Sodium hydrogensulfate

Acetic anhydride, Sodium hydrogensulfate See Acetic anhydride Ethanol, etc. 

Calcium hypochlorite, Sodium hydrogensulfate See Calcium hypochlorite Sodium hydrogensulfate, etc. 

The preparation of the acid salt with sodium hydroxide requires twice the volume of acid as that used in the preparation of the normal salt. Therefore, if 25 cm3 of dilute sulfuric acid were required to form the normal salt from a given volume of alkali of a particular concentration then 50 cm3 of the same acid solution would be required to produce the acid salt, sodium hydrogensulfate, from the same volume of alkali. 

Preparation of sodium hydrogensulfate by titration. Use the results from the previous exercise but add double the titre of acid to the same volume of alkali. 

Comparison of the salts sodium sulfate and sodium hydrogensulfate. Compare their crystal shapes. Measure the pH of their aqueous solutions. Add magnesium powder to both salts in solution. Add excess dilute hydrochloric acid and barium chloride solution to both solutions. 

By introducing different amines into an organic solvent such as toluene the sodium cations of the sulfonates can be exchanged by addition of sulfuric acid. Sodium hydrogensulfate is formed as a by-product. As immobilized phosphorus ligand TPPTS is used in most cases. 

The water-insoluble ammonium ligands are prepared from available water-soluble sodium salts according to Eq. (1). By introducing different amines in solvents, the sodium cations of the sulfonates can be exchanged in the presence of sulfuric acid. Sodium hydrogensulfate as a by-product can be removed smoothly by phase separation. This re-immobilization technique may also be extremely useful in the separation of salts from raw sulfonation mixtures within the preparation of sulfonated phosphines [12]. According to Eq. (1) many variations are possible, for example in the amines, functionalized phosphorus ligands, acids, solvents, and preparation procedures. The variability of the monoamines is demonstrated in Table 1. 

Yamazaki et al. resolved the Boc-protected cis racemate [78]. Treatment of the racemic c/s-2-ACPC with di-te/7-butyl dicarbonate resulted in the A-Boc-protected derivative, which was mixed with (-)-ephedrine. The resulting salt was fractionally crystallized from the ethyl acetate/diethyl ether solvent system. Treatment with sodium hydrogensulfate and removal of the Boc group with trifluoracetic acid (TFA) gave the (+)-(15,2/ ) enantiomer. 

Vi) sulfuric acid (dihydrogen sulfate) (xlv) sodium hydrogensulfate... 

The HSO4 ion is more than strong enough to be used as an acid in its own right, and sodium hydrogensulfate crystals (Na", HS04 ) are used as a powerful disinfectant. They are also provided in chemistry sets as a safe substitute for sulfuric acid. 

The rate of dissociation into radicals is accelerated by addition of reducing agents such as sodium hydrogensulfate (NaHSOs), sodium disulfite (metabisulfite) (Na2S205), sodium thiosulfate (NazSzOs) or sodium formaldehyde sulfoxylate (NaHSOz CH2O 2H2O). Activators are also added in the form of iron salts such as iron(II) sulfate (FeS04 THzO) or ammonium iron(II) sulfate (Fe(NH4)2(S04)2). 

Sulfuric acid, H2SO4 Sulfates (normal salts) and hydrogensulfates (acid salts) Sodium sulfate, Na2S04, and sodium hydrogensulfate, NaHS04... 

---