Ammonium hydrogen sulfate

Ammonium bisulfate (ammonium hydrogen sulfate) [7803-63-6] M 115.1°, m -147°, d 1.79, pK 1.96 (HS04 ). Crystd from water at room temperature (ImL/g) by adding EtOH and cooling. 

Impregnation with ammonium acetate or ammonium hydrogen sulfate serves the same purpose [11-13]. In conjunction with the TLC separation previously carried out it is even possible to obtain group-speciHc and sometimes substance-specific information. 

The sodium and potassium salts of glutaconaldehyde are soluble only in polar solvents such as water, dimethyl sulfoxide, N,N-dimethylformamide, pyridine, and methanol. However, the stable tetrabutylammonium salt is soluble in relatively nonpolar solvents such as chloroform and ethyl acetate. It may be prepared from the potassium salt in the following manner. In a 1-1. Erlenmeyer flask equipped with a magnetic stirring bar are placed a solution of 13.6g. (0.1 mole) of crude glutaconaldehyde potassium salt in 200 ml. of water and a solution of 33.9 g. (0.1 mole) of tetrabutyl-ammonium hydrogen sulfate in 200 ml. of ice-cold water, the pH of wliich was adjusted to 10 by adding aqueous 2M sodium hydroxide. 

The environmental benefit of this route is evident when compared to the traditional methyl methacrylate manufacturing process, which uses hazardous hydrogen cyanide and produces stoichiometric amounts of ammonium hydrogen sulfate waste. 

NH4HSO4 The polyatomic ammonium cation is combined with a hydrogen-containing anion ammonium hydrogen sulfate. 

Aloton Also called Buchner. A process proposed for extracting aluminum from clay. Calcined clay is leached with ammonium hydrogen sulfate solution under pressure, and ammonium alum is crystallized from the liquor. Invented by M. Buchner in Hanover-Kleefeld in 1921 piloted in Germany in the 1920s and in Oregon in 1944. It was never commercialized, but provided the basis for the Nuvalon process which was. 

Nuvalon A development of the Aloton process for extracting aluminum from clay. As in the Aloton process, clay is first heated with ammonium hydrogen sulfate. In the Nuvalon version, the product from this reaction is digested under pressure with 30 percent nitric acid, producing a solution of basic aluminum nitrate. Iron is removed by hydrolysis or by cooling. 

Thermal decomposition produces ammonia and phosphoric acid reaction with sulfuric acid produces ammonium hydrogen sulfate ... 

Also, the compound can be prepared by adding potassium hydrogen sulfate, KHSO to an electrolyzed solution of ammonium hydrogen sulfate, NH4HSO4... 

Amine extraction of penicillins has been examined in a pilot scale extractor and its performance has been analyzed through suitable mathematical models 117-19]. Extraction efficiency as high as 90% was achieved under suitable conditions. The procedure for selection of volume ratios of the aqueous to organic phase and concentration ratio of carrier (Amberlite LA-2) to penicillin-G at a desired degree of extraction and enrichment has recently been described [20]. Ion-pair extraction of penicillin-V and phenoxy acetic acid with Amberlite LA-2 hydrochloride and tetrabutyl ammonium hydrogen sulfate can be effective in... 

Facilitated transport of penicilHn-G in a SLM system using tetrabutyl ammonium hydrogen sulfate and various amines as carriers and dichloromethane, butyl acetate, etc., as the solvents has been reported [57,58]. Tertiary and secondary amines were found to be more efficient carriers in view of their easy accessibility for back extraction, the extraction being faciUtated by co-transport of a proton. The effects of flow rates, carrier concentrations, initial penicilHn-G concentration, and pH of feed and stripping phases on transport rate of penicillin-G was investigated. Under optimized pH conditions, i. e., extraction at pH 6.0-6.5 and re-extraction at pH 7.0, no decomposition of peniciUin-G occurred. The same SLM system has been applied for selective separation of penicilHn-G from a mixture containing phenyl acetic acid with a maximum separation factor of 1.8 under a liquid membrane diffusion controlled mechanism [59]. Tsikas et al. [60] studied the combined extraction of peniciUin-G and enzymatic hydrolysis of 6-aminopenicillanic acid (6-APA) in a hollow fiber carrier (Amberlite LA-2) mediated SLM system. 

Caution. Potassium tetrachloroplatinate(II) is a known sensitizing agent, and tetra(n-butyl)ammonium hydrogen sulfate is an irritant. All organic solvents used are toxic, and most of them flammable. Inhalation or contact with them should be avoided. Appropriate precautions must be taken, and an efficient hood must be used. 

Ten benzimidazoles Milk NaOH addn, EtOAc extn, liq-liq partn 5 Nucleosil 120 Ci8, 5 m O.OIM H3PO4/ ACN (80 20) contg 5 mM tetrabutyl-ammonium hydrogen sulfate, at 50 C UV 292 nm 2-40 ppb/ 59-100% 343... 

Nitric oxide is catalytically hydrogenated in an ammonium hydrogen sulfate solution ... 

An attempt was also made to accelerate the same reaction performed in a microemulsion based on water, nonionic surfactant and hydrocarbon oil [9]. The reaction was performed in a Winsor III system and the same Q salt, tetra-butyl ammonium hydrogen sulfate, was added to the formulation. In this case the addition of the phase transfer catalyst gave only a marginal increase in reaction rate. Similar results have been reported for an alkylation reaction performed in different types of micellar media [52]. The addition of a Q salt gave no effect for a system based on cationic surfactant, a marginal increase in rate for a system based on nonionic surfactant and a substantial effect when an anionic... 

Procedure (See Chromatography, Appendix IIA.) Use a high-performance liquid chromatograph capable of separating acesulfame potassium and 4-hydroxybenzoic acid ethyl ester with a resolution of 2. Use a chromatograph equipped with a UV or diode array (227 nm) detector and a 25-cm x 4.6-mm (id) stainless steel column, or equivalent, packed with 3 to 5 p,m of reversed phase C18 silica gel, or equivalent. The elution is isocratic. Use a 40 60 (v/v) solution of acetoni-trile 0.01 MlL tetrabutyl ammonium hydrogen sulfate (TBAHS) in water as the mobile phase, with a flow rate of about 1 mL/min. 

Aloton Also called Buchner. A process proposed for extracting aluminum from clay. Calcined clay is leached with ammonium hydrogen sulfate solution under pressure, and ammonium alum is... 

Write formulas for each of the following compounds (a) ammonium hydrogen sulfate, (b) sodium hydrogen sulfide, and (c) nickel(II) hydrogen carbonate. 

Experimental data show that all the nitrogen is recovered as NH3, uncontaminated by sulfur oxides, in the low temperature stage. The major sulfur species formed at high temperatures was sulfur dioxide. In another study, Wentworth [30] has reported an ammonia yield of 99.3% by the following reactions involving ammonium hydrogen sulfate and zinc oxide ... 

---