114510

Methylorange

ACS reagent, Dye content 85 %

• Synonym(e): 4-(4′-Dimethylaminophenylazo)-benzol-1-sulfonsäure Natriumsalz, Helianthin, Orange III, Säureorange 52, Tropaeolin D
• Empirische Formel (Hill-System): C₁₄H₁₄N₃NaO₃S
• CAS-Nummer: 547-58-0
• Molekulargewicht: 327.33
• Farbindexnummer: 13025
• Beilstein: 4732884
• EG-Nummer: 208-925-3
• MDL-Nummer: MFCD00007502
• UNSPSC-Code: 12171500
• PubChem Substanz-ID: 24847177
• NACRES: NA.47

Eigenschaften

• Qualität: ACS reagent
• Form: powder
• Zusammensetzung: Dye content, 85%
• Methode(n): titration: suitable
• Farbe: orange
• pH-Wert: 3.0-4.4, pink to yellow
• visual transition interval: 3.2-4.4, red to yellow
• mp (Schmelzpunkt): >300 °C
• λmax: 505 nm
• Anwendung(en): diagnostic assay manufacturing; hematology; histology
• Lagertemp.: room temp
• SMILES String: [Na+].CN(C)c1ccc(cc1)\N=N\c2ccc(cc2)S([O-])(=O)=O
• InChI: 1S/C14H15N3O3S.Na/c1-17(2)13-7-3-11(4-8-13)15-16-12-5-9-14(10-6-12)21(18,19)20;/h3-10H,1-2H3,(H,18,19,20);/q;+1/p-1/b16-15+;
• InChIKey: STZCRXQWRGQSJD-GEEYTBSJSA-M

Beschreibung

Allgemeine Beschreibung

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.

Anwendung

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.

Biochem./physiol. Wirkung

Methyl Orange is an azo dye which works as a pH indicator.

Sicherheitshinweise

• Piktogramme: GHS06
• Signalwort: Danger
• H-Sätze: H301
• P-Sätze: P301 + P330 + P331 + P310
• Gefahreneinstufungen: Acute Tox. 3 Oral
• Lagerklassenschlüssel: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• WGK: WGK 3
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• Persönliche Schutzausrüstung: Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges