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1,2-丙二醇為(wei)一種化學(xue)試劑，與(yu)水(shui)、乙(yi)醇及多種有機溶劑混溶, 其化學(xue)式為(wei) C3H8O2。常態(tai)下為(wei)無色(se)粘稠液體，近(jin)乎無味，細聞微甜。

主要用途：

1.丙(bing)二(er)(er)醇(chun)是不(bu)飽(bao)和(he)(he)聚(ju)酯(zhi)、環氧樹脂、聚(ju)氨酯(zhi)樹脂、增(zeng)(zeng)塑劑(ji)(ji)(ji)(ji)、表面(mian)活性(xing)劑(ji)(ji)(ji)(ji)的(de)(de)重要原料(liao)(liao)，這(zhe)方面(mian)的(de)(de)用(yong)(yong)(yong)(yong)量(liang)約占丙(bing)二(er)(er)醇(chun)總消費量(liang)的(de)(de)45%左右，這(zhe)種不(bu)飽(bao)和(he)(he)聚(ju)酯(zhi)大量(liang)用(yong)(yong)(yong)(yong)于表面(mian)涂料(liao)(liao)和(he)(he)增(zeng)(zeng)強塑料(liao)(liao)。丙(bing)二(er)(er)醇(chun)的(de)(de)粘(zhan)性(xing)和(he)(he)吸(xi)濕(shi)(shi)性(xing)好(hao)，在(zai)(zai)食(shi)品(pin)(pin)、醫(yi)藥和(he)(he)化妝品(pin)(pin)工(gong)業(ye)中廣(guang)泛用(yong)(yong)(yong)(yong)作(zuo)(zuo)吸(xi)濕(shi)(shi)劑(ji)(ji)(ji)(ji)、抗凍劑(ji)(ji)(ji)(ji)、潤(run)滑(hua)劑(ji)(ji)(ji)(ji)和(he)(he)溶(rong)(rong)(rong)(rong)劑(ji)(ji)(ji)(ji)。在(zai)(zai)食(shi)品(pin)(pin)工(gong)業(ye)中，丙(bing)二(er)(er)醇(chun)和(he)(he)脂肪酸反應(ying)生成丙(bing)二(er)(er)醇(chun)脂肪酸酯(zhi)，主要用(yong)(yong)(yong)(yong)作(zuo)(zuo)食(shi)品(pin)(pin)乳化劑(ji)(ji)(ji)(ji)；丙(bing)二(er)(er)醇(chun)是調味品(pin)(pin)和(he)(he)色(se)素(su)(su)的(de)(de)優良溶(rong)(rong)(rong)(rong)劑(ji)(ji)(ji)(ji)。由于毒性(xing)低，在(zai)(zai)食(shi)品(pin)(pin)工(gong)業(ye)中用(yong)(yong)(yong)(yong)作(zuo)(zuo)香(xiang)(xiang)料(liao)(liao)、食(shi)用(yong)(yong)(yong)(yong)色(se)素(su)(su)的(de)(de)溶(rong)(rong)(rong)(rong)劑(ji)(ji)(ji)(ji)。丙(bing)二(er)(er)醇(chun)在(zai)(zai)醫(yi)藥工(gong)業(ye)中常用(yong)(yong)(yong)(yong)作(zuo)(zuo)制造各(ge)類軟(ruan)膏、油(you)(you)膏的(de)(de)溶(rong)(rong)(rong)(rong)劑(ji)(ji)(ji)(ji)、軟(ruan)化劑(ji)(ji)(ji)(ji)和(he)(he)賦形(xing)劑(ji)(ji)(ji)(ji)等(deng)，在(zai)(zai)醫(yi)藥工(gong)業(ye)中用(yong)(yong)(yong)(yong)作(zuo)(zuo)調合(he)劑(ji)(ji)(ji)(ji)、防(fang)(fang)腐劑(ji)(ji)(ji)(ji)、軟(ruan)膏、維生素(su)(su)、青霉素(su)(su)等(deng)的(de)(de)溶(rong)(rong)(rong)(rong)劑(ji)(ji)(ji)(ji)。由于丙(bing)二(er)(er)醇(chun)與(yu)各(ge)類香(xiang)(xiang)料(liao)(liao)具(ju)有較好(hao)互溶(rong)(rong)(rong)(rong)性(xing)，因而也用(yong)(yong)(yong)(yong)作(zuo)(zuo)化妝品(pin)(pin)的(de)(de)溶(rong)(rong)(rong)(rong)劑(ji)(ji)(ji)(ji)和(he)(he)軟(ruan)化劑(ji)(ji)(ji)(ji)等(deng)等(deng)。丙(bing)二(er)(er)醇(chun)還用(yong)(yong)(yong)(yong)作(zuo)(zuo)煙草(cao)增(zeng)(zeng)濕(shi)(shi)劑(ji)(ji)(ji)(ji)、防(fang)(fang)霉劑(ji)(ji)(ji)(ji)，食(shi)品(pin)(pin)加(jia)工(gong)設(she)備潤(run)滑(hua)油(you)(you)和(he)(he)食(shi)品(pin)(pin)標記(ji)油(you)(you)墨的(de)(de)溶(rong)(rong)(rong)(rong)劑(ji)(ji)(ji)(ji)。丙(bing)二(er)(er)醇(chun)的(de)(de)水(shui)溶(rong)(rong)(rong)(rong)液是有效(xiao)的(de)(de)抗凍劑(ji)(ji)(ji)(ji)。也用(yong)(yong)(yong)(yong)作(zuo)(zuo)煙草(cao)潤(run)濕(shi)(shi)劑(ji)(ji)(ji)(ji)、防(fang)(fang)霉劑(ji)(ji)(ji)(ji)、水(shui)果(guo)催熟防(fang)(fang)腐劑(ji)(ji)(ji)(ji)、防(fang)(fang)凍液和(he)(he)熱載體等(deng)。

2.用(yong)于有機合成，用(yong)作(zuo)溶劑(ji)、脫水劑(ji)、增塑劑(ji)、抗凍劑(ji)、氣相色譜(pu)固定液(ye)。

3.常(chang)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)的有機合成原料(liao)(liao)，用(yong)(yong)(yong)(yong)(yong)(yong)(yong)于(yu)制(zhi)造不飽和(he)聚酯樹(shu)脂(zhi)。也(ye)可(ke)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)乳化劑(ji)、防腐(fu)劑(ji)、防凍(dong)劑(ji)。還用(yong)(yong)(yong)(yong)(yong)(yong)(yong)于(yu)制(zhi)造醇(chun)(chun)酸樹(shu)脂(zhi)、聚丙(bing)二醇(chun)(chun)、增塑(su)劑(ji)、表面活性劑(ji)及潤滑劑(ji)等。由于(yu)具有吸濕性好、毒性低的特點，在(zai)醫藥工(gong)業中(zhong)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)調(diao)和(he)劑(ji)、防腐(fu)劑(ji)、軟膏、油(you)膏、藥丸及維生(sheng)素(su)等的溶(rong)劑(ji)，也(ye)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)軟化劑(ji)及賦形劑(ji)。在(zai)食品(pin)工(gong)業中(zhong)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)香料(liao)(liao)、調(diao)味品(pin)及食用(yong)(yong)(yong)(yong)(yong)(yong)(yong)色素(su)的溶(rong)劑(ji)。還用(yong)(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)煙草增濕劑(ji)、防霉劑(ji)、水果催熟(shu)防腐(fu)劑(ji)、涂料(liao)(liao)成膜助劑(ji)、防凍(dong)劑(ji)及傳熱介(jie)質等。也(ye)常(chang)作(zuo)為乙(yi)醇(chun)(chun)和(he)甘油(you)的代用(yong)(yong)(yong)(yong)(yong)(yong)(yong)品(pin)，在(zai)牙膏、化妝品(pin)中(zhong)可(ke)與甘油(you)或(huo)山梨醇(chun)(chun)配合用(yong)(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)潤濕劑(ji)。