问题：求助急急急
类型：求助 (悬赏分:3分)
提问：bbjoy24
等级：▲
版块：分析化学(wangsui,maqinghe,peiliang,)
信誉：14%
回复：4
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时间：2008-11-10 11:29:52 编辑加入/取消收藏订制/取消短消息举报该贴

硫代硫酸钠与硫代硫酸钾的性质差别大么?

回复人：tangyyer,★★★★★ (有空来逛逛my blog: http://tangyyer.blog.hexun.com) 时间：2008-11-10 18:24:16 编辑

1楼

Sodium thiosulfate, JAN, USAN
Synonym(s): Sodothiol. Thiosulfuric acid disodium salt, 8CI. Sulfothiorine. Antichlor. Ametox. Sulfactol. NSC 45624
Chapman Hall Number: KBZ50-U
CAS Registry Number: 7772-98-7
Type of Compound Code(s): WC4500 XA1550 WC3400
Na2S2O3

Molecular Formula: Na2O3S2
Molecular Weight: 158.11
Accurate Mass: 157.908419
Percentage Composition: Na 29.08%; O 30.36%; S 40.56%
Source/Synthesis: Synth. by dehydration of the pentahydrate at 105. Alternatively formed by reaction of S2Cl2 with Na2O2 or by reduction of Na2S2O4 with sodium amalgam
Use/Importance: Commercially available
Biological Use/Importance: Cyanide antidote often administered with other antidotes, antifungal agent
Physical Description: Deliquescent, colourless, monoclinic cryst. Dec. on heating with ultimate formation of Na2SO4
Solubility: V. sol. H2O (231 g per 100 cm3 at 100); insol. EtOH
Other Data: Hf 1123 kJ mol1; Gf 1028 kJ mol1; S 155 J K1 mol1. Component of Komed and Tinver

回复人：tangyyer,★★★★★ (有空来逛逛my blog: http://tangyyer.blog.hexun.com) 时间：2008-11-10 18:24:38 编辑

2楼

Potassium thiosulfate (K2S2O3)
Synonym(s): Thiosulfuric acid, dipotassium salt, 8CI
Chapman Hall Number: LGQ77-I
CAS Registry Number: 10294-66-3
K2S2O3

Molecular Formula: K2O3S2
Molecular Weight: 190.327
Accurate Mass: 189.856299
Percentage Composition: K 41.09%; O 25.22%; S 33.70%
Source/Synthesis: Obt. by evaporating to dryness at 80, saturated aq. solns. of the hydrate
Use/Importance: Corrosion inhibitor; constit. of fertiliser mixtures, component of flue gas scrubbing solns.
Physical Description: Colourless powder; hygroscopic
Solubility: Sol. H2O
Other Data: Dec. on heating to form K2Sn (n = 3,4,5) which, in air, are oxidised to K2SO4

回复人：tangyyer,★★★★★ (有空来逛逛my blog: http://tangyyer.blog.hexun.com) 时间：2008-11-10 18:25:24 编辑	3楼
性质差别大小就看你的用途了。

回复人：bbjoy24,▲ (化学者) 时间：2008-11-10 21:19:56 编辑	4楼
已经打分了！

得分人：tangyyer :2,

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