Merck
All Photos(4)

114510

Sigma-Aldrich

Methyl Orange

ACS reagent, Dye content 85 %

Synonym(s):
4-[4-(Dimethylamino)phenylazo]benzenesulfonic acid sodium salt, Acid Orange 52, Helianthin, Orange III
Empirical Formula (Hill Notation):
C14H14N3NaO3S
CAS Number:
Molecular Weight:
327.33
Número do índice de cores:
13025
Beilstein:
4732884
Número EC:
Número MDL:
ID de substância PubChem:
NACRES:
NA.47

grau

ACS reagent

Nível de qualidade

200

forma

powder

composição

Dye content, 85%

technique(s)

titration: suitable

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

temperatura de armazenamento

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+;

InChI key

STZCRXQWRGQSJD-GEEYTBSJSA-M

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Descrição geral

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.

Aplicação

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.

Embalagem

25, 100, 500 g in glass bottle

Ações bioquímicas/fisiológicas

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

Pictogramas

Skull and crossbones

Palavra indicadora

Danger

Frases de perigo

Declarações de precaução

Classificações de perigo

Acute Tox. 3 Oral

Código de classe de armazenamento

6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 3

Ponto de fulgor (ºF)

Not applicable

Ponto de fulgor (ºC)

Not applicable

Equipamento de proteção individual

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges

Certificate of Analysis

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Certificate of Origin

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