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

工業七水硫酸鎂國標

化學性質：

為白色或(huo)的(de)(de)針狀或(huo)斜柱(zhu)狀結晶(jing)體，無(wu)臭﹑涼并微苦，分(fen)子(zi)量: 246.47，比(bi)重1.68，易(yi)溶于水(shui)(shui)(shui)，微溶于乙醇(chun)和甘油，在67.5℃溶于自身的(de)(de)結晶(jing)水(shui)(shui)(shui)中。受(shou)熱(re)分(fen)解(jie)(jie)，70﹑80℃是(shi)失去四(si)分(fen)子(zi)的(de)(de)結晶(jing)水(shui)(shui)(shui)。月200℃失去所有的(de)(de)結晶(jing)水(shui)(shui)(shui)成(cheng)無(wu)水(shui)(shui)(shui)物。在空氣（干燥）中易(yi)風化為粉狀，加熱(re)時(shi)逐(zhu)漸脫去結晶(jing)水(shui)(shui)(shui)變為無(wu)水(shui)(shui)(shui)硫酸鎂，七水(shui)(shui)(shui)硫酸鎂因為不容(rong)易(yi)溶解(jie)(jie)，比(bi)無(wu)水(shui)(shui)(shui)硫酸鎂更(geng)容(rong)易(yi)稱量，便于在工業(ye)中進行的(de)(de)定量控制(zhi)。

分類：

硫(liu)酸(suan)鎂(mei)常指七水(shui)(shui)硫(liu)酸(suan)鎂(mei)（因(yin)為(wei)它(ta)不容(rong)易溶解(jie)，比(bi)無水(shui)(shui)硫(liu)酸(suan)鎂(mei)更容(rong)易稱量，便(bian)于在工(gong)業中進行的定量控(kong)制(zhi)。）另(ling)外還有一水(shui)(shui)、二水(shui)(shui)、三水(shui)(shui)、無水(shui)(shui)硫(liu)酸(suan)鎂(mei)。

七水硫酸(suan)鎂有工(gong)業級和(he)飼料(liao)級，顆(ke)粒狀，根(gen)據大小有0.1-1mm,1-3mm,2-4mm三種。

其(qi)他如無(wu)水(shui)(shui)、一水(shui)(shui)、二水(shui)(shui)、三(san)水(shui)(shui)硫酸鎂均為粉末狀。

常用包裝：

25Kg/袋

主要用途：

主要用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)醫(yi)藥(yao)、微生物工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)、輕工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)、化學工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)、印染工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)、制(zhi)(zhi)藥(yao)工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)、電鍍(du)工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)、冶煉工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)。在(zai)(zai)農業(ye)(ye)(ye)(ye)上(shang)用(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)(zuo)(zuo)肥料；可(ke)作(zuo)(zuo)(zuo)飼料添加劑 ；用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)火柴、瓷器、玻璃、顏料、ABS樹脂(zhi)(zhi)的(de)(de)制(zhi)(zhi)造；在(zai)(zai)防火材料方面用(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)(zuo)(zuo)丙(bing)烯酸(suan)(suan)(suan)(suan)(suan)脂(zhi)(zhi)樹脂(zhi)(zhi)等(deng)(deng)塑料的(de)(de)阻(zu)燃劑；用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)污(wu)水處理。七水硫酸(suan)(suan)(suan)(suan)(suan)鎂(mei)(mei)在(zai)(zai)輕工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)中用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)生產(chan)鮮酵母、味精、飲料；在(zai)(zai)化學工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)中用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)制(zhi)(zhi)造硬脂(zhi)(zhi)酸(suan)(suan)(suan)(suan)(suan)鎂(mei)(mei)、磷酸(suan)(suan)(suan)(suan)(suan)氫鎂(mei)(mei)，氧(yang)化鎂(mei)(mei)等(deng)(deng)其它(ta)鎂(mei)(mei)鹽和硫酸(suan)(suan)(suan)(suan)(suan)鉀、硫酸(suan)(suan)(suan)(suan)(suan)納等(deng)(deng)其它(ta)硫酸(suan)(suan)(suan)(suan)(suan)鹽；在(zai)(zai)防火材料中用(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)(zuo)(zuo)填(tian)(tian)充劑增強耐熱(re)性；在(zai)(zai)制(zhi)(zhi)藥(yao)上(shang)硫酸(suan)(suan)(suan)(suan)(suan)鎂(mei)(mei)加工(gong)(gong)(gong)為瀉藥(yao)、抗驚厥藥(yao)、三(san)硅酸(suan)(suan)(suan)(suan)(suan)鎂(mei)(mei)、麥白霉素(su)、乙(yi)酰螺旋霉素(su)和肌昔等(deng)(deng)藥(yao)物。在(zai)(zai)肥料行業(ye)(ye)(ye)(ye)，用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)制(zhi)(zhi)造鎂(mei)(mei)肥料，對(dui)植物的(de)(de)生長起(qi)了很大(da)的(de)(de)作(zuo)(zuo)(zuo)用(yong)(yong)(yong)(yong)(yong)(yong)。在(zai)(zai)食(shi)品工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)上(shang)硫酸(suan)(suan)(suan)(suan)(suan)鎂(mei)(mei)用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)乳酸(suan)(suan)(suan)(suan)(suan)、味精等(deng)(deng)。在(zai)(zai)制(zhi)(zhi)革工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)中用(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)(zuo)(zuo)填(tian)(tian)充劑；在(zai)(zai)電鍍(du)工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)中用(yong)(yong)(yong)(yong)(yong)(yong)做導電鹽；在(zai)(zai)印染上(shang)可(ke)用(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)(zuo)(zuo)織物上(shang)染劑、加重劑、鎂(mei)(mei)染劑。另外(wai)用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)污(wu)水處理，對(dui)廢(fei)液污(wu)水起(qi)到凝結和沉降作(zuo)(zuo)(zuo)用(yong)(yong)(yong)(yong)(yong)(yong)使其達到排污(wu)標準。

一水硫酸鎂

應用(yong)：1.作復合肥干燥劑

2.做(zuo)農(nong)肥(fei)硫酸鎂作為肥(fei)料(liao)，可(ke)(ke)直(zhi)接用作基肥(fei)，追肥(fei)和葉面(mian)肥(fei)，可(ke)(ke)單獨施用，也(ye)可(ke)(ke)作為組分之一摻(chan)混使用。可(ke)(ke)在(zai)傳(chuan)統農(nong)業領域，也(ye)可(ke)(ke)在(zai)高附加值的精(jing)細農(nong)業，花卉和無土栽培領域中應用。

3.飼料添加劑（一般用量較小）

制備工藝：

1.硫酸法(fa)此法(fa)以白云(yun)石、蛇紋石、菱苦土為原料。

2.重結(jie)晶(jing)法鹽湖中得到的苦鹵自然蒸(zheng)發濃縮成粗(cu)鎂(粗(cu)硫(liu)(liu)(liu)(liu)酸(suan)鎂)。以粗(cu)鎂為原料，在80～90℃下加水溶化(hua)，然后在60～70℃溫度下澄清，在20～25℃冷卻結(jie)晶(jing)、經離心(xin)分(fen)離，干燥(zao)，制(zhi)得工業硫(liu)(liu)(liu)(liu)酸(suan)鎂成品。將工業用(yong)硫(liu)(liu)(liu)(liu)酸(suan)鎂浸入蒸(zheng)餾水，用(yong)硫(liu)(liu)(liu)(liu)酸(suan)調節Ph值，離心(xin)分(fen)離、干燥(zao)脫水經再結(jie)晶(jing)，制(zhi)得硫(liu)(liu)(liu)(liu)酸(suan)鎂。

3.海(hai)水(shui)曬鹽(yan)苦鹵法海(hai)水(shui)曬鹽(yan)得(de)(de)苦鹵，用兌(dui)鹵法蒸發后，產出高溫鹽(yan)，其(qi)組(zu)成(cheng)(cheng)為MgSO4＞30%、NaCI＜35%、MgCl2約為7%、KCl約為0.5%。苦鹵可(ke)用200g/L的MgCl2溶(rong)液在48℃浸溶(rong)，NaCl溶(rong)解較少，而MgSO4溶(rong)解較多(duo)。分離后，浸液冷(leng)卻至10℃便析出粗(cu)的MgSO4•7H2O，經二次重結晶得(de)(de)成(cheng)(cheng)品。

無水硫酸鎂CAS7487-88-9國標

性狀：外觀為白色粉末。

應用： 農業上用作鎂肥增(zeng)加(jia)農作物(wu)產量。