| Appearance | Clear colourless liquid with a pungent odour | 
			| Assay (acidimetric) | 28.0 - 30.0% | 
			| Iron (Fe) | Max 0.0005% | 
			| Heavy metal (as Pb) | Max 0.0001% | 
			| Substance reducing KMnO4 (as O) | Max 0.0008% | 
			| Chloride (Cl) | Max 0.002% | 
			| Sulphate (SO4) | Max 0.003% | 
			| Residue on ignition (as SO4) | Max 0.003% |