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| International Standard Category: Chemical reagents |
GB 621-1993 Chemical reagent. Hydrobromic acid
化学试剂 氢溴酸;
| Category No.: | 71.040.30 | Valid Status: | superseded |
| Issued Organization: | China Petroleum and Chemical Industry Federation | Issued Date: | 1993-3-1 |
| Implemented Date: | 1993-1-2 | Abolished Date: | 2016-02-01 |
| Superseded Standard.: | GB/T 621-2015 Chemical reagent―Hydrobromie acid |
Superseded Date: | 2016-2-1 |
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