元(Yuan)明(Ming)粉(Fen)
元(Yuan)明(Ming)粉(Fen)分(Fen)子(Zi)式(Shi): Na2SO4
分(Fen)子(Zi)量(Liang):142.04
CAS NO: 7757-82-6
是(Shi)白(Bai)色(Se)细(Xi)颗(Ke)粒(Li)结(Jie)晶(Jing)或(Huo)粉(Fen)末(Mo),(?)有(You)吸(Xi)湿(Shi)性(Xing),(?)易(Yi)溶(Rong)于(Yu)水(Shui),(?)水(Shui)溶(Rong)液(Ye)呈(Cheng)中(Zhong)性(Xing)。(?)溶(Rong)于(Yu)甘(Gan)油(You),(?)不(Bu)溶(Rong)解(Jie)于(Yu)醇(Chun)。(?)暴(Bao)露(Lu)于(Yu)空(Kong)气(Qi)中(Zhong)会(Hui)逐(Zhu)渐(Jian)吸(Xi)收(Shou)1分(Fen)子(Zi)的(De)水(Shui)。(?)纯(Chun)度(Du)高(Gao)、(?)颗(Ke)粒(Li)细(Xi)的(De)无(Wu)水(Shui)物(Wu)称(Cheng)为(Wei)元(Yuan)明(Ming)粉(Fen)。(?)硫(Liu)酸(Suan)钠(Na)可(Ke)形(Xing)成(Cheng)七(Qi)水(Shui)物(Wu)和(He)十(Shi)水(Shui)物(Wu),(?)七(Qi)水(Shui)物(Wu)(Na2SO4.7H20)为(Wei)白(Bai)色(Se)斜(Xie)方(Fang)晶(Jing)体(Ti)。(?)加(Jia)热(Re)至(Zhi)24.4°C时(Shi)转(Zhuan)为(Wei)无(Wu)水(Shui)物(Wu)。(?)硫(Liu)酸(Suan)钠(Na)与(Yu)碳(Tan)在(Zai)高(Gao)温(Wen)反(Fan)应(Ying)时(Shi)被(Bei)还(Huan)原(Yuan)为(Wei)硫(Liu)化(Hua)钠(Na)。(?)
用(Yong)途(Tu):合(He)成(Cheng)洗(Xi)涤(Di)剂(Ji)用(Yong)作(Zuo)填(Tian)充(Chong)剂(Ji)。(?)用(Yong)于(Yu)硫(Liu)化(Hua)钠(Na)、(?)群(Qun)青(Qing)、(?)硅(Gui)酸(Suan)钠(Na)等(Deng)化(Hua)工(Gong)产(Chan)品(Pin)的(De)制(Zhi)造(Zao),(?)造(Zao)纸(Zhi)工(Gong)业(Ye)中(Zhong)用(Yong)于(Yu)制(Zhi)造(Zao)硫(Liu)酸(Suan)盐(Yan)纸(Zhi)浆(Jiang),(?)玻(Bo)璃(Li)工(Gong)业(Ye)中(Zhong)用(Yong)来(Lai)代(Dai)替(Ti)纯(Chun)碱(Jian),(?)染(Ran)料(Liao)工(Gong)业(Ye)中(Zhong)作(Zuo)填(Tian)充(Chong)剂(Ji)。(?)印(Yin)染(Ran)工(Gong)业(Ye)中(Zhong)用(Yong)作(Zuo)助(Zhu)染(Ran)剂(Ji),(?)医(Yi)药(Yao)工(Gong)业(Ye)中(Zhong)用(Yong)作(Zuo)缓(Huan)泻(Xie)剂(Ji)和(He)钡(Bei)盐(Yan)中(Zhong)毒(Du)的(De)解(Jie)毒(Du)剂(Ji)等(Deng)。(?)此(Ci)外(Wai),(?)在(Zai)合(He)成(Cheng)纤(Xian)维(Wei)、(?)制(Zhi)革(Ge)有(You)色(Se)冶(Ye)金(Jin)、(?)瓷(Ci)釉(You)、(?)肥(Fei)皂(Zao)等(Deng)的(De)制(Zhi)造(Zao)中(Zhong)也(Ye)有(You)应(Ying)用(Yong)。(?)

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