annual rate contract of chemicals for laboratory at hurl-gorakhpur. - 2, 2, 4-trimethylpentane, 99.5% ar / acs , ar grade , cas no540-84-1 ( iso octane ) 3 acetic acid glacial er , ar / ergrade , cas no64-19-7 4 acetone er , ar grade , cas no67-64-1 comercial 5 acetonitrile hplc grade, cas no75-05-8 6 activated charcoal phospherous free, ar grade , cas no7440-44-0 7 alpha-d ( + ) -glucose, 99+%, anhydrous , ar grade , cas no492-62-6 8 ammonium acetate , ar grade , cas no631-61-8 9 ammonium chloride er , ar grade , cas no12125-02-9 10 ammonium ferrous sulphate hexa hydrate er , ar grade , cas no7783-85-9 11 ammonium molybdate tetrahydrate ( ammonium hepta molybdate ) er, ar grade , cas no12054-85-2 12 ammonium per sulphate ( ammonium peroxydisulphate ) er, ar grade , cas no7727-54-0 13 ammonium purpurate ( murexide ) , ar / sq grade , cas no3051-09-0 14 ammonium sulphate er , ar grade , cas no7783-20-2 15 arsenic trioxide 99% ar , ar grade , cas no1327-53-3 16 barium chloride dihydrate er , ar grade , cas no10326-27-9 17 benzene 99.5% ar, ar grade , cas no71-43-2 18 bromo cresol green indicator powder, ar grade , cas no76-60-8 19 bromo cresol purple indicator powder, ar grade , cas no115-40-2 20 bromo phenol blue indicator powder, ar grade , cas no115-39-9 21 bromo thymol blue indicator powder , ar grade , cas no76-59-5 22 calcium carbonate precipitated 99% , ar grade , cas no471-34-1 23 calcium chloride ( fused ) sq , sq grade , cas no10043-52-4 24 calcium sulphate dihydrate , grade , cas no10101-41-4 25 chloroform er , ar grade , cas no67-66-3 26 chromotropic acid disodium salt 98.5% ar / acs , ar grade , cas no5808-22-0 27 cupric chloride dihydrate sq , ar grade , cas no10125-13-0 28 cupric sulphate pentahydrate er , ar grade , cas no7758-99-8 29 cuprous chloride 97% , ar / sq grade , cas no7758-89-6 30 cyclohexane er, ar grade , cas no110-82-7 31 dextrose anhydrous er , ar grade , cas no50-99-7 32 di sodium hydrogen ortho phosphate anhydrous er , ar grade , cas no7558-79-4 33 diethyl ether , lr / ar grade , cas no60-29-7 34 di-potassium hydrogen ortho phosphate er, ar grade , cas no7758-11-4 35 edta disodium salt dihydrate er , ar grade , cas no6381-92-6 36 eriochrome black-t ( solochrome black-t, ar grade , cas no1787-61-7 37 ethanol ar, ar grade , cas no64-17-5 38 ferric chloride hexahydrate 97% ar / acs , ar grade , cas no10025-77-1 39 ferrous sulphate heptahydrate 99% ar / acs , ar grade , cas no7782-63-0 40 formaldehyde solution 37-41% w / v er, ar grade , cas no50-00-0 41 glycerol sq ( glycerine ) , ar / sq grade , cas no56-81-5 42 hexamine ( hexamethylen-etetramine hmta ) , ar grade , cas no100-97-0 43 hydrazinium sulphate er , ar grade , cas no10034-93-2 44 hydrochloric acid er , ar grade , cas no7647-01-0 45 hydroxy naphthol blue indicator, ar grade , cas no63451-35-4 46 indigo carmine ar , ar grade , cas no860-22-0 47 iso-amyl alcohol 99% , ar grade , cas no123-51-3 48 iso-propyl alcohol ( propan-2-ol ) er , ar grade , cas no67-63-0 49 eosin methylene-blue, ar grade , cas no1628709 50 liq. ammonia solution 0.91 ( about 25% nh3 ) er , ar grade , cas no1336-21-6 51 manganese ( ii ) sulphate monohydrate 99% ar / acs , grade , cas no 10034-96-5 52 mercuric chloride, ar grade , cas no7487-94-7 53 mercuric nitrate monohydrate, ar grade , cas no7783-34-8 54 mercuric oxide red sq , ar / sq grade , cas no21908-53-2 55 mercuric sulphate, ar grade , cas no7783-35-9 56 mercuric thiocyanate 99% , ar grade , cas no592-85-8 57 methanol dried, ar grade , cas no67-56-1 58 methyl orange indicator powder, ar grade , cas no547-58-0 59 methyl red indicator powder , ar grade , cas no493-52-7 60 methyl thymol blue ar , ar grade , cas:1945-77-3 61 methylene blue staining powder , ar grade , cas no61-73-4 62 metol 99% acs , ar grade , cas no55-55-0 63 n, n-dimethyl p-phenylenediamine dihydrochloride 99.5% ar, ar grade , cas no 536-46-9 64 n-heptane, ar grade , cas no142-82-5 65 n-hexane, 99%, ar grade , cas no110-54-3 66 nitric acid ( 69-72% ) er , ar grade , cas no7697-37-2 67 ortho phosphoric acid 88-93% er , ar grade , cas no7664-38-2 68 o-toluidine 99.5% , ar grade , cas no95-53-4 69 oxalic acid er , ar grade , cas no6153-56-6 70 pararosaniline chloride 88% , ar grade , cas no569-61-9 71 patton and reeders reagent ar ( calcon carboxylic acid, grade , cas no3737-95-9 72 petroleum spirit ( petroleum ether ) 40°-60°c , ar / sq grade , cas no8032-32-4 73 phenol detached crystals 99.5% , ar grade , cas no108-95-2 74 phenol red indicator powder ( water soluble ) , ar grade , cas no143-74-8 75 phenolphthalein indicator powder, ar grade , cas no77-09-8 76 phosphorus pentoxide 98% ar / acs , ar / sq grade , cas no1314-56-3 77 potassium carbonate anhydrous 99.5% ar / acs , ar grade , cas no584-08-7 78 potassium chloride er , ar grade , cas no7447-40-7 79 potassium chromate , ar grade , cas no7789-00-6 80 potassium dichromate , ar grade , cas no7778-50-9 81 potassium dihydrogen ortho phosphate er , ar grade , cas no7778-77-0 82 potassium hydroxide pellets er , ar grade , cas no1310-58-3 83 potassium iodide, ar grade , cas no7681-11-0 84 potassium metabisulphite 96% ar , ar / sq grade , cas no16731-55-8 85 potassium nitrate er , ar grade , cas no7757-79-1 86 potassium perchlorate 99.5% ar / acs , ar grade , cas no7778-74-7 87 potassium permanganate 99% ar / acs , ar grade , cas no7722-64-7 88 potassium persulphate ( potassium peroxydisulphate ) er, ar grade , cas no7727-21-1 89 potassium sodium ( + ) -tartarate tetrahydrate ( rochelle salt ) er, ar grade , cas no6381-59-5 90 potassium sulphate er , ar grade , cas no7778-80-5 91 silica gel blue self indicating ( coarse ) , 5-8 mesh , ar grade , cas no112926-00-8 92 silicone grease ( himedia, assochem & sdfcl ) , ar grade 93 silver nitrate , ar grade , cas no7761-88-8 94 sodium acetate anhydrous er, ar grade , cas no127-09-3 95 sodium acetate trihydrate er, ar grade , cas no6131-90-4 96 sodium arsenite, ar grade , cas no7784-46-5 97 sodium azide , ar / sq grade , cas no26628-22-8 98 sodium bisulphite ar / acs , ar grade , cas no7631-90-5 99 sodium carbonate anhydrous er , ar grade , cas no497-19-8 100 sodium chloride er , ar grade , cas no7647-14-5 101 sodium diethyl dithiocarbamate trihydrate 99% ar / acs , ar grade , cas no20624-25-3 102 sodium dihydrogen ortho phosphate dihydrate er , ar grade , cas no13472-35-0 103 sodium hydrogen carbonate ( sodium bicarbonate ) er, ar grade , cas no144-55-8 104 sodium hydroxide pellets er , ar grade , cas no1310-73-2 105 sodium hypochlorite solution , contain about 4-6% available chlorine , ar grade , cas no7681-52-9 106 sodium iodide gpr, ar grade , cas no7681-82-5 107 sodium metabisulphite er, ar grade , cas no7681-57-4 108 sodium metasilicate nonahydrate ( sodium silicate hydrated powder ( meta ) ) , ar grade , cas no13517-24-3 109 sodium nitrate 99% ar / acs , ar grade , cas no7631-99-4 110 sodium nitroprusside dihydrate , ar grade , cas no13755-38-9 111 sodium sulfide nonahydrate, ar grade , cas no1313-84-4 112 sodium sulphite anhydrous er , ar grade , cas no7757-83-7 113 sodium thiosulphate anhydrous 98% ar , ar grade , cas no7772-98-7 114 sulphamic acid 99.5%, ar grade , cas no5329-14-6 115 sulphanilamide ( sulfanilamide ) , 99%, ar grade , cas no63-74-1 116 sulphuric acid 98 %, ar grade , cas no7664-93-9 117 thiosemicarbazide, 98%, ar grade , cas no79-19-6 118 thymol blue indicator powder, ar grade , cas no76-61-9 119 tin ( ii ) chloride, anhydrous, 98%, ar grade , cas no7772-99-8 120 toluene er , ar grade , cas no108-88-3 121 triethanolamine 99% ar , ar grade , cas no102-71-6 122 tri-sodium phosphate anhydrous 99%, ar grade , cas no7601-54-9 123 universal indicator solution ( ph 4-11 ) , ar grade 124 xylene sulphur free, er , ar grade , cas no1330-20-7 125 zinc dust er , ar grade , cas no7440-66-6 126 zinc oxide 99% ar , ar grade , cas no1314-13-2 127 zinc sulphate heptahydrate er , ar grade , cas no7446-20-0 128 1, 10- phenanthroline , ar or higher grade, cas no.5144-89-8 129 1-amino-2-naphthol- 4-sulphonic acid 98%, ar or higher grade, cas no.116-63-2 130 5 2 6 kfr ( karl fischer reagent pyridine free single solution ) , pack of 2 x 250 ml cas no: 52365-46-5 131 biuret, 97%, ar or higher grade, cas no.108-19-0 132 boric acid er , ar or higher grade, cas no.10043-35-3 133 bromo cresol green indicator solution, ar or higher grade, cas no.76-60-8 134 bromo phenol blue indicator solution , ar or higher grade 135 buffer tablets ph 4.0 136 buffer tablets ph 7.0 137 buffer tablets ph 9.2 138 chlorotex reagent ( for determination of free chlorine from 0.1 to 1.0 ppm ) , ar or higher grade 139 citric acid anhydrous ar 99.5%, ar or higher grade, cas no.77-92-9 140 diacetyl monoxime 99%, ar or higher grade, cas no. 57-71-6 141 di-sodium tetraborate decahydrate ( borax ) 99.5% ar / acs, ar or higher grade, cas no.1303-96-4 142 ferroin indicator solution , ar or higher grade, cas no.14634-91-4 143 hydrogen peroxide solution 30% w / v ( 100 volumes ) er , ar or higher grade, cas no.7722-84-1 144 indicator papers-full range ( ph 1.0 to 14.0 ) 145 iodine ( resublimed ) 99.8%, ar or higher grade, cas no.7553-56-2 146 labolene neutral ph , ar or higher grade 147 magnesium chloride hexahydrate er, ar or higher grade, cas no.7791-18-16 / 7791-18-6 148 magnesium sulphate heptahydrate 99.5% ar , ar or higher grade, cas no. 10034-99-8 149 mercuric iodide red , ar or higher grade, cas no.7774-29-0 150 methanol for hplc, ar or higher grade, cas no.67-56-1 151 methyl orange indicator solution, ar or higher grade, cas no.547-58-0 / 152 methyl red indicator solution 0.01%, ar or higher grade 153 n, n-dinaphthyl ethylene diamine hydrochloride ( neda ) , ar or higher grade, cas no.1465-25-4 154 nesslers solution, pure, for detection and determination of nh3 and salts , ar or higher grade, cas no.7783-33-7 155 n-hexane 99% hplc , ar or higher grade, cas no.110-54-3 156 p-dimethyl amino benzaldehyde ( ehrlich’sreagent ) , ar or higher grade, cas no.100-10-7 157 phenolphthalein indicator solution, ar or higher grade, cas no.77-09-8 158 potassium bromate 99.8% ar / acs, ar or higher grade, cas no. 7758-01-2 159 potassium hydrogen phthalate er, ar or higher grade, cas no.877-24-7 160 potassium iodate , ar or higher grade, cas no.7758-05-6 161 salicylic acid 99.5%, ar or higher grade, cas no.69-72-7 162 silver sulphate, ar or higher grade, cas no.10294-26-5 163 sodium dihydrogen orthophosphate, anhydroushplc grade , ar or higher grade, cas no. 7558-80-7 164 sodium fluoride er, ar or higher grade, cas no.7681-49-4 165 sodium nitrite er, ar or higher grade, cas no.7632-00-0 166 sodium sulphate anhydrous er , ar or higher grade, cas no.7757-82-6 167 sodium thiosulphate pentahydrate er, ar or higher grade, cas no.10102-17-7 168 starch soluble er , ar or higher grade, cas no.9005-28-8 / 9005-84-9 169 water for hplc, ar or higher grade, cas no.7732-18-5 170 zinc acetate dihydrate 99.5%, ar or higher grade, cas no.5970-45-6 171 n, n-diethyl-p-phenylenediamine sulfate ( dpd ) , ar or higher grade , cas no. 6283-63-2 172 thorin indicator ( 1 ( o-arsonophenylazo ) -2-naphthol-3, 6-disulfonic acid, disodium salt ) , ar or higher grade , cas no. 3688-92-4 173 cresol red, ar or higher grade , cas no. 1733-12-6 174 chlorophenol red, ar or higher grade , cas no. 4430-20-0 175 potassium hydrogen phosphate ar or higher grade , cas no. 16788-57-1 176 zinc powder, <150 μm, 99.995% ar or higher grade, cas no.7440-66-6 177 potassium cyanide ar or higher grade, cas no.151-50-8 178 hydroxylamine hydrochloride ar or higher grade, cas no.5470-11-1 179 copper ( ii ) sulfateanhydrous, powder, =99.99%, cas no. 7758-98-7 180 leadacetate cas #: 6080-56-4