SPECIFICATION OF CHEMICALS TO BE PROCURED

Transcription

1 SPECIFICATION OF CHEMICALS TO BE PROCURED Following instruction are to be followed by bidder STRICTLY without which the offer will be rejected. 1. Date of manufacturing or date of expiry should be mentioned on the packing. 2. The bidder has to submit CERTIFICATE OF ANALYSIS (COA) along with offer itself obtained from manufacturing company for all the impurities (as parameters mentioned below along with its specification) on the letter head of company/authorized lab and signed by authorized person. 1) Specification of POTASSIUM BROMATE, Packing: 500 gms. Colourless crystals or white crystalline powder K : BrO 3 : Test solution (5% w/v; water) The solution is clear and colourless Assay (KBrO 3 ) min 99.8 % ph (5% w/v; water) Insoluble matter max % Bromide (Br) Sulfate (SO 4 ) max % Sodium (Na) max 0.01 % Iron (Fe) max % Heavy metals (as Pb) max % The supplier should supply the chemical (POTASSIUM BROMATE) as per the generalised specification mentioned above or as per the Make & grade, SD fine (AR) Merck (EMPARTA) Fisher Scientific (SQ) 2). Specification of HYDROGEN PEROXIDE Packing :- 500ml. Clear liquid with characteristic odour Assay (H 2 O 2 ) 29.0 to 32.0% Colour (APHA) max 10 Hazen Titrable acid max meq/g Chloride (Cl) max % Phosphate (PO 4 ) max % Sulfate (SO 4 ) max % Heavy metals (as Pb) max % Iron (Fe) max % Non-volatile substances max 0.03 % Nitrate (NO 3 ) max % Ammonium (NH 4 ) max % 1

2 The supplier should supply the chemical (HYDROGEN PEROXIDE) as per the generalised specification mentioned above or as per the Make & grade, SD fine (AR) Merck (EMPARTA) Fisher Scientific (ExcelaR) 3). Specification of AMMONIUM HEPTAMOLYBDATE TETRAHYDRATE Packing :- 500/1000 gms. Irregular, white to pale greenish or pale yellowish crystals Test solution (5% w/v; water) The solution is almost clear and colourless with max opalescence of 1 ppm SO 4 Assay( as MoO 3 ) % Chloride (Cl) max 0.002% Nitrate (NO 3 ) Sulfate (SO 4 ) max 0.02% Lead (Pb) max 0.001% Magnesium (Mg) max 0.005% Potassium(K) max 0.01% Sodium(Na) max 0.01% Insoluble matter max 0.005% Heavy metals (as Pb) max 0.001% Phosphate, arsenate, silicate (as SiO 2 ) max 0.001% Phosphate (PO 4 ) max % The supplier should supply the chemical (AMMONIUM HEPTAMOLYBDATE TETRAHYDRATE) as per the generalised specification mentioned above or as per the Make & grade, SD fine (AR) Merck (EMPARTA) Fisher Scientific (ExcelaR) Note: packing may be in 500/1000gms. Prices should be quoted for 1000gms only. 4). Specification of POTASSIUM CHLIDE Packing :- 500 gms. White crystals or crystalline K : Cl : Test Solution (10 %w/v; water) The solution is clear and colourless Assay (KCl) % ph value ( 5 %w/v; water) Insoluble matter max % Bromide (Br) max 0.01 % Iodide (I) max % Phosphate (PO 4 ) max % Sulfate (SO 4 ) max % 2

3 Chlorate & nitrate (NO 3 ) max % Barium (Ba) Calcium (Ca) max % Heavy metals (as Pb) max % Iron (Fe) max % Magnesium (Mg) max % Sodium (Na) max 0.02 % The supplier should supply the chemical (POTASSIUM CHLIDE) as per the generalised specification mentioned above or as per the Make & grade, SD fine (AR) Merck (EMPARTA) Fisher Scientific (ExcelaR) 5). Specification of SODIUM NITRATE Packing: 500gms. Description Colourless deliquescent crystals / crystalline powder. 10% solution in water is clear and colourless. Minimum Assay (ex NO 3 ) 99.5% ph (5% aqueous solution) Insoluble matter Max 0.003% Chloride (Cl) Max % Iodate (IO 3 ) Max % Nitrite (NO 2 ) Max 0.001% Phosphate (PO 4 ) Max % Sulphate (SO 4 ) Max 0.003% Arsenic (As) Max % Calcium (Ca) Max 0.002% Copper (Cu) Max % Iron (Fe) Max % Lead (Pb) Max % The supplier should supply the chemical (SODIUM NITRATE) as per the generalised specification mentioned above or as per the Make & grade, SD fine (AR) Merck (EMPLURA) Fisher Scientific (SQ) 6). Specification of STARCH SOLUBLE Description Packing :- 500 gms. A white / almost white powder. 2% solution in boiling water is mobile and not more than slightly opalescent. 3

4 Mesh size (passing through 60mesh) Min.90.0% Loss on drying at 110 C Max. 10.0% Reducing substances(as glucose) Max. 0.2% Sulphated ash Max. 0.4% Acidity Max 0.8 ml N/1% Chloride (Cl) Max 0.005% Dextrin E.coli and salmonellae Total Bacterial Count < 200 cfu The supplier should supply the chemical (STARCH SOLUBLE) as per the generalised specification mentioned above or as per the Make & grade, SD fine (AR) Merck (EMPARTA) Fisher Scientific (ExcelaR) 7). Specification of MERCURIC SULPHATE. Packing :- 250 gms. Heavy, almost white crystalline powder of solution (10% w/v; H 2 SO 4 25%) The solution is almost clear and colourless Assay (HgSO 4 ) min 98.0 % Chloride (Cl) max % Nitrate (NO 3 ) Iron (Fe) max % Mercury I (as Hg) max 0.15 % Residue after reduction max 0.02 % The supplier should supply the chemical (Mercuric Sulphate) as per the generalised specification mentioned above or as per the Make & grade, SD fine (AR) Merck (EMPARTA) Fisher Scientific (ExcelaR) 8). Specification of D-SBITOL Packing : gms. Description Identification (By FTIR) Identification White crystalline powder. 10% solution in water is clear and colourless.. Specific optical rotation (α) 20 (calculated on anhy. subs.) D +4 to + 7 Assay (Iodimetric, Calculated on anhy. sub) % ph of 10% soln. in water

5 Conductivity Reducing sugar 0.2% NMT 20 us cm-1 Water Max. 1.0% Residue on ignition Max. 0.1% Acidity or Alkalinity Chloride (Cl) max 0.005% Nickel (Ni) max % Sulphate (SO 4 ) max 0.01% Arsenic (As) max % Heavy metals (as Pb) max % Lead (Pb) max % Total sugar max 1.0% Residual solvent Related substance : i] Individual impurity max 2.0% ii] Sum of all impurities max 3.0% Microbial contamination (total aerobics) 1000cfu/g Total Moulds and yeast Meets the requirements. 100 cfu/g The supplier should supply the chemical (D-SBITOL) as per the generalised specification mentioned above or as per the Make & grade, SD fine (EP) Sigma- Aldrich 9). Specification of DIGOL (Diethylene Glycol) Packing :- 500ml. Description A clear viscous liquid, colour not more than 10 Hazen units. Miscible with water forming clear and colourless solution. Minimum assay(by GC) 99.0% Wt.per ml at 20 C g Freezing point Min. - 9 C Refractive Index(n) D Water max 0.2% Sulphated ash max 0.01% Copper (Cu) max % Iron (Fe) max % Lead (Pb) max % The supplier should supply the chemical (DIGOL (Diethylene Glycol)) as per the generalised specification mentioned above or as per the Make & grade, SD fine (AR) Merck (EMPLURA) Fisher Scientific (SQ) R S SONGIRA SO/D 5

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