硫酸鎂（七水硫酸鎂）CAS:10034-99-8國標 HG/T 2680-2009

工業七水硫酸鎂國標

硫酸鎂（七水硫酸鎂）CAS:10034-99-8國標(biao) HG/T 2680-2009

工業七水硫酸鎂國標

化學性質：

為(wei)白(bai)色或的(de)(de)針(zhen)狀或斜柱狀結(jie)(jie)晶體，無(wu)(wu)臭﹑涼(liang)并微苦，分子量: 246.47，比(bi)重1.68，易(yi)(yi)溶于(yu)水(shui)(shui)，微溶于(yu)乙醇(chun)和(he)甘油，在67.5℃溶于(yu)自身的(de)(de)結(jie)(jie)晶水(shui)(shui)中。受熱分解，70﹑80℃是失去四分子的(de)(de)結(jie)(jie)晶水(shui)(shui)。月200℃失去結(jie)(jie)晶水(shui)(shui)成無(wu)(wu)水(shui)(shui)物(wu)。在空氣（干(gan)燥(zao)）中易(yi)(yi)風化為(wei)粉狀，加熱時(shi)逐漸脫去結(jie)(jie)晶水(shui)(shui)變(bian)為(wei)無(wu)(wu)水(shui)(shui)硫酸(suan)鎂。七水(shui)(shui)硫酸(suan)鎂因為(wei)不容易(yi)(yi)溶解，比(bi)無(wu)(wu)水(shui)(shui)硫酸(suan)鎂更容易(yi)(yi)稱量，便于(yu)在工業中進行的(de)(de)定量控(kong)制。

分類：

硫(liu)酸鎂常指七水(shui)硫(liu)酸鎂（因為它不容易溶解，比無(wu)水(shui)硫(liu)酸鎂容易稱量(liang)，便于(yu)在工業中進行的定量(liang)控(kong)制。）另(ling)外還有一(yi)水(shui)、二(er)水(shui)、三水(shui)、無(wu)水(shui)硫(liu)酸鎂。

七水(shui)硫(liu)酸鎂有工業級和飼料(liao)級，顆(ke)粒狀，根(gen)據大小(xiao)有0.1-1mm,1-3mm,2-4mm三種。

其他(ta)如無水、一水、二水、三(san)水硫酸鎂均為粉末狀。

常用包裝：

25Kg/袋

主要用途：

主(zhu)要用(yong)(yong)(yong)于(yu)微生(sheng)(sheng)物(wu)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)、輕工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)、化(hua)(hua)(hua)學工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)、印染(ran)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)、制(zhi)(zhi)藥(yao)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)、電鍍工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)、冶煉工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)。在(zai)(zai)(zai)(zai)(zai)(zai)農(nong)業(ye)(ye)(ye)(ye)上用(yong)(yong)(yong)作(zuo)(zuo)肥料(liao)(liao)(liao)；可(ke)作(zuo)(zuo)飼料(liao)(liao)(liao)添(tian)加劑 ；用(yong)(yong)(yong)于(yu)火(huo)柴、瓷(ci)器、玻璃、顏料(liao)(liao)(liao)、ABS樹脂(zhi)(zhi)的(de)制(zhi)(zhi)造；在(zai)(zai)(zai)(zai)(zai)(zai)防火(huo)材料(liao)(liao)(liao)方面用(yong)(yong)(yong)作(zuo)(zuo)丙烯酸(suan)脂(zhi)(zhi)樹脂(zhi)(zhi)等(deng)塑(su)料(liao)(liao)(liao)的(de)阻燃劑；用(yong)(yong)(yong)于(yu)污水處理(li)。七(qi)水硫(liu)酸(suan)鎂(mei)(mei)(mei)在(zai)(zai)(zai)(zai)(zai)(zai)輕工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)中(zhong)用(yong)(yong)(yong)于(yu)生(sheng)(sheng)產鮮(xian)酵母、味精、飲料(liao)(liao)(liao)；在(zai)(zai)(zai)(zai)(zai)(zai)化(hua)(hua)(hua)學工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)中(zhong)用(yong)(yong)(yong)于(yu)制(zhi)(zhi)造硬(ying)脂(zhi)(zhi)酸(suan)鎂(mei)(mei)(mei)、磷酸(suan)氫(qing)鎂(mei)(mei)(mei)，氧化(hua)(hua)(hua)鎂(mei)(mei)(mei)等(deng)其(qi)它(ta)鎂(mei)(mei)(mei)鹽和硫(liu)酸(suan)鉀、硫(liu)酸(suan)納等(deng)其(qi)它(ta)硫(liu)酸(suan)鹽；在(zai)(zai)(zai)(zai)(zai)(zai)防火(huo)材料(liao)(liao)(liao)中(zhong)用(yong)(yong)(yong)作(zuo)(zuo)填(tian)充劑耐熱(re)性；在(zai)(zai)(zai)(zai)(zai)(zai)制(zhi)(zhi)藥(yao)上硫(liu)酸(suan)鎂(mei)(mei)(mei)加工(gong)(gong)(gong)(gong)(gong)為瀉藥(yao)、抗驚厥藥(yao)、三硅酸(suan)鎂(mei)(mei)(mei)、麥白霉素、乙酰(xian)螺旋(xuan)霉素和肌(ji)昔等(deng)藥(yao)物(wu)。在(zai)(zai)(zai)(zai)(zai)(zai)肥料(liao)(liao)(liao)行業(ye)(ye)(ye)(ye)，用(yong)(yong)(yong)于(yu)制(zhi)(zhi)造鎂(mei)(mei)(mei)肥料(liao)(liao)(liao)，對植物(wu)的(de)生(sheng)(sheng)長起了很大的(de)作(zuo)(zuo)用(yong)(yong)(yong)。在(zai)(zai)(zai)(zai)(zai)(zai)食品工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)上硫(liu)酸(suan)鎂(mei)(mei)(mei)用(yong)(yong)(yong)于(yu)乳(ru)酸(suan)、味精等(deng)。在(zai)(zai)(zai)(zai)(zai)(zai)制(zhi)(zhi)革工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)中(zhong)用(yong)(yong)(yong)作(zuo)(zuo)填(tian)充劑；在(zai)(zai)(zai)(zai)(zai)(zai)電鍍工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)中(zhong)用(yong)(yong)(yong)做導電鹽；在(zai)(zai)(zai)(zai)(zai)(zai)印染(ran)上可(ke)用(yong)(yong)(yong)作(zuo)(zuo)織物(wu)上染(ran)劑、加重劑、鎂(mei)(mei)(mei)染(ran)劑。另外用(yong)(yong)(yong)于(yu)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)污水處理(li)，對廢液污水起到(dao)凝結和沉降(jiang)作(zuo)(zuo)用(yong)(yong)(yong)使其(qi)達(da)到(dao)排污標(biao)準。

一水硫酸鎂

應(ying)用：1.作(zuo)復合肥干燥劑(ji)

2.做農(nong)肥(fei)硫酸(suan)鎂作(zuo)(zuo)(zuo)為肥(fei)料，可(ke)直接用作(zuo)(zuo)(zuo)基肥(fei)，追肥(fei)和(he)(he)葉(xie)面肥(fei)，可(ke)單獨施用，也可(ke)作(zuo)(zuo)(zuo)為組分之一摻混使用。可(ke)在傳統農(nong)業領域(yu)，也可(ke)在高附加值的農(nong)業，花卉和(he)(he)無土栽(zai)培領域(yu)中應用。

3.飼(si)料添加劑（一(yi)般用量較(jiao)小(xiao)）

制備工藝：

1.硫酸法此法以白云石、蛇紋石、菱苦土為原料。

2.重結(jie)晶法鹽湖(hu)中(zhong)得(de)到的苦鹵自然蒸(zheng)(zheng)發濃縮成粗鎂(mei)(mei)(mei)(mei)(mei)(粗硫(liu)酸(suan)鎂(mei)(mei)(mei)(mei)(mei))。以粗鎂(mei)(mei)(mei)(mei)(mei)為(wei)原料，在80～90℃下(xia)加水溶(rong)化，然后在60～70℃溫度下(xia)澄清，在20～25℃冷卻結(jie)晶、經離(li)心分(fen)離(li)，干(gan)燥，制(zhi)得(de)工(gong)業硫(liu)酸(suan)鎂(mei)(mei)(mei)(mei)(mei)成品。將工(gong)業用硫(liu)酸(suan)鎂(mei)(mei)(mei)(mei)(mei)浸入(ru)蒸(zheng)(zheng)餾水，用硫(liu)酸(suan)調節Ph值，離(li)心分(fen)離(li)、干(gan)燥脫水經再結(jie)晶，制(zhi)得(de)硫(liu)酸(suan)鎂(mei)(mei)(mei)(mei)(mei)。

3.海水曬(shai)鹽(yan)苦鹵(lu)法海水曬(shai)鹽(yan)得苦鹵(lu)，用(yong)(yong)兌鹵(lu)法蒸發后(hou)，產出(chu)高溫鹽(yan)，其組(zu)成為MgSO4＞30%、NaCI＜35%、MgCl2約為7%、KCl約為0.5%。苦鹵(lu)可用(yong)(yong)200g/L的MgCl2溶(rong)液(ye)(ye)在48℃浸溶(rong)，NaCl溶(rong)解較(jiao)少，而MgSO4溶(rong)解較(jiao)多。分離后(hou)，浸液(ye)(ye)冷卻至(zhi)10℃便(bian)析出(chu)粗的MgSO4•7H2O，經二次重結晶得成品。

無(wu)水硫酸鎂(mei)CAS7487-88-9國標

性狀(zhuang)：外觀為白(bai)色粉末。

應(ying)用(yong)： 農業上用(yong)作(zuo)鎂肥增加農作(zuo)物產(chan)量。