六水硫酸亞鐵銨的化學(xué)性質(zhì),質(zhì)量標(biāo)準(zhǔn)及用途

性狀 淡藍(lán)綠色結(jié)晶或粉末。密度:1.86 熔點(diǎn):100 °C (dec.)(lit.)在空氣中逐漸風(fēng)化及氧化。能溶于水，不溶于乙醇。淺藍(lán)綠色結(jié)晶或粉末，對(duì)光敏感.


質(zhì)量標(biāo)準(zhǔn)
項(xiàng)目Item 分析純 化學(xué)純
(AR) (CP)
含量［Fe(NH4)2(SO4)2·6H2O)Assay,% ≥99.5 99.0
pH(50g/L溶液，25℃) 3-5 3-5
水不溶物Insoluble matter in water,% ≤0.005 0.02
氯化物(Cl)Chloride,% ≤0.001 0.005
磷酸鹽(PO4)Phosphate,% ≤0.0005 0.002
錳(Mn)Manganese,% ≤0.05 --
高鐵(Fe)Ferric,% ≤0.01 0.02
銅(Cu)Copper,% ≤0.002 0.01
鋅(Zn)Zinc,% ≤0.005 0.02
鉛(Pb)Lead,% ≤0.002 0.004
氨水不沉淀物(以硫酸鹽計(jì))Substances not
precipitated by ammonia,% ≤0.1 0.2


ACS級(jí)
項(xiàng)目名稱Item ACS Grade
含量[Fe(NH4)2(SO4)2·6H2O]Assay 98.5-101.5%
水不溶物Insoluble matter in water ≤0.01%
磷酸鹽(PO4)Phosphate ≤0.003%
鈣(Ca)Calcium(Ca) ≤0.005%
銅(Cu)Copper(Cu) ≤0.003%
鎂(Mg)Magnesium(Mg) ≤0.002%
鉀(K)Potassium(K) ≤0.01%
鈉(Na)Sodium(Na) ≤0.02%
鋅(Zn)Zinc(Zn) ≤0.003%
高鐵(Fe3+)Ferric ion ≤0.01%



用途 用作分析試劑，測定鹵素時(shí)用作指示劑


危險(xiǎn)性質(zhì) RTECS號(hào) BR6500000
F 8-10-23
WGK Germany 1


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