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| International Standard Category: Chemical reagents |
GB 1256-1990 Working chemical－Arsenic trioxide
工作基准试剂(容量) 三氧化二砷 ;
| Category No.: | 71.040.30 | Valid Status: | superseded |
| Issued Organization: | CSBTS | Issued Date: | 1990-01-02 |
| Implemented Date: | 1991-1-2 | Abolished Date: | |
| Superseded Standard.: | GB 1256-2008 Working chemical—Arsenic trioxide |
Superseded Date: | 2009-6-1 |
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