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International Standard Category: Chemical reagents

GB/T 656-1977    Chemical reagents--Ammonium dichromate
化学试剂 重铬酸铵 ;
Category No.:71.040.30 Valid Status:superseded
Issued Organization: Issued Date:1977-02-04
Implemented Date:1977-10-1 Abolished Date:
Superseded Standard.:GB/T 656-2003 Chemical reagent—Ammonium dichromate
Superseded Date:2004-5-1
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