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三偏磷酸钠

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上海市

上海研域生物科技有限公司

产品型号:     厂商性质:生产厂家
上海市闵行区闵北路88弄1-17号、18-30号第13幢038室
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产品简介

三偏磷酸钠/磷酸三间酯/偏磷酸三钠/Trisodium trimetaphosphateCP,65%500克7785-84-4RT

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三偏磷酸钠
别名:磷酸三间酯;偏磷酸三钠
英文名称: Trisodium trimetaphosphate
其他英文名称: Sodium trimetaphosphate
三偏磷酸钠产品规格: CP,65%
包装:500克
CAS号:7785-84-4
Na3P3O9=305.89
级别:CP
含量:≥65.0%
水不溶物:≤1.0%
砷:≤0.0003%
氟化物:≤0.003%
重金属:≤0.001%
PH:5.0~9.0
鉴定方法:本品呈钠离子反应和磷酸盐反应。①钠盐反应:将铂丝用浓盐酸湿润后,蘸取本品少许,在无色火焰上燃烧,火焰呈鲜艳黄色(钠离子)。②磷酸盐反应:取本品中性溶液,加硝酸银溶液(20g/L),有浅黄色沉淀生成,分离沉淀,沉淀在氨溶液(2+3)或硝酸溶液(6 mol/L)中易溶解。
性状:结晶或结晶性粉末。易溶于水(21 g/100 mL),15水溶液pH值为6.0。在水溶液中加氯化钠可形成六水盐的结晶体,能与金属离子结合。熔点:627.6℃。
用途:生化研究。软水剂
保存:RT
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