Birlasulf®-SS, Sodium sulphite
Sodium sulphite is a white, odourless soluble crystalline powder with a sulphur di oxide content of around 49.5 per cent by weight. The solution is alkaline in nature.

It is used in a wide variety of applications some of which are, for water treatment and desalination plants as an antichlor, for the reduction of waste water in chrome plating industry, as a preservative in Tri Nitro Toluene (TNT) manufacture, as a bleaching agent in pulp mills, Detergent and leather, for the manufacture of sodium thiosulfate, in power plants and pulp mills for scrubbing sulfur dioxide gas, as an oxygen scavenger in low pressure boilers and in the manufacture of photographic chemicals.

Birlasulf-SM®, Sodium metabisulphite
Sodium metabisulphite, also known as sodium pyrosulphite, is a white to yellowish, soluble crystalline powder with an odour of sulphur di oxide, containing around 65.5 per cent of sulphur di oxide by weight. It is a strong reducing agent.

Some of its major applications are, as a preservative in starch and food industry, to control Melanisis (black spot) in shrimps, for fermentation in wine industry, as an antichlor in chemical industry and as a redox catalyst in acrylic fiber industry. Sodium metabisulphite is also used as a reducing agent in the purification of aldehydes and ketones, for the manufacture of sulphonated oil and sulphonated resin, for the detoxification of cyanide in Gold Ore processing plants and in the manufacture of photographic chemicals.

Birlasol®-35, Sodium bisulphite
Sodium bisulphite, also known as sodium hydrogen sulphite, is a clear, colourless to yellowish solution containing 34 to 36 per cent sodium metabisulphite or approximately 23 to 24 per cent sulphur di oxide by weight. It has an odour of sulphur di oxide. It is a strong reducing agent.