| Synonyms | Hydrogen chloride, muriatic acid |
| Definition | |
| Chemical name | Hydrochloric acid |
| Einecs | 231-595-7 |
| Chemical formula | HCl |
| Molecular weight | 36,46 |
| Assay | Hydrochloric acid is commercially available in varying concentrations. Concentrated hydrochloric acid contains not less than 35,0 % HCl |
| Description | Clear, colourless or slightly yellowish, corrosive liquid having a pungent odour |
| Identification | |
A.Positive tests for acid and for chloride | |
B.Solubility | Soluble in water and in ethanol |
| Purity | |
| Total organic compounds | Total organic compounds (non-fluorine containing): not more than 5 mg/kg |
| Benzene: not more than 0,05 mg/kg |
| Fluorinated compounds (total): not more than 25 mg/kg |
| Non-volatile matter | Not more than 0,5 % |
| Reducing substances | Not more than 70 mg/kg (as SO2) |
| Oxidising substances | Not more than 30 mg/kg (as Cl2) |
| Sulphate | Not more than 0,5 % |
| Iron | Not more than 5 mg/kg |
| Arsenic | Not more than 1 mg/kg |
| Lead | Not more than 1 mg/kg |
| Mercury | Not more than 1 mg/kg |
