Orangé de méthyle dans de l'eau, qualité ACS du réactif 85% (teneur en colorant), Sigma-Aldrich®
Marques : SIGMA ALDRICH MICROSCOPYTotal Evaluation: 0
Moyenne des Notes : 0.0 sur 5
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Danger
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Synonyme(s):
4-(4-Diméthylaminophénylazo)benzènesulfonate de sodium
M-Clarity™ (Niveau de Qualité) = MQ200
Methyl orange (C.I. 13025) is the sodium salt of p-dimethylaminoazobenzenesulfonic acid. It is an orange-colored synthetic dye, which changes color depending on the pH of the solution. It develops a red color in acidic solution and yellow color in basic solution.
- Methyl orange is used as a:
- pH indicator in the cell sap
- Counterstain to crystal violet in staining pollen tubes
- Component of a polychrome histological stain
- Solution indicator, such as in assays of oxalic and malonic acids
- In other biomedical applications that include use in film dosimeters and as a reagent for the assay of bromide ions
Formule:
C₁₄H₁₄N₃NaO₃S Poids moléculaire: 327.34 g/mol Point d'ébullition: ∼90 °C (1013 hPa) Point de fusion: >300 °C Densité: ∼1 g/cm³ (20 °C) Point éclair: 38 Température de stockage: Température ambiante |
Numéro MDL:
MFCD00007502 Numéro CAS: 547-58-0 EINECS: 208-925-3 UN: 3143 ADR: 6.1 III Indice Merck: 13,06127 |
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Résultats des tests de spécification
Appearance (colour) | Orange |
Appearance (form) | Powder |
Infrared spectrum | Conforms to structure |
Visual interval, pH 3.0 pink or red | Pass |
Visual interval, pH 3.2 pinkish orange | Pass |
Visual interval, pH 4.4 yellow | Pass |
Appearance (clarity) | Pass |
Carbon | 43.7 - 59.1% |
Nitrogen | 10.9 - 14.8% |
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