Determination of Chlorate in Caustic Soda Solutions By Reduction with Ferrous Sulfate

1945 ◽  
Vol 17 (9) ◽  
pp. 533-535 ◽  
Author(s):  
Dwight Williams
Keyword(s):  
Caustic Soda ◽  
Ferrous Sulfate

Determination of Water in Caustic Soda and Other Alkaline Materials

1947 ◽  
Vol 19 (5) ◽  
pp. 326-329 ◽  
Author(s):  
H. R. Suter
Keyword(s):  
Caustic Soda

Simplified Determination of Manganese in Caustic Soda

1946 ◽  
Vol 18 (9) ◽  
pp. 556-557
Author(s):  
R.F. Moran ◽  
A.P. McCue
Keyword(s):  
Caustic Soda

scholarly journals Kinetic study of hydrolysis of ethyl acetate using caustic soda

2018 ◽  
Vol 7 (4) ◽  
pp. 1995 ◽  
Author(s):  
Mostafa Ghobashy ◽  
Mamdouh Gadallah ◽  
Tamer T.El-Idreesy ◽  
M. A.Sadek ◽  
Hany A.Elazab
Keyword(s):  
Caustic Soda ◽  
Ethyl Acetate ◽  
Flow Reactor ◽  
Design Method ◽  
Plug Flow ◽  
Tubular Reactor ◽  
Acid Base ◽  
Chemical Reaction Kinetics ◽  
Hydrolysis Of

We report here, the hydrolysis of ethyl acetate by using caustic soda which is followed by means of conductance measurements which is widely used in chemical industry. The main aim of this research is to study the parameters of production of ethyl acetate by chemical reaction kinetics using an anion ion-exchange acting as a catalyst and acid-base titrations. The reaction of ethyl acetate and sodium hydroxide (caustic-soda) is done in a plug-flow reactor (steady-state tubular reactor) under the effect of different parameters including temperature, concentration and flow-rate, which allows the determination of activation energy and rate constants, due to large number of experiments. Factorial design method is used for the calculations of the experiment. It was determined that the order of the reaction is a second-order reaction.  

Determination of Mercury and Bromides with 1,10-Phenanthroline Ferrous Sulfate

1951 ◽  
Vol 23 (8) ◽  
pp. 1181-1183 ◽  
Author(s):  
M Hall ◽  
Geo. Smith
Keyword(s):  
Ferrous Sulfate

Studies on the Carbon and Nitrogen Cycles in the soil. II. The Extraction of the Organic Matter of the Soil With Alkali

1930 ◽  
Vol 20 (3) ◽  
pp. 460-477 ◽  
Author(s):  
C. W. B. Arnold ◽  
H. J. Page
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Caustic Soda ◽  
Organic Manure ◽  
Humic Matter ◽  
Colour Intensity ◽  
Alkali Extraction ◽  
Carbon And Nitrogen ◽  
Manurial Treatment

The alkali extraction of the organic matter from the soils of certain plots of the classical permanent experiments on Barnfield and Broadbalk at Rothamsted, receiving respectively organic manure, artificial fertilisers and no manurial treatment, has been studied, together with a colorimetric examination of the extracts for the comparison of the content of humic matter.It is shown that, in spite of the different cultural and manurial treatments which the different plots have received, there is a marked similarity in the properties of the organic matter of these soils, with regard to its behaviour on extraction with cold and hot dilute caustic soda, and the colour intensity of the organic matter in the extracts.The methods used for the determination of organic carbon in the soils and their extracts are noted in an Appendix.The results discussed in this paper are further considered, along with those in the two next following Parts (III and IV), in Part V of this series, in their bearings on the origin of the humic matter of the soil.

A Simplified Ferrous Sulfate Method for the Determination of Vanadium in Steel.

1915 ◽  
Vol 7 (5) ◽  
pp. 419-420
Author(s):  
George T. Dougherty
Keyword(s):  
Ferrous Sulfate

scholarly journals Determination of Folic Acid in Multivitamin Preparations by Reversed Phase HPLC

2021 ◽  
Vol 11 (3) ◽  
pp. 185-192
Author(s):  
A. S. Alekseeva ◽  
M. V. Gavrilin ◽  
T. B. Shemeryankina ◽  
M. S. Smirnova ◽  
E. P. Fedorova ◽  
...  
Keyword(s):  
Folic Acid ◽  
Silica Gel ◽  
Ferrous Sulfate ◽  
Reversed Phase ◽  
Asymmetry Factor ◽  
Array Detector ◽  
Isocratic Elution ◽  
Rp Hplc ◽  
Acid Determination

A great variety of components in multivitamin preparations containing folic acid, and a variety of test methods and conditions of folic acid determination proposed by manufacturers, require alignment of test procedures for products with similar composition.The aim of the study was to compare the results of experimental verification of folic acid determination procedures which use reversed phase high-performance liquid chromatography (RP HPLC) with isocratic elution mode. Materials and methods: The Agilent 1260 Infinity II LC system with a diode array detector (280 nm), isocratic elution mode, C8- and C18-bonded silica gel chromatographic columns, model mixtures containing folic acid, cyanocobalamin, ferrous sulfate, and potassium iodide, were used in the study.Results: The lowest relative standard deviation of the folic acid peak area (RSD=0.09%), and the lowest asymmetry factor (As=1.04) for folic acid were observed for the model mixture “ferrous sulfate+folic acid+cyanocobalamin” and the following test conditions. Column: 250×4.0 mm, silica gel for chromatography, octylsilyl (C8), endcapped; mobile phase:  methanol‒phosphate buffer (12:88), pH 6.6; column temperature: 25ºС. The study demonstrated the feasibility of using these conditions for determination of pteroic acid impurity with simultaneous precipitation of interfering ferrous ions, using ethylenediaminetetraacetic acid solution, pH 9.5, as a solvent.Conclusions: RP HPLC can be recommended as an optimal aligned test procedure for determination of folic acid in combination products. It is recommended to use a solution containing folic and pteroic acids for system suitability testing.

The Volumetric Determination of Nitrates with Ferrous Sulfate as Reducing Agent

1933 ◽  
Vol 55 (4) ◽  
pp. 1454-1457 ◽  
Author(s):  
I. M. Kolthoff ◽  
E. B. Sandell ◽  
B. Moskovitz
Keyword(s):  
Ferrous Sulfate ◽  
Reducing Agent ◽  
Volumetric Determination

Determination of small quantities of manganese in caustic soda

The Analyst ◽  
1947 ◽  
Vol 72 (860) ◽  
pp. 472 ◽  
Author(s):  
C. G. Ethrington ◽  
J. W. Hughes
Keyword(s):  
Caustic Soda
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