Barium Chloride, Barium Carbonate, Barium Nitrate, Barium Hydroxide, Barium Sulphate, Sodium Hydro Sulphide, Sodium Sulphide Established in 1989, Chaitanya Chemicals today is the largest manufacturer of Barium Chloride (BaCl2) (15000 MT per annum) and Sodium Hydro Sulphide (NaHS) (10000 MT per annum) in India.