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International Standard Category: Chemical reagents

GB/T 661-1992    Chemical reagents;Ammonium ferrous sulfate
化学试剂 六水合硫酸铁(Ⅱ)铵(硫酸亚铁铵) ;
Category No.:71.040.30 Valid Status:superseded
Issued Organization:China Oil and Chemical Industry Association Issued Date:1992-09-01
Implemented Date:1993-7-1 Abolished Date:
Superseded Standard.:GB/T 661-2011 Chemical reagent—Ammonium iron(Ⅱ) sulfate hexahydrate
Superseded Date:2011-12-1
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