Tender For Purchase Of Chemicals , Purchase Of Chemicals , Stannous Chloride Dihydrate Appearance: White Crystalline Powder; Clear And Colourless (4% Soln. In 5N Hcl). Assay (Titrimetric): Min. 97%. Impurities: Sulphate (So₄) ≤ 0.02%. Physical Form: Cryst

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Tender For Purchase Of Chemicals , Purchase Of Chemicals , Stannous Chloride Dihydrate Appearance: White Crystalline Powder; Clear And Colourless (4% Soln. In 5N Hcl). Assay (Titrimetric): Min. 97%. Impurities: Sulphate (So₄) ≤ 0.02%. Physical Form: Crystalline Powder, Not Lumpy Or Discoloured. Grade: Pure (Not Technical Grade). Storage: 25-40°C. Shelf Life: 60 Months. Packing: Glass Bottle. Unit:100G , Chromium (Iii) Nitrate Nonahydrate Appearance: Blue To Violet To Black Shiny Crystals. Assay (Titrimetric): Min. 96%. Impurities: - Chloride (Cl) ≤ 0.01% - Sulphate (So₄) ≤ 0.05% - Iron (Fe) ≤ 0.05% - Copper (Cu) ≤ 0.005% - Ammonium (Nh₄) ≤ 0.01%. Density: 1.80 G/Ml (Lit.). Melting Point: 60°C (Lit.). Grade: Pure (Not Technical/Commercial Grade). Storage: 25-40°C. Unit:500G , Copper (Ii) Nitrate Trihydrate Appearance: Blue Hygroscopic Compound. Assay (Complexometric): Min. 98%. Impurities: - Chloride (Cl) ≤ 0.005% - Sulphate (So₄) ≤ 0.02% - Iron (Fe) ≤ 0.02%. Form: Crystalline, Not Deliquesced Or Agglomerated. Grade: Pure (Not Extrapure/Technical Grade). Storage: 25-40°C. Imdg: Un 1477, Class 5.1, Pg Ii. Unit:500G , Cobalt (Ii) Nitrate Hexahydrate Appearance: Red Crystalline Compound. Assay (Edta Titration): Min. 97%. Impurities: - Chloride (Cl) ≤ 0.005% - Sulphate (So₄) ≤ 0.03% - Iron (Fe) ≤ 0.01% - Nickel (Ni) ≤ 0.01%. Grade: Extrapure (Not Pure/Technical Grade). Storage: 25-40°C. Shelf Life: 60 Months. Unit:250G , Nickel (Ii) Nitrate Hexahydrate Appearance: Green Crystalline Powder / Deliquescent Crystals; Clear (10% Aq. Soln). Assay (Complexometric): Min. 98%. Impurities: - Chloride (Cl) ≤ 0.005% - Sulphate (So₄) ≤ 0.05% - Iron (Fe) ≤ 0.02% - Cobalt (Co) ≤ 0.1%. Grade: Pure (Not Technical Grade). Imdg: Un 2725, Class 5.1, Pg Iii. Storage: 25-40°C. Unit:500G , Magnesium Nitrate Hexahydrate Appearance: Colourless Or White Solid; Clear And Colourless (10% Aq. Soln). Assay (Edta Titration): Min. 98%. Ph (5% Aq. Soln): 5.0-8.2. Impurities: - Insoluble Matter ≤ 0.005% - Chloride (Cl) ≤ 0.001% - Sulphate (So₄) ≤ 0.005% - Iron (Fe) ≤ 0.0005% - Heavy Metals (Pb) ≤ 0.0005% - Ammonium (Nh₄) ≤ 0.003% - Calcium (Ca) ≤ 0.01% - Manganese (Mn) ≤ 0.0005% - Sodium (Na) ≤ 0.005% - Potassium (K) ≤ 0.005% - Barium (Ba) ≤ 0.005%. Grade: Acs (Complying With American Chemical Society Specifications). Storage: 25-40°C. Unit:500G , Carbon Black, Acetylene Appearance: Fine Black Powder, 50% Compressed Form - Not Fluffy Uncompressed Powder. Purity (Carbon Content): Min. 99.9%+. Impurities / Physical Parameters: - Ash Content ≤ 0.3% - Moisture (Heating Loss) ≤ 0.40% - Electrical Resistivity ≤ 0.30 Ohm-Cm - Bet Surface Area ~90 M²/G - Oil Absorption Number (Oan): 220-260 Ml/100G - Mean Particle Size ~40 Nm - Ph 6-8 - Iodine Absorption No. ~100. Grade: Acetylene Black (Not Furnace Black Or Lamp Black). Application: Conductive Agent For Electrochemical Use. Unit:100G , Cerium (Iii) Nitrate Hexahydrate Appearance: White To Pale Yellow Hygroscopic Crystalline Compound; Clear In Solution. Assay: Min. 99.9%. Impurities: - Chloride (Cl) ≤ 0.003% - Sulphate (So₄) ≤ 0.002% - Iron (Fe) ≤ 0.001%. Grade: Extrapure Ar, 99.9% (Not Standard/Pure Grade At Lower Purity). Imdg: Un 1477, Class 5.1, Pg Ii. Storage: 25-40°C. Unit:100G , L-Ascorbic Acid Appearance: White Crystalline Powder; Clear And Colourless Solution. Assay (Titrimetric): Min. 99.7%. Melting Point (Decomp.): 190-192°C. Ph (5% Aq. Soln): 2.2-2.5. Specific Rotation [Α]: +20.5° To +21.5° (C=10, Water). Impurities: - Sulphate (So₄) ≤ 0.1% - Oxalic Acid ≤ 0.1% - Iron (Fe) ≤ 0.002% - Copper (Cu) ≤ 0.0005% - Heavy Metals (Pb) ≤ 0.0002%. Grade: Extrapure Annual Repair (Not Pure/Technical). Storage: 25-40°C. Packing: Plastic Bottle. Unit:50G , Citric Acid Monohydrate Appearance: White Crystalline Compound; Clear And Colourless (10% Aq. Soln). Assay (Titrimetric): Min. 99.5%. Impurities: - Sulphated Ash ≤ 0.1% - Sulphate (So₄) ≤ 0.015% - Heavy Metals (Pb) ≤ 0.0005% - Iron (Fe) ≤ 0.0005% - Oxalate ≤ 0.03%. Grade: Extrapure (Not Anhydrous Citric Acid; Must Be Monohydrate Form, C₆H₈O₇·H₂O, Mw 210.14). Storage: 25-40°C. Unit:500G , Urea Appearance: White Crystalline Powder; Clear And Colourless (10% Aq. Soln). Assay (Calculated From N Content): Min. 99%. Melting Point: 131-135°C. Impurities: - Sulphated Ash ≤ 0.1% - Chloride (Cl) ≤ 0.002% - Sulphate (So₄) ≤ 0.01%. Grade: Extrapure (Not Fertiliser/Commercial Grade). Note: Must Be Anhydrous Form (Mw 60.06), Not Biuret-Contaminated Grades. Storage: 25-40°C. Unit:500G , Uric Acid Appearance: White Crystalline Powder. Assay (Titrimetric): Min. 99%. Impurities: - Sulphated Ash ≤ 0.1% - Water (Karl Fischer) ≤ 0.5%. Grade: Extrapure Annual Repair (Not Standard/Pure Grade). Form: Anhydrous. Storage: 25-40°C. Unit:10G , D-Glucose Anhydrous Appearance: White Crystalline Powder; Clear Solution. Assay (Hplc, Anhydrous Basis): 97.5-102.0%. Specific Rotation [Α]: +52.5° To +53.3° (C=10, Water). Impurities: - Water (Kf) ≤ 1.0% - Conductivity ≤ 20 Μs/Cm At 25°C - Maltose + Isomaltose (Hplc) ≤ 0.4% - Maltotriose (Hplc) ≤ 0.2% - Fructose (Hplc) ≤ 0.15% - Unspecified Impurities ≤ 0.10% - Total Related Substances ≤ 0.5% - Sulphated Ash ≤ 0.10% - Chloride (Cl) ≤ 0.0125% - Sulphate (So₄) ≤ 0.020%. Grade: Anhydrous (Not Monohydrate). Storage: 25-40°C. Unit:500G , Di-Potassium Hydrogen Phosphate Anhydrous Appearance: White Crystalline Powder. Assay (By Neutralization): Min. 98%. Ph (5% Aq. Soln): 8.5-9.6. Loss On Drying: Max. 1%. Impurities: - Insoluble Matter ≤ 0.01% - Chloride (Cl) ≤ 0.003% - Sulphate (So₄) ≤ 0.005% - Iron (Fe) ≤ 0.001%. Grade: Acs, Anhydrous (Not Trihydrate Form; Anhydrous Mw 174.18 Required). Storage: 25-40°C. Unit:500G , 4-Acetamidophenol Appearance: White Crystalline Powder Or Crystals. Assay: Min. 98%+. Melting Point: 168-172°C. Impurities: - Ph (5% Soln): 5.5-6.5 - Ir Spectrum: Conforms To Authentic Structure - Density: 1.293 G/Cm³ (21°C). Grade: For Synthesis, 98%+ (Not Pharmaceutical Grade). Storage: 25-40°C. Note: Synonyms: Paracetamol, P-Hydroxyacetanilide - Must Conform To Mw 151.16. Unit:100G , Caffeine Anhydrous Appearance: White To Off-White Crystalline Powder. Assay (Titrimetric): Min. 98%. Melting Point: 234-239°C. Impurities: - Sulphated Ash ≤ 0.1% - Loss On Drying ≤ 0.5% - Heavy Metals (Pb) ≤ 0.001%. Grade: Pure, Anhydrous (Not Caffeine Hydrate Or Caffeine Citrate). Storage: 25-40°C. Shelf Life: 60 Months. Packing: Plastic Bottle. Unit:100G , Magnesium Chloride Hexahydrate Appearance: Colourless Or White Crystalline Solid; Clear Solution (10% Aq. Soln). Assay (Complexometric): Min. 99%. Impurities: - Water-Insoluble Matter ≤ 0.005% - Sulphate (So₄) ≤ 0.005% - Iron (Fe) ≤ 0.0003% - Heavy Metals (Pb) ≤ 0.0005% - Calcium (Ca) ≤ 0.01% - Barium (Ba) ≤ 0.003% - Sodium (Na) ≤ 0.01% - Potassium (K) ≤ 0.01%. Grade: Acs (Not Anhydrous Mgcl₂; Hexahydrate Form, Mw 203.30 Required). Storage: 25-40°C. Shelf Life: 60 Months. Unit:500G , Calcium Chloride Dihydrate Appearance: White Crystalline Powder; Clear And Colourless (10% Aq. Soln). Assay (Calculated From Cl): Min. 99.5%. Ph (5% Aq. Soln): 4.5-8.5. Impurities: - Sulphate (So₄) ≤ 0.005% - Iron (Fe) ≤ 0.0003% - Heavy Metals (Pb) ≤ 0.0005% - Nitrogen Compounds (N) ≤ 0.002% - Sodium (Na) ≤ 0.01% - Potassium (K) ≤ 0.01% - Barium (Ba) ≤ 0.003% - Magnesium (Mg) ≤ 0.005%. Grade: Extrapure Ar, Dihydrate (Not Anhydrous Cacl₂; Dihydrate Form Mw 147.02 Required). Storage: 25-40°C. Unit:500G , Ammonium Chloride Appearance: White Crystalline Powder. Assay (Argentometric Titration): Min. 99.5%. Melting Point (Sublimation): ~340°C. Impurities: - Insoluble Matter ≤ 0.005% - Residue After Ignition ≤ 0.02% - Sulphate (So₄) ≤ 0.005% - Iron (Fe) ≤ 0.0002% - Heavy Metals (Pb) ≤ 0.0005% - Phosphate (Po₄) ≤ 0.001%. Grade: Extrapure Annual Repair (Not Pure/Technical Grade). Storage: 25-40°C. Shelf Life: 60 Months. Unit:500G , Creatinine Anhydrous Appearance: White Crystalline Powder. Assay (Titrimetric, On Dry Basis): Min. 99%. Ph (5% Aq. Soln): 7.0-9.0. Melting Point: ~295°C (Decomp.). Impurities: - Loss On Drying ≤ 0.5% - Sulphated Ash ≤ 0.05% - Chloride (Cl) ≤ 0.2% - Heavy Metals (Pb) ≤ 0.001%. Grade: Extrapure Ar, Anhydrous (Not Creatinine Monohydrate; Mw 113.12 Required). Storage: 25-40°C. Shelf Life: 60 Months. Unit:25G , Picric Acid, Moistened With Water Appearance: Pale Yellow Crystals Moistened With Approximately 30% Water (For Safe Handling And Transport). Assay (On Dry Basis): Min. 99%. Water Content: ~30% W/W (Moistened, Not Dry - Dry Picric Acid Is A Primary Explosive). Impurities: No Additional Inorganic Or Organic Impurities Beyond Water. Grade: Extrapure (Not Dry/Anhydrous Form - Must Be Water-Moistened, ≥30% Water). Storage: 25-40°C. Imdg: Un No. 1344, Imco Class 4.1, Packing Group I. Packing: Plastic Bottle. Unit:500G , Sarcosine Appearance: White Crystalline Powder. Assay: Min. 99%. Synonyms: N-Methylglycine, Sarcosinic Acid. Impurities: - Sulphated Ash ≤ 0.1% - Heavy Metals ≤ 0.001% - Moisture ≤ 0.5%. Grade: 99% (Not 97% Or Technical Grade). Physical Form: Free-Flowing Crystalline Powder (Not Lumpy Or Discoloured). Storage: 25-40°C. Shelf Life: 60 Months. Note: Non-Hazardous Substance (Nonh For All Transport Modes). Unit:100G , L-Tyrosine Appearance: White To Off-White Crystalline Powder; Clear (5% Soln. In 2N Hcl). Assay (Titrimetric, On Dry Basis): Min. 99%. Specific Rotation [Α]: -12° To -10° (C=4, N Hcl). Impurities: - Loss On Drying ≤ 0.5% - Sulphated Ash ≤ 0.1% - Chloride (Cl) ≤ 0.01% - Sulphate (So₄) ≤ 0.03%. Grade: Extrapure Chr (Chromatographically Pure; L-Isomer Only, Not D,L-Racemic Mixture). Storage: Room Temperature. Shelf Life: 60 Months. Packing: Plastic Bottle. Unit:25G , Sodium Borohydride Appearance: White Crystalline Hygroscopic Compound. Assay (Iodometric): Min. 98%. Physical Form: Crystals (Not Powder - Crystal Form Specified For Controlled Dissolution Rate). Impurities: - Loss On Drying ≤ 0.5% - Mesh Size (5 Mesh): Min. 80% Retained. Grade: Extrapure/Acs, Crystal Form (Not Powder Or Granule Form). Special Handling: Water-Reactive; Must Be Stored In Tightly Closed Containers Under Dry, Inert Atmosphere. Imdg: Un No. 1426, Imco Class 4.3, Packing Group I. Storage: 25-40°C. Unit:25G , Potassium Ferricyanide Appearance: Ruby Red Crystalline Powder; Clear Solution. Assay (Iodometric): Min. 98%. Ph (10% Aq. Soln): 6.0-9.0. Density: 1.89 G/Cm³. Impurities: - Insoluble Matter ≤ 0.1% - Chloride (Cl) ≤ 0.05% - Sulphate (So₄) ≤ 0.05% - Iron (Fe) ≤ 0.002% - Ferrocyanide Content ≤ 0.005%. Grade: Extrapure (Not Technical/Photographic Grade). Storage: Room Temperature. Imdg: Un 3077, Imco Class 9, Pg Iii. Unit:500G , Potassium Ferrocyanide Trihydrate Appearance: Pale Yellow Crystalline Powder; Clear (10% Aq. Soln). Assay (Complexometric): Min. 99%. Impurities: - Insoluble Matter ≤ 0.05% - Chloride (Cl) ≤ 0.02% - Sulphate (So₄) ≤ 0.02% - Iron (Fe) ≤ 0.002% - Free Cyanide ≤ 0.001%. Grade: Extrapure Ar, Trihydrate Form (Mw 422.39; Not Anhydrous Potassium Ferrocyanide). Storage: Room Temperature. Shelf Life: 60 Months. Unit:500G , Manganese (Ii) Nitrate Tetrahydrate Appearance: Powder, Crystals Or Chunks. Assay (Kt - Karl Fischer Titration): Min. 97.0% (Purum P.A. Grade). Grade: Purum P.A. (Pro Analysis), Quality Level 200. Anion Traces: - Chloride (Cl⁻) ≤ 50 Mg/Kg - Sulphate (So₄²⁻) ≤ 50 Mg/Kg. Cation Traces: - Ca ≤ 50 Mg/Kg - Cd ≤ 50 Mg/Kg - Construction Of ≤ 50 Mg/Kg - Cu ≤ 50 Mg/Kg - Fe ≤ 50 Mg/Kg - K ≤ 100 Mg/Kg - Na ≤ 100 Mg/Kg - Ni ≤ 50 Mg/Kg - Pb ≤ 50 Mg/Kg - Zn ≤ 50 Mg/Kg. Note: Must Be Tetrahydrate Form (Mw 251.01), Not The Anhydrous Or 37% Liquid Solution. Unit:100G , Choline Chloride Appearance: White To Off-White Crystalline Powder; Very Hygroscopic. Assay: Min. 99%. Impurities: - Loss On Drying ≤ 1.0% - Sulphated Ash ≤ 0.1% - Heavy Metals (Pb) ≤ 0.001% - Ph (5% Soln): 5.0-7.0. Grade: 99% (Not Feed-Grade Or 70% Aqueous Solution). Form: Solid Crystalline Powder (Not Liquid Form). Storage: 25-40°C. Shelf Life: 60 Months. Unit:500G , L-Lactic Acid Pure Appearance: Clear, Colourless To Pale Yellow Liquid. Assay (Titrimetric): Min. 88% (Aqueous Solution; Not Anhydrous - 88% W/W Is The Standard Commercial Form). Impurities: - Chloride (Cl) ≤ 0.01% - Sulphate (So₄) ≤ 0.01% - Iron (Fe) ≤ 0.001% - Heavy Metals (Pb) ≤ 0.03%. Grade: Pure, L-(+) Isomer (Levorotatory; Not D,L-Racemic Lactic Acid). Physical State: Liquid. Storage: 25-40°C. Shelf Life: 60 Months. Unit:500Ml , Peg-4000 Flakes Appearance: White Waxy Solid Flakes; Clear And Colourless (10% Aq. Soln). Average Molecular Weight: 3500-4500 (Nominal Peg-4000; Not Peg-3000 Or Peg-6000). Melting Point: 58-60°C. Viscosity: ~12 Cst. Ph (5% Aq. Soln): 4.5-7.5. Impurities: - Water Content (Kf) ≤ 0.5% - Sulphated Ash ≤ 0.1% - Heavy Metals (Pb) ≤ 0.001%. Grade: Pure, Flake Form (Not Powder Or Liquid Peg; Mw Range 3500-4500 Strictly). Storage: 25-40°C. Shelf Life: 60 Months. Unit:500G , Peg-6000 Flakes Appearance: White Waxy Solid Flakes; Clear And Colourless (10% Aq. Soln). Average Molecular Weight: 5400-6600 (Nominal Peg-6000; Not Peg-4000 Or Peg-8000). Melting Point: 60-63°C. Ph (5% Aq. Soln): 4.5-7.5. Impurities: - Water Content (Kf) ≤ 0.5% - Sulphated Ash ≤ 0.1% - Heavy Metals (Pb) ≤ 0.001% - Ethylene Oxide Residue ≤ 1 Ppm - 1,4-Dioxane Residue ≤ 10 Ppm. Grade: Pure, Flake Form (Mw Range 5400-6600 Strictly - Distinct From Peg-4000). Storage: 25-40°C. Unit:500G , Ammonium Metatungstate Hydrate 99.99% Trace Metals Basis (4N Purity), Total Trace Metals ≤150 Ppm, White Powder, Keggin-Type Structure. Strictly 99.99% ,Not The Lower-Grade Wo₃ Or W% Basis Variants Unit:25G , 2-Methylimidazole White Crystalline Powder, Assay ≥99% By Gc, Melting Point 142-145°C, Cas 693-98-1 Strictly (Not The 1-Methyl Or 4-Methyl Isomers), Imdg Class 8 Unit:500Gm , Titanium (Iv) Bis(Ammonium Lactato)Dihydroxide Solution 50 Wt.% Aqueous Solution, Density 1.222 G/Ml, Refractive Index 1.438, Liquid Form In Original Sealed Container. Unit:100Ml