Bids Are Invited For Hiring A Company For Future And Eventual Acquisition Of Chemicals For Use In The Treatment Of Water From The Distribution Network Of The Municipality Of Carmésia/Mg

Sodium Carbonate (Light Barrel) Physical-Chemical Characteristics: White, Dry, Odorless, Insipid, Specific Weight 400/500 G/L. Granulometry: Retained Mesh 18, 0 Max. 10, Moisture: Max. From 1, Fire To 300 Degrees: Max. 1, 0. Chemical Characteristics: N2co3 Min. 98, Nacl Max. 0, 5, Naso4 Max . 0, 07, Fe2o3 Max. 0, Insoluble Max. 40, Cd 4, Pb 40, Cr 40, Hg 0, 8, Ag 40 And If 8, Being Not Exceeding 150 Mg/Kg. 38, 0, Bivalent Iron Expressed As Fe2/Soluble Total Iron As Fecl3 Max. 2, Residue Insoluble In Max. 0, 2 P/P And Free Acidity Like Hci Max. 1, 0 P/P. Maximum Limits By Toxic Element In Mg/L: At 30, Cd 6, Pb 30, Cr 30, 6, Ag 30 And If 6, Being The Sum Exceeding 125Mg/L Analyzed According To Standard Methods 19 Edition. Chemical Physical Characteristics: White Granulated Solid, Packaging Resistant To The Aggressiveness Of The Product. Operational Parameters: Concentration: Mass (Active Chlorine) Minimum 65. Water Insoluble Residue: Mass, Maximum 5. Granulometry: Sieve Number 10 (Open 2 Mm) Mass Max. 0, Sieve Number 100 (Opening 0, 149 Mm) Abnt Minimum 96, 5. Toxic Elements: Maximum Limit Per Element In Mg/Kg, At 40, Ag 40, If 8, 0. Maximum Toxic 0, 02 P/P. Note: Analysis Methodologies And Other Product Specifications Are Contained In Nbr 11887. Un Number: 1748.