Comprehensive Determination of Chlorophyll Derivatives by Chromic Acid Oxidation

2012 ◽  
Vol 41 (6) ◽  
pp. 571-573 ◽  
Author(s):  
Yuhi Satoh ◽  
Shinya Nomoto ◽  
Takeo Hama
Keyword(s):  
Chromic Acid ◽  
Acid Oxidation ◽  
Chromic Acid Oxidation ◽  
Comprehensive Determination ◽  
Chlorophyll Derivatives

A Direct Determination of Rubber Hydrocarbon. Chromic Acid Oxidation Method

1943 ◽  
Vol 16 (3) ◽  
pp. 660-667 ◽  
Author(s):  
V. L. Burger ◽  
W. E. Donaldson ◽  
J. A. Baty
Keyword(s):  
Acetic Acid ◽  
Chromic Acid ◽  
Direct Determination ◽  
Acid Oxidation ◽  
Laboratory Procedure ◽  
Oxidation Method ◽  
Chromic Acid Oxidation

Abstract A method for the direct determination of rubber is reported. This method utilizes the property of rubber hydrocarbon when oxidized by chromic acid to form definite and reproducible amounts of acetic acid. This determination has been reduced to a comparatively simple laboratory procedure, whose accuracy (in the absence of interferences) is 1 to 2 per cent.

Determination of Methyl Groups in Alkylbenzenes by Chromic Acid Oxidation

1961 ◽  
Vol 33 (3) ◽  
pp. 453-455 ◽  
Author(s):  
S. G. Brandenberger ◽  
L. W. Mass ◽  
Isaac. Dvoretzky
Keyword(s):  
Chromic Acid ◽  
Acid Oxidation ◽  
Methyl Groups ◽  
Chromic Acid Oxidation

STUDIES OF CHLOROBIUM CHLOROPHYLLS: IV. PREPARATIVE LIQUID–LIQUID PARTITION CHROMATOGRAPHY OF PORPHYRINS AND CHLOROPHYLL DERIVATIVES AND ITS USE TO RESOLVE CHLOROBIUM PHEOPHORBIDE (650) INTO SIX COMPONENTS

1962 ◽  
Vol 40 (2) ◽  
pp. 171-176 ◽  
Author(s):  
D. W. Hughes ◽  
A. S. Holt
Keyword(s):  
Hydrochloric Acid ◽  
Absorption Spectra ◽  
Chromic Acid ◽  
Acid Oxidation ◽  
Partition Chromatography ◽  
Visible Absorption ◽  
Preparative Scale ◽  
Chromic Acid Oxidation ◽  
Chlorophyll Derivatives

Various porphyrins and chlorophyll derivatives have been purified on a preparative scale by distribution between hydrochloric acid and ether on Celite columns. By this technique crude Chlorobium pheophorbide (650) was resolved into six components, which possessed almost identical visible absorption spectra, but slightly different acid distribution numbers. Chromic acid oxidation and subsequent gas–liquid partition chromatography of the neutral fractions indicate the presence of more than one Chlorobium chlorophyll (650) in the original pigment preparation.

The kinetics of the chromic acid oxidation of diphenylmethane

Tetrahedron ◽  
1960 ◽  
Vol 8 (3-4) ◽  
pp. 313-335 ◽  
Author(s):  
K.B. Wiberg ◽  
R.J. Evans
Keyword(s):  
Chromic Acid ◽  
Acid Oxidation ◽  
Chromic Acid Oxidation ◽  
Kinetics Of
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