methyl red


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Related to methyl red: methyl orange

methyl red

[′meth·əl ′red]
(organic chemistry)
(CH3)2NC6H4NNC6H4COOH A dark red powder or violet crystals with a melting point of 180°C; soluble in alcohol, ether, and glacial acetic acid; used as an acid-base indicator (pH 4.2-6.2).
References in periodicals archive ?
"I" is for indole; "M" is for methyl red; "V" is for Voges-Proskauer, and "C" is for citrate, lowercase "i" is added for ease of pronunciation.
The principal biochemical tests performed for this purpose include, lactose fermentation test (LAC), indole test (IND), methyl red test (MR), Voges-Proskauer test (VP), urease test (URE), catalase test (CAT), aerobic and anaerobic test (Ae/An).
The team optimized its design by incorporating two Cy3 residues separated by two nucleotide bases on one end of the probe strand, and two nitro methyl red residues separated by two nucleotide bases on the other end.
It also showed negative result for catalase test, nitrate reduction test, citrate test, methyl red Voges-Proskeur test, casein hydrolysis test but positive result for glucose, lactose and sucrose fermentation (Table 1).
Dye dosimeters are well documented and different researchers used various colors such as Congo red [3], brilliant green [4], anionic triphenyl-methane dye solutions [5], chlorantine fast green BLL [6] and methyl red [7] to prepare dye dosimeters.
Boric acid, trichloroacetic acid, magnesium oxide, methyl red, methylene blue, TBA and hydrochloric acid were purchased from Shanghai Sinopharm Chemical Reagent Co.
Biochemical tests such as oxidase, catalase, gelatin liquefaction, urea hydrolysis, methyl red and Voges-Proskauer, starch hydrolysis, indole, nitrate and nitrite reduction, triple sugar iron test (TS1), and HzS production were also performed as per the standard test.
ruckeri suspected isolates; growth in Triple Sugar Iron agar, Urease, Citrate, Indole, Methyl Red, Voges Proskauer, Oxidase, Catalase, Lysine, Decarboxylase, ONPG, Arginine dihydrolase, Ornithine Decarboxylase, Tryptophan Deaminase and Lactose, Glucose, Sucrose, Maltose, Mannitol, Melibiose, Arabinose, Rhamnose, Inositol carbonhydrate fermentation tests were performed.
Conventional tests were performed by bacterial culture on: Indole (BD), Simmons Citrate (Oxoid), Voges Proskauer (BD), Triple Sugar-Iron (BD), Urea (BD), Motility, Methyl Red (Oxoid) and gas production (BD) (11).
All C freundii isolates, however, are 100% positive for methyl red (MR) test and 100% negative for Voges-Proskauer (VP) test, while most species of Enterobacter show the opposite results.
Some irreversible indicators used for bromate titrations are methyl red (color changes from red to yellow), methyl orange (color changes from red to yellow), and indigo sulfonic acid (color changes from blue to colorless) (2): Reversible redox indicators that may be used are p-ethoxychrysoiden (color changes from red to colorless), quinoline yellow (color changes from yellow-green to colorless), and a-naphthoflavone (color changes from pale yellow to orange brown) (2).
Numerous studies have attempted to explain the effect of gamma radiation on Radio-chromic dye film based on polyvinyl butyral (PVB) containing methyl red (MR) dye of different concentrations.