Specifications include, but are not limited to: 001. Deicing Salt (Sodium Chloride) shall be either Rock Salt #1-medium CC or Solar Salt obtained by evaporation of seawater. The delivered product shall comply with ASTM D 632, Type 1, Grade 1, and Missouri Department of Highway Standards MGS-92-05F. 1. Sodium Chloride (ROCK SALT) Sodium chloride shall be in the form of Rock Salt containing at the time of delivery no more than 2.0 percent moisture based on dry weight. 1.0 percent if heated at 110° C for two (2) hours. 2. CHEMICAL COMPOSITION Sodium Chloride (Deicing Salt), when dried to constant weight as specified above, shall conform to the following requirements: Sodium Chloride (NaC1), min. percent 95.0 Solubility in boiling distilled water, min., percent 99.0 3. GRADING Sodium Chloride (DEICING SALT), when dried as specified above, shall conform to the following requirements as determined by laboratory sieves. TOTAL PERCENT PASSING Sieve Min. Max ½inch .............................................................................. 100 min. ⅜inch ............................................................................... 95/100 No. 4................................................................................. 20/90 No. 8................................................................................. 10/60 No. 30............................................................................... 15 max. The sieve analysis shall be in accordancewith the applicable provisionsof current A.A.S.H.T.O. Designation T27. All Sodium Chloride shall be treated with an anti-caking agent and meetA.S.T.M., A.A.S.H.T.O., MoDOT Specifications, and grade CC. Evaporated salt from mines shall not be furnished in lieu of Rock Salt or Solar Salt. 002. ClearLane® enhanced deicer or approved equal enhanced deicing salt product containing a pre-wetting agent, coloring agent, and a corrosion inhibitor. Enhanced deicer shall protect exposed steel surfaces from damp salt corrosion and remain free flowing at low temperatures. Enhanced deicer shall adhere to the road surface more effectively than dry salt, minimizing loss of deicer from wind and traffic scatter. A. HANDLING AND STORAGE: The contractor shall furnish MSDS sheets and precautions when handling, proper disposal, and storage information. B. PACKAGING: Enhanced deicer shall be available in bulk form. C. METHODS OF ANALYSIS: Methods of analysis are taken from the ASTM designations D 632-99, and E 534-98. D. CHEMICAL ANALYSIS OF TREATED SALT Component Units Typical Sodium Chloride Deicing Salt % 95.9 Pre-wetting Agent % 4.1 E. CHEMICAL ANALYSIS OF PRE-WETTING AGENT Component Units Typical Magnesium chloride % 29 Triethanolamine % 0.6 Coloring Agent % 0.25 Proprietary Performance Enhancing Additive % 0.4 pH 8.6 SIEVE ANALYSIS: U.S.S. Mesh Opening Inches Opening Microns Specification ½” 0.500 12700 100 3/8” 0.375 9525 95 - 100 4 0.187 4760 20 - 90 8 0.0937 2380 10 - 60 30 0.0232 590 0 - 15 Note: Sieve analysis is reported as percent passing. The dry salt utilized in this product complies fully with ASTM specification D632-99, Type 1, Grade 1. Sieve analysis of the final product differs from the ASTM dry salt specification due to the effect of the liquid pre-wetting agent on the sieve. 003. Liquid calcium chloride solution, available in 28% to 32% concentration. Liquid calcium chloride shall meet ASTM D 98 and AASHTO M144 requirements for calciumchloride purity. ASTM classification for LIQUIDOW calcium chloride is “Type L.” A. APPLICATIONS Liquid calcium chloride is primarily used for dust control of unpaved roads and parking lots, and pre-wetting rock salt deicers. B. AVAILABILITY Liquid calcium chloride shall be available in bulk tank trucks or 275 Gallon IBC tote C. TYPICAL PROPERTIES OF COMMON CONCENTRATIONS Calcium Chloride 28% 32% Potassium Chloride, (%) 0.75 0.86 Sodium Chloride, (%) 0.51 0.58 Other Impurities, (%) 0.11 0.12 D. SAFETY AND HANDLING The contractor shall furnish MSDS sheets and precautions when handling, proper disposal, and storage information.
