醋(cu)(cu)(cu)酸(suan)鹽(yan)醋(cu)(cu)(cu)酸(suan)鹽(yan)由醋(cu)(cu)(cu)酸(suan)跟某(mou)些(xie)金屬、堿(jian)(jian)性(xing)(xing)(xing)氧化(hua)物(wu)、堿(jian)(jian)等反(fan)應生成(cheng),醋(cu)(cu)(cu)酸(suan)化(hua)學(xue)式(shi)為CH3COOH。醋(cu)(cu)(cu)酸(suan)是(shi)無色(se)、有(you)刺(ci)激性(xing)(xing)(xing)酸(suan)味的(de)液體，熔點(dian)16.6℃、沸點(dian)117.87℃、密度為1.0492g/cm3。純醋(cu)(cu)(cu)酸(suan)在16.6℃以(yi)下能(neng)結(jie)合成(cheng)冰狀固體，又稱(cheng)冰醋(cu)(cu)(cu)酸(suan)。醋(cu)(cu)(cu)酸(suan)易溶(rong)于水及(ji)許多有(you)機溶(rong)劑。醋(cu)(cu)(cu)酸(suan)有(you)強烈的(de)腐(fu)蝕性(xing)(xing)(xing)，它的(de)水溶(rong)液有(you)弱酸(suan)性(xing)(xing)(xing)，能(neng)跟許多活潑金屬、堿(jian)(jian)性(xing)(xing)(xing)氧化(hua)物(wu)、堿(jian)(jian)等反(fan)應生成(cheng)醋(cu)(cu)(cu)酸(suan)鹽(yan)。某(mou)些(xie)醋(cu)(cu)(cu)酸(suan)鹽(yan)如醋(cu)(cu)(cu)酸(suan)錳、醋(cu)(cu)(cu)酸(suan)鋁(lv)可用(yong)(yong)做(zuo)染(ran)色(se)工業的(de)媒染(ran)劑。工業上(shang)生產(chan)醋(cu)(cu)(cu)酸(suan)有(you)兩(liang)類方(fang)法：一類是(shi)以(yi)糧食或酒為原料，用(yong)(yong)發酵法釀醋(cu)(cu)(cu)，食用(yong)(yong)醋(cu)(cu)(cu)常(chang)用(yong)(yong)此法。食用(yong)(yong)醋(cu)(cu)(cu)除含(han)3～6%的(de)醋(cu)(cu)(cu)酸(suan)，還含(han)有(you)其它有(you)機酸(suan)、蛋白質(zhi)等。另一類是(shi)用(yong)(yong)石油(you)裂解氣(qi)提(ti)取的(de)乙烯(C2H4)或丁烷(C4H10)為原料，在一定(ding)條(tiao)件下氧化(hua)成(cheng)醋(cu)(cu)(cu)酸(suan)。醋(cu)(cu)(cu)酸(suan)是(shi)重(zhong)要(yao)的(de)有(you)機化(hua)工原料，用(yong)(yong)于生產(chan)醋(cu)(cu)(cu)酸(suan)纖維、噴漆溶(rong)劑、香料、染(ran)料、醫(yi)藥(yao)等。