Bids Are Invited For Hiring Companies In The Sector, To Purchase Chemical Products For Water Treatment In Wa ... in Brazil

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Hydrated Lime Or Calcium Hydroxide. Ca(Oh)2 For Water Treatment. Calcium Hydroxide Ca(Oh)2 Content Should Be High, Generally Greater Than 90% - 95% (Dry Basis). Magnesium Oxide (Mgo) Content: Should Be Low, Preferably ≪ 0.5%. Composition: The Product Must Essentially Be Calcium Hydroxide. Granulometry: Lime Must Be Finely Ground (Powder), With A High Percentage Passing Through Fine Sieves, To Facilitate Dissolution., Sodium Carbonate (Light Barrel) – Na2co3 Physical-Chemical Properties: Physical State – Solid Appearance And Odor – Irritant Minimum Purity In Na2co3 – 99.00% Maximum Nacl Content – 0.40% Maximum Na2so4 Content – 0.07% Maximum Fe2o3 Content – 0.003% Maximum Insoluble Content – 0.03% Maximum Moisture – 0.50% Apparent Density – 470 To 570 G/L Use: Water Treatment For Public Supply In 25 Kg Bags, Granulated Calcium Hypochlorite, With The Following Physical-Chemical Characteristics: -Presentation: White Granulated Solid; . Packaging: Resistant To Product Aggression; -Operational Parameters: Concentration: % By Mass (Active Chlorine) Minimum 65 Residue, Insoluble In Water: % By Mass, Maximum 5; . Granulometry: Sieve Number 10 (Opening 2Mm) % By Mass, Maximum Retained 0.5; . Sieve Number 100 (Opening 0, 149 Mm, Minimum Abnt 96, 5; . Toxic Elements: Maximum Limit Per Element In Mg/Kg, As 40, Cd4, Pb 40, Cr 40, Hg 0, 8, Ag 40, Se 8, 0; . Sum Of Maximum Toxic Elements 0, . Greenish. Density: Minimum 1, 200 G/Cm³. Ph: 9.0 – 12.0. Solubility: Complete In Water, Polyaluminum Chloride 18%, Pac 18. Polyaluminum Chloride 18% (Pac 18) Cationic Inorganic Coagulant, Liquid, Used In Water And Effluent Treatment. Appearance, Brown To Light Yellow Liquid. Alumina Content (Al2o3) Between 16% And 18%, Density Of 1.33 To 1.38 G/Cm3. Fe2o3 Content, Maximum Of 70Mg/Kg., Cationic Polymer Physical Appearance: Whitish Granulated Powder Or Liquid Emulsion Viscous. Ionic Charge: Cationic (Positive). Charge Density: 90 40 Solubility: Soluble In Water. Physicochemical Characteristics: - White Color; Density: 0.830 G/Ml; - Water Soluble Aluminum: (As Ai203) 16.00 To 20% (Solid); -Water Soluble Iron (As Fe 203) 0 To 0.01% Solid; Ai203) 0 To 0.4% Solid And Liquid; - Water Insoluble Residue 0 To 0.1% Solid; - Ventilated Solid: 100% Passan-Te#80 (0.180Mm).

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