CAS 493-52-7

Methyl red

Description:

Methyl red is an organic compound classified as a pH indicator, commonly used in titrations and various laboratory applications. It appears as a red to yellow powder, depending on the pH of the solution it is in; it transitions from red at a pH below 4.4 to yellow at a pH above 6.2. Methyl red has a molecular formula of C15H15N3O2 and a molecular weight of approximately 269.3 g/mol. It is soluble in alcohol and slightly soluble in water, making it useful in various solvent systems. The compound exhibits a strong color change, which is particularly valuable in determining the endpoint of acid-base titrations. Methyl red is also known for its stability under normal laboratory conditions, although it can degrade when exposed to strong light or heat. Additionally, it has applications in microbiology for differentiating between certain bacterial species based on their metabolic activity. However, safety precautions should be taken, as it can be harmful if ingested or inhaled.

Formula: C₁₅H₁₅N₃O₂

InChI: InChI=1S/C15H15N3O2/c1-18(2)12-9-7-11(8-10-12)16-17-14-6-4-3-5-13(14)15(19)20/h3-10H,1-2H3,(H,19,20)

InChI key: InChIKey=CEQFOVLGLXCDCX-UHFFFAOYSA-N

SMILES: N(=NC1=CC=C(N(C)C)C=C1)C2=C(C(O)=O)C=CC=C2

Synonyms:

• 2-((4-Dimethylamino)Phenyl)Azo)-Benzoic Acid
• 2-(4-Dimethylaminophenylazo)Benzoic Acid
• 2-(4-Dimethylaminophenylazo)benzoesaeure
• 2-(N,N-Dimethyl-4-aminophenyl)azobenzenecarboxylic acid
• 2-Carboxy-4'-(dimethylamino)azobenzene
• 2-[(p-Dimethylamino)phenyl]azobenzoic acid
• 2-[2-[4-(Dimethylamino)phenyl]diazenyl]benzoic acid
• 2-[[4-(Dimethylamino)phenyl]diazenyl]benzoic acid
• 4'-(Dimethylamino)azobenzene-2-carboxylic acid
• 4-(2-Carboxyphenylazo)-N,N-dimethylaniline
• Acid Red 2
• Acide 2-(4-dimethylaminophenylazo)benzoique
• Acido 2-(4-Dimetilaminofenilazo)Benzoico
• Benzoic acid, 2-[2-[4-(dimethylamino)phenyl]diazenyl]-
• Methyl Red
• Methyl red C.I. 13020
• Nsc 215212
• Nsc 34729
• Nsc 9597
• P-Dimethylaminophenylazo-Benzenecarboxylic Acid
• o-Methyl red
• o-[[p-(Dimethylamino)phenyl]azo]benzoic acid
• p-(Dimethylamino)azobenzene-o-carboxylic acid
• BROMOCRESOL GREEN/METHYL RED, MIXED INDICATOR
• BROMOCRESOL GREEN/METHYL RED, MIX INDICATOR FOR ALKALINITY
• Benzoic acid, 2-[[4-(dimethylamino)phenyl]azo]-
• C.I. Acid Red 2 (8CI)
• METHYL RED INDICATOR
• C.I. Acid Red 2
• 5-(dimethylamino)-2-[(E)-phenyldiazenyl]benzoic acid
• METHYL RED MIXED SOLUTION
• 2-{(E)-[4-(dimethylamino)phenyl]diazenyl}benzoic acid
• CI NO 13020
• BROMOCRESOL GREEN-METHYL RED

Methyl Red (0.04% in Water) [for pH Determination]

CAS: 493-52-7

Formula: C₁₅H₁₅N₃O₂

Color and Shape: Light yellow to Yellow to Orange clear liquid

Molecular weight: 269.30

Ref: 3B-M0056

Methyl Red

CAS: 493-52-7

Formula: C₁₅H₁₅N₃O₂

Purity: >98.0%(HPLC)

Color and Shape: Orange to Brown to Dark purple powder to crystal

Molecular weight: 269.30

Ref: 3B-M0421

Methyl Red

CAS: 493-52-7

Formula: C₁₅H₁₅N₃O₂

Purity: >92.0%(HPLC)

Color and Shape: Orange to Brown to Dark purple powder to crystal

Molecular weight: 269.30

Ref: 3B-M0702

Methyl Red

CAS: 493-52-7

Bacterial strains isolated from dye-contaminated sludge decolorized a toxic azo dye, namely, methyl red (MR). Methyl red is used in the methyl red test (MR test), used to identify bacteria producing stable acids by mechanisms of mixed acid fermentation of glucose This Thermo Scientific Chemicals br

Formula: C₁₅H₁₅N₃O₂

Color and Shape: Powder or crystals, Dark red to brown to purple to violet

Molecular weight: 269.30

Ref: 02-A16690

Methyl Red, ACS

CAS: 493-52-7

pH indicator in pH range 4.2 - 6.3Methyl red is used as a pH indicator. It is red in pH less than 4.4 and yellow in pH over 6.2. It is used to study its degradation using Fenton's reagent. In microbiology, it is used to identify bacteria producing stable acids by mechanisms of mixed acid fermentatio

Formula: C₁₅H₁₅N₃O₂

Molecular weight: 269.30

Ref: 02-036682

Methyl Red (C.I. 13020)

CAS: 493-52-7

Formula: C₁₅H₁₅N₃O₂

Color and Shape: Red to dark red or purple powder

Molecular weight: 269.30

Ref: 7W-GT1411

Methyl red

CAS: 493-52-7

Methyl red

Purity: 98%

Molecular weight: 269.30g/mol

Ref: 54-OR95401

Acid Red 2

CAS: 493-52-7

Formula: C₁₅H₁₅N₃O₂

Color and Shape: Neat

Molecular weight: 269.30

Ref: 04-C10028690

Methyl Red (0.1% in ca. 95% Ethanol) [for Titration]

CAS: 493-52-7

Formula: C₁₅H₁₅N₃O₂

Color and Shape: Red clear liquid

Molecular weight: 269.30

Ref: 3B-M0067

Methyl Red

CAS: 493-52-7

Formula: C₁₅H₁₅N₃O₂

Molecular weight: 269.30

Ref: 4Z-D-164026

Methyl Red

CAS: 493-52-7

Formula: C₁₅H₁₅N₃O₂

Color and Shape: Dark Purple To Black

Molecular weight: 269.3

Ref: TR-M333065

Methyl red

CAS: 493-52-7

Methyl red is a dye that has been used in molecular biology as a measure of the activity of DNA, RNA, and protein enzymes. The methyl red test is based on the ability of the dye to undergo a color change from red to yellow as a result of an increase in pH. Methyl red reacts with dinucleotide phosphate by intramolecular hydrogen transfer and can be used to detect the presence of antimicrobial agents, such as antibiotics, which inhibit this reaction. The optimum concentration for methyl red is at 1mg/L in human serum and wastewater treatment. A Langmuir adsorption isotherm was used to determine its surface methodology. The optical sensor for methyl red is based on its fluorescence properties.
Methyl Red has been shown to have no significant effect on aerobic bacteria such as Aerobacter aerogenes (1).

Formula: C₁₅H₁₅N₃O₂

Purity: Min. 95%

Color and Shape: Powder

Molecular weight: 269.3 g/mol

Ref: 3D-FM01516

Methyl Red free acid ACS

CAS: 493-52-7

Formula: C₁₅H₁₅N₃O₂

Purity: 95.0%

Color and Shape: Solid

Molecular weight: 269.304

Ref: 10-F493794

Methyl Red ACS, ExiPlus, Multi-Compendial

CAS: 493-52-7

Formula: C₁₅H₁₅N₃O₂

Color and Shape: Dark red to maroon to violet or purple, Powder or crystalline compound

Molecular weight: 269.31

Ref: SR-40431

Methyl Red extrapure AR

CAS: 493-52-7

Formula: C₁₅H₁₅N₃O₂

Color and Shape: Dark red to maroon to violet or purple, Crystalline powder

Molecular weight: 269.31

Ref: SR-49449