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  East India chemical  RXSOl Descaling Liquid is a simple to utilize corrosive compound for expelling water scale and iron dioxide stores. It is repressed to secure metal surfaces. It works by assaulting the basic earth stores that can be framed on metal surfaces. 
It must not be utilized on zinc, aluminum, stainless steel, excited materials or cast press. 
Uses 
For the expulsion of scale from: 
• Boilers 
• Condensers 

Potassium hydrogen phthalate often called simply KHP, is an acidic salt compound. It forms a white powder, colorless crystals, a colorless solution, and an ionic solid that is the monopotassium salt of phthalic acid. KHP is slightly acidic, and it is often used as a primary standard for acid-base titrations because it is solid and air-stable, making it easy to weigh accurately. It is not hygroscopic. It is also used as a primary standard for calibrating pH meters because, besides the properties just mentioned, its pH in solution is very stable.

Hypophosphorous acid is a phosphorus oxoacid and a powerful reducing agent with molecular formula H3PO2. Inorganic chemists refer to the free acid by this name (also as "HPA"), or the acceptable name of phosphinic acid. It is a colorless low-melting compound, which is soluble in water, dioxane, and alcohols. The formula for hypophosphorous acid is generally written H3PO2, but a more descriptive presentation is HOP(O)H2 which highlights its monoprotic character.