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Toluidine blue solution is used in testing for lignin, a complex organic molecule that bonds to cellulose fibres and strengthens and hardens the cell walls in plants. A positive toluidine blue test causes the solution to turn from blue to blue-green. [1] A similar test can be performed with phloroglucinol-HCl solution, which turns red.
Hyaline cartilage coloured with the toluidine blue, in wich you can observe a strong metachromasia of the ground substance. View through optical microscope, 40x magnification. Metachromasia (var. metachromasy ) is a characteristic change in the color of staining carried out in biological tissues , exhibited by certain dyes when they bind to ...
Toluidine isomers Methyl position ortho meta para Common name o-toluidine: m-toluidine p-toluidine Other names o-methylaniline m-methylaniline p-methylaniline Chemical name: 2-methylaniline 3-methylaniline 4-methylaniline Chemical formula: C 7 H 9 N Molecular mass: 107.17 g/mol Glass transition temperature: 189 K [3] 187 K [4] Glass not formed ...
2-Tolidine (orthotolidine, o-tolidine; not to be confused with o-toluidine) is an organic compound with the chemical formula (C 6 H 4 (CH 3)NH 2) 2.Several isomers are known; the 3-tolidine derivative is also important commercially.
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Supplies for the Best Homemade Bubble Solution. 2 tablespoons dish soap. 1 cup water. 1 tablespoon sugar. ... Quadruple the recipe and store it in a drink dispenser so kids can easily refill their ...
Dragendorff's reagent is prepared by mixing a concentrated solution of potassium iodide with a solution of bismuth subnitrate in a diluted acid (acetic acid or tartaric acid, hydrochloric acid or sulfuric acid is rarely being used) as a low pH is mandatory for this reagent. [2] The formation is as follows:
Before calling a cleaning service, DIY it with these homemade carpet cleaners to help wipe out tough carpet stains, from red wine to pet urine. The post Best DIY Carpet Cleaners for All Types of ...