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幾種重要的醇
發布時間: 2016年07月09日 【字體:

  *甲醇


  甲醇最早由木材干流得到,故稱木精。甲醇為無色液體,易燃,爆炸極限6.0%-36.5%(體積)。有毒性,甲醇蒸汽與眼接觸可引起失明,飲用亦可致盲。甲醇用途很廣,只要用來制備甲醛以及在有機合成工業中用作甲基化劑和溶劑,也可加入汽油或單獨用作汽車或飛機的燃料。


  *乙醇


  乙醇俗稱酒精。我國古代就知道谷類用曲發酵釀酒。目前工業上有乙烯為原料來大量生產乙醇,但用發酵方法仍是工業上生產乙醇的方法之一。乙醇是重要的工業原料,但也是酒類的原料,為了防止供應工業廉價的乙醇被用作配制酒類,常加入少量有毒,有嗅味或有色物質。乙醇的用途極廣,是各種有機合成工業的重要原料,也是常用的溶劑。70%-75%乙醇的殺菌能力最強,用作防腐,消毒劑。


  *乙二醇


  乙二醇俗稱甘醇,是多元醇中最簡單,工業上最重要的二元醇??梢赃\用科學的方法使更多乙二醇分子縮合而成的高聚體的混合物,稱為聚乙二醇。聚乙二醇工業上用途很廣,可以用作乳化劑,軟化劑以及氣體凈化劑等。乙二醇是帶有甜味但有毒性的粘稠液體,其中含40%(體積)乙二醇的水溶液,冰點-25℃,60%(體積)的水溶液的冰點為-49℃,由于水溶液的冰點低,在水中的溶解度又大,因此,乙二醇是良好的防凍液。


  這幾種重要的醇類物質,我們提供AR,CP等級別。敬請客戶根據自己的需求,選購。


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