Mercury chlorideEdit

Synonyms Calomel, Mercurous chloride.

Formula: Hg2Cl2

Description: Mercury(I)chloride is a dense yellowish-white solid that was once used as a chlorine donor  for enriching colour, but owing to it's high toxicity and relatively low chlorine content (15%) when compared to the likes of polyvinyl chloride  and parlon , it hasn't been widely used in around 40 years.

Hazards: Mercury(I)chloride is toxic and precautions should be taken to minimise exposure by any route.

Hazard Symbols: Xn