114510

Methyl Orange

ACS reagent, Dye content 85 %

• Synonyme(s) : 4-[4-(Dimethylamino)phenylazo]benzenesulfonic acid sodium salt, Acid Orange 52, Helianthin, Orange III
• Formule empirique (notation de Hill): C₁₄H₁₄N₃NaO₃S
• Numéro CAS: 547-58-0
• Poids moléculaire : 327.33
• Numéro C.I. (Colour Index): 13025
• Numéro Beilstein : 4732884
• Numéro CE : 208-925-3
• Numéro MDL: MFCD00007502
• Code UNSPSC : 12171500
• ID de substance PubChem : 24847177
• Nomenclature NACRES : NA.47

Propriétés

• Qualité: ACS reagent
• Forme: powder
• Composition: Dye content, 85%
• Technique(s): titration: suitable
• Couleur: orange
• pH: 3.0-4.4, pink to yellow
• visual transition interval: 3.2-4.4, red to yellow
• Pf: >300 °C
• λmax: 505 nm
• Application(s): diagnostic assay manufacturing; hematology; histology
• Température de stockage: room temp
• Chaîne SMILES: [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+;
• Clé InChI: STZCRXQWRGQSJD-GEEYTBSJSA-M

Description

Description générale

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.

Application

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.

Actions biochimiques/physiologiques

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

Informations sur la sécurité

• Pictogrammes: GHS06
• Mention d'avertissement: Danger
• Mentions de danger: H301
• Conseils de prudence: P301 + P330 + P331 + P310
• Classification des risques: Acute Tox. 3 Oral
• Code de la classe de stockage: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable
• Équipement de protection individuelle: Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges