Methylorange in ACS analysereinem Wasser 85% (Farbstoffgehalt), Sigma-Aldrich®
Lieferant: SIGMA-ALDRICH MICROSCOPY
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Gefahr
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Synonyme:
Natrium-4-(4-dimethylaminophenylazo)benzolsulfonat
, 4-(4-(Dimethylamino)phenylazo)benzolsulfonsäure Natriumsalz
, Orange III
, (4-(Dimethylamino)azobenzol-4'-sulfonsäure Natriumsalz
, Goldorange
, Helianthin
M-Clarity™ Qualitätsstufe = 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
Formel:
C₁₄H₁₄N₃NaO₃S Molecular Weight: 327,34 g/mol Siedepunkt: ∼90 °C (1013 hPa) Schmelzpunkt: >300 °C Dichte: ∼1 g/cm³ (20 °C) Flammpunkt: 38 °C Lagertemperatur: Raumtemperatur |
MDL:
MFCD00007502 CAS-Nummer: 547-58-0 EINECS: 208-925-3 UN: 3143 ADR: 6.1,III Merck Index: 12,06180 |
Spezifikation Testergebnisse
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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