2,2,6,6-tetramethylpiperidinooxy (TEMPO, C9H18NO, Macklin, 98%), Sodium chloride (NaCl, Macklin, 99.5%), Hydrochloric acid (HCl, Macklin, AR), Nitric acid (HNO3, Macklin, AR), Sodium hydroxide (NaOH, Macklin, 99.5%), DMSO (Macklin, 99.7% Water ≤ 50 ppm), Ethanol (Macklin, 99....
THICKENED AQUEOUS HYDROCHLORIC ACID COMPOSITION FOR DESCALING, OR TREATMENT OF SUBTERRANEAN FORMATIONSThe invention provides a thickened aqueous hydrochloric acid composition comprising(a) 1 to 20% w hydrogen chloride, (b) an alcohol ethoxylate of general formula ##EQU1## wherein R is a C.sub.8-...
The chances of dyes adsorbed PA-12/PC nanocomposite retrieval were assessed by desorption experiments using three common desorbing agents (Fig.12). It was found that a strongly basic solution of sodium hydroxide (NaOH) worked best for CR desorption (88.07%), while hydrochloric acid (HCl) and ...
in H2O), acetonitrile (Optima, LC-MS grade), fuming hydrochloric acid (EMSURE, 37.0 %), 2,2,6,6-cyclohexanone-d4 (ISOTEC, 99 atom % D), 2,2,4-trimethyl pentane or isooctane (Merck, p.a. ≥ 99.5 % GC), formic acid LC-MS grade (Merck LiChropur, 98–100 % and Fisher Optima...
Fig. 1. Structural formula of (a) sodium ethyl xanthate (SEX), (b) sodium isopropyl xanthate (SIPX), (c) potassium amyl xanthate (PAX), (d) sodium di-isobutyl dithiophosphinate (SDIBDTPI), (e) benzohydroxamic acid (BHA), and (f) octanohydroxamic acid (OHA). 2.2. Chemical stability...
Then, trometamol, hydrochloric acid and 5% of the total amount of water are mixed and stirred until the trometamol has dissolved. The pH of this solution should be between 8.6 and 8.8. In parallel with this, the sodium chloride is dissolved in 90% of the amount of water. The solution is...
(0.077 equivalents OH) ethoxylated pentaerythritol (hydroxyl number=43 mg KOH/g), 0.2 gram Fascat-4100, 0.3 gram 37% hydrochloric acid, and 24.1 grams (0.076 mole) of isostearic acid having an acid value of 178.05 mg KOH/g were added were heated to 200 stopped when the acid value was ...
acrylic acid (70:30 % by weight) 25 g triphenylmethane dye of the formula 4.6 g triphenylmethane dye of the formula 4 g azomethine dye of the formula 3 g ethanol 260 ml n-propanol 200 ml ethylenechlorohydrin 40 ml acetone 500 ml 35 % by weight aqueous solution of hydrochloric acid 1.5...
e.g. hydrochloric or hydrobromic acid; sulfuric; nitric; phosphoric and the like acids; or organic acids such as, for example, acetic, propanoic, hydroxyacetic, lactic, pyruvic, oxalic, malonic, succinic, maleic, fumaric, malic, tartaric, citric, methanesulfonic, ethanesulfonic, benzenesulfonic, p...
ultrafiltration system having a G 50 membrane. 1600 ml of a triethanolammonium hydrochloride solution (pH=7.0) are added, the solution having been prepared from 367 g of triethanolamine, 700 g of demineralized water, 300 g of ice and also about 290 ml of 30% hydrochloric acid solution at ...