Chinese name: hydrochloric acid
Foreign name: hydrochloric acid
Alias: hydrochloric acid
Chemical formula: HCl
CAS NO: 7647-01-1
Nature and use: colorless liquid. Irritating odor. It is corrosive and emits smoke in the air. Used in metallurgy, mining, inorganic chlorine products, metal cleaners.
Synthetic hydrochloric acid quality standards: GB 320-93
| Indicator name/level | Superior grade | First grade | Qualified product |
| Total acidity（HCI）% | 31.0 | 31.0 | 31.0 |
| Iron（Fe）%≤ | 0.001 | ||
| Sulfate（以H2SO4计）%≤ | 0.005 | 0.03 | - |
| Arsenic（AS）%≤ | 0.0001 | 0.0001 | 0.0001 |
| Burning residue%≤ | 0.08 | 0.10 | 0.15 |
| Oxide（In terms of CI）%≤ | 0.005 | 0.008 | 0.010 |