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 |