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Due to a color change from blue to red at pH 3.0–5.2, Congo red can be used as a pH indicator.Since this color change is an approximate inverse of that of litmus, it can be used with litmus paper in a simple parlor trick: add a drop or two of Congo red to both an acid solution and a base solution.
Adopted in 1959 to replace the French Tricolour, it was the flag of the Republic of the Congo until 1970, when the People's Republic of the Congo was established. The new regime changed the flag to a red field with the coat of arms of the People's Republic in the canton. This version was utilized until the regime collapsed in 1991.
Green, yellow and red National colours of Congo Republic Djibouti: ... Cadet grey was an official color of the Confederate States Army: Czechoslovakia: Blue, white ...
Solvent red 80 12156 azo 6358-53-8: Congo corinth Erie garnet B Direct red 10 22145 diazo 2429-70-1: Congo red: Cotton red Direct red 28 22120 diazo 573-58-0: Coomassie brilliant blue: Brilliant blue R Acid blue 83 42660 triarylmethane 6104-59-2: Cotton scarlet Acid red 73 27290 diazo 5413-75-2: Coumarin 7 Disperse yellow 82 Solvent yellow 145
Colors white and gold, related to the two metals of European heraldry (argent and or) are sorted first. The five major colors of European heraldry (black, red, green, blue, and purple) are sorted next. Miscellaneous colors (murrey, tan, grey, and pink) are sorted last. Similar colors are grouped together to make navigation of this list practical.
Red dye No. 3 shows up in a lot of processed foods, Cording says. “Candy is where it’s most commonly seen,” she says. “But it’s also in certain drinks, like oral nutrition supplements ...
Democratic Republic of the Congo; Use: National flag and ensign: Proportion: 3:4 [citation needed]: Adopted: 18 February 2006; 19 years ago (): Design: A sky blue field with a yellow five-pointed star in the canton and cut yellow-fimbriated red diagonal band from the lower hoist-side to the upper fly-side
Pigment red is the color red that is achieved by mixing process (printer's) magenta and process (printer's) yellow in equal proportions. This is the color red that is shown in the diagram located at the bottom of the following website offering tintbooks for CMYK printing: Tintbooks - Get Accurate CMYK Color Results For Your Printing Projects.