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

工業七水硫酸鎂國標

化學性質：

為白色或的針狀(zhuang)或斜柱狀(zhuang)結(jie)(jie)(jie)晶體，無(wu)臭(chou)﹑涼并微苦，分(fen)子量: 246.47，比重1.68，易(yi)溶(rong)于(yu)水，微溶(rong)于(yu)乙醇和甘油(you)，在67.5℃溶(rong)于(yu)自身的結(jie)(jie)(jie)晶水中。受熱分(fen)解，70﹑80℃是失(shi)去(qu)四(si)分(fen)子的結(jie)(jie)(jie)晶水。月200℃失(shi)去(qu)結(jie)(jie)(jie)晶水成(cheng)無(wu)水物。在空氣（干燥）中易(yi)風(feng)化(hua)為粉狀(zhuang)，加熱時(shi)逐漸脫去(qu)結(jie)(jie)(jie)晶水變(bian)為無(wu)水硫酸鎂(mei)。七水硫酸鎂(mei)因為不(bu)容(rong)易(yi)溶(rong)解，比無(wu)水硫酸鎂(mei)更容(rong)易(yi)稱量，便于(yu)在工業(ye)中進行的定量控制(zhi)。

分類：

硫(liu)酸(suan)鎂常指(zhi)七水(shui)硫(liu)酸(suan)鎂（因為它不容易溶解，比(bi)無水(shui)硫(liu)酸(suan)鎂容易稱量(liang)(liang)，便(bian)于在工業(ye)中進(jin)行的定量(liang)(liang)控制。）另外還(huan)有(you)一水(shui)、二(er)水(shui)、三水(shui)、無水(shui)硫(liu)酸(suan)鎂。

七水硫酸(suan)鎂有工業級和飼(si)料級，顆粒(li)狀(zhuang)，根據大小有0.1-1mm,1-3mm,2-4mm三種。

其他如(ru)無水(shui)(shui)、一水(shui)(shui)、二(er)水(shui)(shui)、三水(shui)(shui)硫(liu)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)(yu)微生(sheng)(sheng)物(wu)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)(ye)、輕工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)(ye)、化(hua)(hua)學工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)(ye)、印染工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)(ye)、制(zhi)(zhi)藥工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)(ye)、電鍍(du)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)(ye)、冶煉工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)(ye)。在(zai)(zai)(zai)農業(ye)(ye)(ye)(ye)(ye)(ye)上(shang)(shang)(shang)用(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)肥料；可作(zuo)飼料添加(jia)劑(ji)(ji) ；用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)(yu)火(huo)柴、瓷器、玻璃(li)、顏(yan)料、ABS樹脂(zhi)的(de)(de)制(zhi)(zhi)造；在(zai)(zai)(zai)防(fang)火(huo)材料方面用(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)丙烯(xi)酸(suan)(suan)脂(zhi)樹脂(zhi)等(deng)塑料的(de)(de)阻燃劑(ji)(ji)；用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)(yu)污(wu)水(shui)處理(li)。七水(shui)硫(liu)酸(suan)(suan)鎂(mei)(mei)在(zai)(zai)(zai)輕工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)(ye)中(zhong)用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)(yu)生(sheng)(sheng)產(chan)鮮(xian)酵母(mu)、味(wei)精、飲料；在(zai)(zai)(zai)化(hua)(hua)學工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)(ye)中(zhong)用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)(yu)制(zhi)(zhi)造硬脂(zhi)酸(suan)(suan)鎂(mei)(mei)、磷酸(suan)(suan)氫鎂(mei)(mei)，氧化(hua)(hua)鎂(mei)(mei)等(deng)其它鎂(mei)(mei)鹽和硫(liu)酸(suan)(suan)鉀(jia)、硫(liu)酸(suan)(suan)納等(deng)其它硫(liu)酸(suan)(suan)鹽；在(zai)(zai)(zai)防(fang)火(huo)材料中(zhong)用(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)填充劑(ji)(ji)耐熱性；在(zai)(zai)(zai)制(zhi)(zhi)藥上(shang)(shang)(shang)硫(liu)酸(suan)(suan)鎂(mei)(mei)加(jia)工(gong)(gong)(gong)(gong)(gong)為瀉藥、抗(kang)驚(jing)厥藥、三硅酸(suan)(suan)鎂(mei)(mei)、麥白(bai)霉素(su)、乙(yi)酰螺旋(xuan)霉素(su)和肌昔等(deng)藥物(wu)。在(zai)(zai)(zai)肥料行業(ye)(ye)(ye)(ye)(ye)(ye)，用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)(yu)制(zhi)(zhi)造鎂(mei)(mei)肥料，對植(zhi)物(wu)的(de)(de)生(sheng)(sheng)長起了很大的(de)(de)作(zuo)用(yong)(yong)(yong)(yong)(yong)(yong)。在(zai)(zai)(zai)食(shi)品(pin)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)(ye)上(shang)(shang)(shang)硫(liu)酸(suan)(suan)鎂(mei)(mei)用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)(yu)乳酸(suan)(suan)、味(wei)精等(deng)。在(zai)(zai)(zai)制(zhi)(zhi)革工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)(ye)中(zhong)用(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)填充劑(ji)(ji)；在(zai)(zai)(zai)電鍍(du)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)(ye)中(zhong)用(yong)(yong)(yong)(yong)(yong)(yong)做導電鹽；在(zai)(zai)(zai)印染上(shang)(shang)(shang)可用(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)織物(wu)上(shang)(shang)(shang)染劑(ji)(ji)、加(jia)重劑(ji)(ji)、鎂(mei)(mei)染劑(ji)(ji)。另外用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)(yu)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)(ye)污(wu)水(shui)處理(li)，對廢液污(wu)水(shui)起到凝(ning)結和沉降作(zuo)用(yong)(yong)(yong)(yong)(yong)(yong)使其達到排(pai)污(wu)標準(zhun)。

一水硫酸鎂

應用(yong)：1.作復合肥干燥劑

2.做農肥(fei)(fei)(fei)硫酸鎂作為肥(fei)(fei)(fei)料，可直接用(yong)作基肥(fei)(fei)(fei)，追肥(fei)(fei)(fei)和(he)葉(xie)面(mian)肥(fei)(fei)(fei)，可單獨(du)施用(yong)，也可作為組分之一摻混使用(yong)。可在傳(chuan)統(tong)農業(ye)(ye)領域(yu)，也可在高附加值的農業(ye)(ye)，花卉和(he)無土栽(zai)培領域(yu)中應用(yong)。

3.飼料添(tian)加劑(ji)（一(yi)般用量較小）

制備工藝：

1.硫(liu)酸法此法以(yi)白(bai)云石、蛇紋石、菱(ling)苦土(tu)為原料。

2.重結(jie)晶(jing)法(fa)鹽湖中得到的苦(ku)鹵自(zi)然(ran)蒸(zheng)發濃縮(suo)成粗(cu)鎂(mei)(粗(cu)硫(liu)(liu)酸鎂(mei))。以粗(cu)鎂(mei)為原料，在(zai)80～90℃下加水(shui)溶化，然(ran)后在(zai)60～70℃溫(wen)度下澄(cheng)清，在(zai)20～25℃冷卻結(jie)晶(jing)、經離(li)心分(fen)離(li)，干燥，制得工業(ye)硫(liu)(liu)酸鎂(mei)成品。將工業(ye)用硫(liu)(liu)酸鎂(mei)浸入蒸(zheng)餾水(shui)，用硫(liu)(liu)酸調節Ph值，離(li)心分(fen)離(li)、干燥脫水(shui)經再(zai)結(jie)晶(jing)，制得硫(liu)(liu)酸鎂(mei)。

3.海(hai)水(shui)曬(shai)鹽苦(ku)鹵(lu)法(fa)海(hai)水(shui)曬(shai)鹽得苦(ku)鹵(lu)，用兌鹵(lu)法(fa)蒸發后，產出高溫鹽，其組成(cheng)為MgSO4＞30%、NaCI＜35%、MgCl2約(yue)為7%、KCl約(yue)為0.5%。苦(ku)鹵(lu)可用200g/L的MgCl2溶液在48℃浸溶，NaCl溶解(jie)較少，而MgSO4溶解(jie)較多(duo)。分離后，浸液冷(leng)卻至10℃便析(xi)出粗的MgSO4•7H2O，經二次重結(jie)晶得成(cheng)品。

無(wu)水(shui)硫(liu)酸鎂CAS7487-88-9國標

性狀：外觀為白色(se)粉末。

應用(yong)： 農(nong)業上用(yong)作(zuo)鎂(mei)肥增加農(nong)作(zuo)物產量。