INFLUENCE OF ADDITIVES ON STABILITY OF TRISODIUMPHOSPHATE SATURATED SOLUTION
Influence of various additives namely organic and inorganic acids, multinuclear spirits and polymeric organic compounds on stability of the trisodiumphosphate saturated solution at 20°C is investigated. It is established that stability of a solution depends on type, quantity and chemical structure of the compounds used as additives. It is shown that the three-basic acids (lemon and boric) have the greatest stabilising effect. On the basis of experimental data it is offered structure of the solution containing Na 3PO 4, lemon acid, nonionic surfactant, water. The solution is steady against to crystallize and it have high degreasing action at cleaning of a metal surface (cleaning degree reaches 99,8% at 30°С and 97,0% at 20°С) not causing corrosion of the surface.