕| 一本久久精品一区二区| 久久99精品久久久久久水蜜桃| 92国产精品午夜福利免费| 国产成人精品日本亚洲11| 国产精品无码专区| 精品亚洲aⅴ在线观看| 日韩精品无码一本二本三本 | 亚洲国产精品13p| 欧美日韩成人精品久久久免费看| 国内精品久久久久久99| 亚洲国产精品嫩草影院在线观看| 久久久无码精品午夜| 精品一区二区三区高清免费观看| 国产成人精品免费大全| 99riav国产精品| 91精品视频观看| 国产vA免费精品高清在线观看| 亚洲精品免费观看| 91精品国产高清久久久久久91| 日本一区精品久久久久影院 | 国产区精品高清在线观看| 国产99视频精品免费视频76 | 久久精品一区二区三区不卡|