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. Nr.: 845-10-3
- Formel: C15H14N3NaO2
- Molecular Weight:291.29
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Speicherung:
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)
Biologische Aktivität
Beschreibung
In Vitro
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. Nr. 845-10-3
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Appearance Solid
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Molecular Weight 291.29
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Formel 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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Versand
Room temperature in continental US; may vary elsewhere.
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Speicherung
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)
Lösungsmittel & Löslichkeit
In Vitro:
H2O : < 0.1 mg/mL (insoluble)
Reinheit & Dokumentation
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Data Sheet (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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Handling Instructions (2659 KB)
Verweise
Calculators
Konzentration (Stammlösung) × Volumen (Stammlösung) = Konzentration (Ziellösung) × Volumen (Ziellösung)