Aggressive liquids, attack

The resistance to attack by aggressive liquids which would commonly be chlorides from marine environments or de-icing salts and sulfates from ground water. 

Tile construction is not used to any great extent for very aggressive liquid corrosives because the tile and the mortar joints are relatively thin approximately V2 in. deep) and are somewhat porous. These structures, therefore, have a tendency to weep or leak. Other factors which contribute to this tendency are the lack of a membrane and the susceptibility of the Portland cement core to attack by acidic media. Also, because the tiles are essentially the forms for the concrete and are not removed after the concrete cures, controlling the quality of the concrete wall by visually identifying stone pockets, pour lines, etc., is impossible. Structural tile vessels are, therefore, used in stock tanks, pulp storage tanks, washers, etc., where some leakage can be tolerated or the solids in the contained media will plug leaks. 

On the opposite side, the small attacks repeated by a very concentrated irritant can accumulate microlesions that could be quite severe in the end. For instance, the more we concentrate a weak acid such as acetic acid, the more aggressive we make it. The icy acetic acid is a strong corrosive because it is moreover totally anhydride. When in contact with cellular biological liquids, it literally pumps all the water and provokes a necrosis of tissues. 

This results in higher efficiency compared to the usual sequestering agents such as EDTA, NTA, and DTPA. Another advantageous difference to this kind of sequestering agent is the diminished aggressiveness towards metals and metal ions. Ions of Cu and Cr in metallized Reactive and Direct dyestuffs are not attacked by BURCO NBS LIQUID, dye shade and fastness of reactive dyes or direct dyestuffs which contain complexed metal ions, and are therefore not impaired. 

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