supply of various chemicals for chemical cleaning of bearing cooling water system of hpcl vizag project , chemicals with tech specs , citric acid, % by mass ( as monohydrate ) min. 98.5% [ bis: 5464:1995 ] , inhibitor ( coroban- cb or coronil-92 b or rodine 92b or acibitor 92b ) , ammonia solution ( 25% min as nh3, sp gravity ~ 0.91 ) as per is 799 / 1990, ar grade , shmp ( sodium hexametaphosphate ) as po4 as per is:574, 1980 , organo phosphate as po4 ( hedp, 50-60% active acid content as per astm d515-72 ) , caustic soda flakes ( technical grade as per is:252 ( latest ) ) , renopol jet 100% , anti-foaming agent ( silicon base )