Methyl red sodium
Based on 1 Customer Validation
Methyl red sodium is a pH-sensitive acid-base indicator and colorimetric reagent with a pKa of 5.1. Methyl red sodium achieves visual judgment of the titration endpoint through reversible structural changes of protonation (red, pH < 4.4) and deprotonation (yellow, pH > 6.2). Methyl red sodium is widely used in acid-base titration in chemical analysis and buffer pH monitoring in biochemistry.
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- CAS No.: 845-10-3
- Formule: C15H14N3NaO2
- Masse moléculaire:291.29
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Stockage:
4°C, sealed storage, away from moisture and light
* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)
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Activité biologique
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Chemical Information
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Solvant et solubilité
- Pureté et documentation
- Références
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Help & FAQs
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HY-Y0699
Methyl red
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HY-118907
Methyl Orange
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Neutral Red
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HY-Y0700
Calconcarboxylic acid
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HY-D0166A
Neutral Red (IND)
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HY-D0505
Eosin Y
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HY-118907R
Methyl Orange (Standard)
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HY-Y0699R
Methyl red (Standard)
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HY-D0236
Congo Red
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HY-W110791
Sodium diphenylamine-4-sulfonate
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HY-D0931
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Activité biologique
Methyl red sodium is used as an acid-base indicator in titration experiments. When the pH changes from 4.4 to 6.2, the color of the solution changes from red to yellow, which can be used to determine the titration endpoint[1].
Methyl red sodium can be dissolved in ethanol to make a 0.1% solution. A few drops are added to the solution to be tested. During the titration process, the color change is observed to determine the pH endpoint[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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CAS No. 845-10-3
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Appearance Solid
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Masse moléculaire 291.29
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Formule C15H14N3NaO2
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Color Brown to black
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SMILES
O=C(O[Na])C1=CC=CC=C1/N=N/C2=CC=C(N(C)C)C=C2
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Livraison
Room temperature in continental US; may vary elsewhere.
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Stockage
4°C, sealed storage, away from moisture and light
* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)
Solvant et solubilité
H2O : < 0.1 mg/mL (insoluble)
Pureté et documentation
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Fiche technique (270 KB)
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SDS (393 KB)
- English - EN (393 KB)
- Français - FR (393 KB)
- Deutsch - DE (393 KB)
- Norwegian - NO (393 KB)
- Español - ES (393 KB)
- Swedish - SV (393 KB)
- Italian - IT (393 KB)
- Korean - KR (393 KB)
- Portuguese - PT (393 KB)
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Instruction de manipulation (2659 KB)
Références
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Methyl red sodium Related Classifications
HY-W110780 Related Classifications
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