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Boiler Water sludge is caused by the presence of small quantities of hardness salts and traces of suspended matter in operational steam boilers and feed waters.This sludge settles on the surface forming a hard scale which indirectly increases the maintenance costs, degrades the heat transfer efficiency and overall boiler efficency. Therefore in order to ensure the boiler system and operate at optimum effiency it is essential that correct water conditions are maintained at all times.

Sodium silicate is a white powder that is readily soluble in water, producing an alkaline solution. It is one of a number of related compounds which include sodium orthosilicate (Na4SiO4), sodium pyrosilicate (Na6Si2O7), and others. All are glassy, colourless, and soluble in water.

Sodium silicate is stable in neutral and alkaline solutions. In acidic solutions, the silicate ion reacts with hydrogen ions to form silicic acid, which when heated and roasted forms silica gel, a hard, glassy substance.

 Vizag Chemical Bis(2-ethylhexyl) phthalate (di-2-ethylhexyl phthalate, diethylhexyl phthalate, DEHP; dioctyl phthalate, DOP) is an organic compound with the formulaC6H4(CO2C8H17)2. DEHP is the most common member of the class of phthalates, which are used as plasticizers. It is the diester of phthalic acid and the branched-chain 2-ethylhexanol. This colorless viscous liquid is soluble in oil, but not in water.