The Solubility of Cobalt Hydroxide, Co(OH)2, in Solutions of Hydrochloric Acid and Sodium Hydroxide at 25°

1950 ◽  
Vol 72 (9) ◽  
pp. 3921-3923 ◽  
Author(s):  
Karl H. Gayer ◽  
A. B. Garrett
Keyword(s):  
Hydrochloric Acid ◽  
Sodium Hydroxide ◽  
Cobalt Hydroxide

scholarly journals Kinetics of Substituted Bis- and Mono-azo Dyes as Corrosion Inhibitors for Aluminium in Hydrochloric Acid and Sodium Hydroxide Solutions

1999 ◽  
Vol 23 (7) ◽  
pp. 408-409
Author(s):  
Loutfy H. Madkour ◽  
R. M. Issa ◽  
I. M. El-Ghrabawy
Keyword(s):  
Hydrochloric Acid ◽  
Sodium Hydroxide ◽  
Azo Dyes ◽  
Thermodynamic Model ◽  
Corrosion Inhibitors ◽  
Kinetics Of ◽  
Alkaline Corrosion

This investigation is designed to apply an advanced kinetic–thermodynamic model on the data obtained from acidic and alkaline corrosion of aluminium using bis- and mono-azo dyes as corrosion inhibitors.

scholarly journals Pretreatment of Wood and Char Samples

Radiocarbon ◽  
1963 ◽  
Vol 5 ◽  
pp. 342-342 ◽  
Author(s):  
Hyman Schultz ◽  
L. A. Currie ◽  
F. R. Matson ◽  
W. W. Miller
Keyword(s):  
Hydrochloric Acid ◽  
Sodium Hydroxide ◽  
Humic Acids ◽  
Large Volume ◽  
Simple Procedure ◽  
Chemical Substance ◽  
Original Material ◽  
Chemical Examination ◽  
Free Sample

It has been shown that contamination from humic acids, chitin, fungal products, etc., contributing young carbon, and from bitumen and carbonate, contributing old carbon, may not be completely removed from wood and char samples by the usual hydrochloric acid and sodium hydroxide pretreatments of the samples. A procedure is offered for the isolation of a pure chemical substance from such samples, cellulose from wood and uncombined carbon from char, that must represent the original material. Cellulose is prepared by boiling the resin-free sample in 1.25% H2SO4 and 1.25% NaOH, adding Schweitzer's reagent, filtering, and precipitating from the filtrate by acidification. Uncombined carbon is separated from char samples as the flocculant precipitate remaining after boiling in 70% HNO3, followed by settling overnight from a large volume of 6M HNO3. A simple procedure for the chemical examination of char samples is also offered for the estimation of the amounts of bitumen, carbonate, combined, and uncombined carbon in char.

scholarly journals Determination of Uric Acid

1967 ◽  
Vol 13 (1) ◽  
pp. 12-18 ◽  
Author(s):  
H Harold Nishi
Keyword(s):  
Uric Acid ◽  
Hydrochloric Acid ◽  
Sodium Hydroxide ◽  
Serum Sample ◽  
Colorimetric Procedure ◽  
Sodium Hydroxide Treatment

Abstract The Archibald colorimetric procedure for determination of uric acid has been adapted for automation. The major differences from the original manual procedure after sodium hydroxide treatment of the serum sample are neutralization with hydrochloric acid and dialysis of the serum instead of precipitation to remove protein. At the rate of 40 samples per hour, the automated procedure shows good correlation with the manual procedure.

Tribo-corrosion behaviors of Ti3SiC2/Si3N4 tribo-pair in hydrochloric acid and sodium hydroxide solutions

Wear ◽  
2012 ◽  
Vol 274-275 ◽  
pp. 8-14 ◽  
Author(s):  
Shufang Ren ◽  
Junhu Meng ◽  
Jingbo Wang ◽  
Jinjun Lu ◽  
Shengrong Yang
Keyword(s):  
Hydrochloric Acid ◽  
Sodium Hydroxide ◽  
Corrosion Behaviors

Stability of the Nerve Gas Antidote BIS (4-Hydroxyiminomethyl-1-Pyridinomethyl) Ether Dichloride (Toxogonin®)

1968 ◽  
Vol 2 (9) ◽  
pp. 234-243 ◽  
Author(s):  
Inga Christenson
Keyword(s):  
Aqueous Solution ◽  
Hydrochloric Acid ◽  
Sodium Hydroxide ◽  
Rate Constants ◽  
Kinetics Of Hydrolysis ◽  
Dilute Aqueous Solution ◽  
Nerve Gas ◽  
Ph Range ◽  
Kinetics Of ◽  
Hydrolysis Of

The products and kinetics of hydrolysis of the nerve gas antidote bis(4-hydroxyiminomethyl - 1 - pyridinemethyl) ether dichloride (Toxogonin ®) have been investigated. A survey of these studies is given: The hydrolytic reactions were studied in the pH range 1 M hydrochloric acid to 1 M sodium hydroxide at 25, 45, 75 and 85° C. Rate constants were determined in dilute aqueous solution, generally with an initial Toxogonin concentration of 0.01 mg per ml. In addition, a report is given concerning two-year storage of 25 percent (w/v) Toxogonin solutions at pH 2.5, 3.0 and 3.5. The solutions were stored in glass or polypropylene ampuls at 5, 15, 25 and 45°C. At 5 and 15C° decomposition was negligible, at 25 and 45 °C average decomposition was 1.5 percent and 3.3 percent, respectively.

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