铁氰化钾溶液必须先用现配吗?

2025-03-25 06:14:46
推荐回答(2个)
回答1:

最好不那样做,原因很多,主要是强氧化性,易于分解,且生成物有剧毒··

楼主现用现配才是对的!

下面附上铁氰化钾化学性质简介

铁氰化钾——又名赤血盐或高铁氰化钾。英文名:potassium ferrocyanide或, potash prus-siate.
化学式:K3[Fe(CN)6]
性 质:深红色斜方晶体,易溶于水,无特殊气味,能溶于水、丙酮,不溶于乙醇,100份水在摄氏零度时可溶解36份铁氰化钾,100度时可溶解77。5份!是一种强氧化剂。
用 途:1,卤化银彩色感光材料冲洗的漂白剂。2,黑白感光材料的减薄剂。3,黑白照片调棕色的漂白剂。目前广泛采用的高温快速彩色冲洗工艺已不使用。但彩色电影胶片的冲洗仍大量使用。主要用于制造油漆、油墨、色素、制药、金属热处理、食盐防结块剂,食品添加剂以及钢铁工业 和揉革等等。
铁氰化钾在紫外光或日光照射下,或在酸性介质中(例如20%的硫酸)并受热,会分解出剧毒的氢氰酸!

(也有人认为铁氰化钾是无毒的,因为在这个配位化合物里铁离子和剧毒的氰根结合成牢固的铁氰根,在水溶液中是不会分解的。只有在高温灼烧的情况下才能发生分解,生成剧毒的氰化物。)
储运:通风,干燥,避光保储;不可与酸共储,混运。

所以配置溶液的话,最好还是现配的好啊 ``

回答2:

铁氰化钾——K3[Fe(CN)6]---性质稳定---不易变质!

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