Sodium hydrogen sulfate (NaHSO4)-Granules introduce:
Sodium bisulfate, also known as sodium hydrogen sulfate, is the sodium salt of the bisulfate anion, with the molecular formula NaHSO4. Sodium bisulfate is an acid salt formed by partial neutralization of sulfuric acid by an equivalent of sodium base, typically in the form of either sodium hydroxide (lye) or sodium chloride (table salt). It is a dry granular product that can be safely shipped and stored. The anhydrous form is hygroscopic. Solutions of sodium bisulfate are acidic, with a 1M solution having a pH of around 1.
Molar mass:120.06 g/mol (anhydrous);138.07 g/mol (monohydrate)
Appearance: white solid
Density: 2.742 g/cm3 (anhydrous);1.8 g/cm3 (monohydrate)
Melting point: 58.5 °C (137.3 °F; 331.6 K) (monohydrate);315 °C (anhydrous)
Boiling point: decomposes to Na2S2O7 (+ H2O) at 315 °C (599 °F; 588 K)
Solubility in water:28.5 g/100 mL (25 °C);100 g/100 mL (100 °C)
Solubility: Insoluble in ammonia
Acidity (pKa): 1.99
Crystal structure:triclinic (anhydrous);monoclinic (monohydrate)
Sodium bisulfate is used primarily to lower pH. it also is used in metal finishing, cleaning products, and to lower the pH of water for effective chlorination in swimming pools and hot tubs. Sodium bisulfate is also AAFCO approved as a general-use feed additive, including companion animal food. It is used as a urine acidifier to reduce urinary stones in cats.
It is highly toxic to certain echinoderms, but fairly harmless to most other life forms; so it is used in controlling outbreaks of crown-of-thorns starfish.
Sodium bisulfate was the primary active ingredient in the toilet bowl cleaners Vanish and Sani-Flush, both now discontinued.
In the textiles industry, it is sometimes applied to velvet cloth made with a silk backing and a pile of cellulose-based fiber (rayon, cotton, hemp, etc.) to create "burnout velvet": the sodium bisulfate, when applied to such a fabric and heated, causes the cellulose-based fibers to become brittle and flake away, leaving burned-out areas in the finished material, usually in attractive patterns.
Sodium bisulfate is the active ingredient in some granular poultry litter treatments used to control ammonia. Sodium bisulfate has also been shown to significantly reduce the concentration of Campylobacter and Salmonella in chicken houses.
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