procurement of heavy chemicals viz. caustic soda lye (47.5 percent), hcl acid (30 percent), liquid chlorine and aluminium sulphate (non-ferric) procurement of heavy chemical viz. caustic soda lye (47.5 percent), hcl acid (30 percent), liquid chlorine and aluminium sulphate (non-ferric) , caustic soda lye 47.5% as per is-252/1993 (with amended up to date) min. total alkalinity 47.50% ± 0.2% naoh. material below 45% naoh shall not be accepted. however the payment shall be made on prorata basis if alkalinity is in the range of 45% to 47.5%. 150 mt (on 47.5% basis) or 71.25 mt (on 100% basis) for ghtp , caustic soda lye 47.5%as per is-252/1993 (with amended up to date) min. total alkalinity 47.50% ± 0.2% naoh. material below 45% naoh shall not be accepted. however the payment shall be made on prorata basis if alkalinity is in the range of 45% to 47.5%. 190 mt(on 47.5% basis) or 90.25 mt (on 100% basis) for ggsstp , hydrochloric acid 30%as per is-265/ 1993 (as amended up to date) minimum acidity 30% as hcl, by mass. material below 27% acidity shall not be accepted. however the payment shall be made on prorata basis if the acidity is in the range of 27-30% for ghtp , hydrochloric acid 30%as per is-265/ 1993 (as amended up to date) minimum acidity 30% as hcl, by mass. material below 27% acidity shall not be accepted. however the payment shall be made on prorata basis if the acidity is in the range of 27-30% for ggsstp , liquid chlorine technical grade as per is: 646/1986. material should be clear yellow and when evaporated over a clean white tile should leave no residue.for ghtp , liquid chlorine technical grade as per is: 646/1986. material should be clear yellow and when evaporated over a clean white tile should leave no residue.for ggsstp , aluminium sulphate (non-ferric).powder form grade technical (as per is-260/2001 as amended up to date) packing: in powder form, packed in 40-50 kg. hdpe (double polythene lined high density) new bags double stitched with nylon thread. 1) alumina as a12o3 percent by weight as on received basis: 17% (min.) however the payment shall be made on prorate basis if a12o3% is in between 14-17%material below 14% a12o3 by weight shall not be accepted. 2) insoluble matter percent by weight: 0.3% (max.) 3) ph of 5% solution : 2.8 (min) +/- 5% variation allowed in quantity and shall be paid actually. forggsstp