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| International Standard Category: Chemical reagents |
GB/T 631-1989 Chemical reagent; Ammonia solution(25%)
化学试剂 氨水 ;
| Category No.: | 71.040.30 | Valid Status: | superseded |
| Issued Organization: | China petroleum and chemical industry association | Issued Date: | 1989-03-31 |
| Implemented Date: | 1989-1-2 | Abolished Date: | |
| Superseded Standard.: | GB/T 631-2007 Chemical reagent - Ammonia solution |
Superseded Date: | 2008-4-1 |
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