supply of hydrochloric acid , hydrochloric acid , hydrochloric acid ( hcl ) 30% concentration ( technical grade ) , specific gravity at 27’c: min 1.145, max 1.153confirming to is: 265 / 1995 ( with latest amendment, if any ) having following specification:- color: light yellow hydrogen chloride: 30% by w / w hcl min iron: 10 mg / kg as fe max, oxidizing substance: 50mg / kg as cl2 max reducing substance: 50mg / kg as so2 max residue on evaporation: 100mg / kg max, sodium: 20mg / kg as na maximum free chlorine & bromine: 5 ppm as hcl max other specification: as per is: 265 / 1993 ( technical grade ) note:- ( i ) conc. of technical grade hcl less than 30% will not be acceptable. ( ii ) hcl shall be dispatched in suitable rubber lined tankers of approx 15-25 mt capacity, securely packed. the container shall be marked with caution note “corrosive handle with care”