114472

Cresol red

indicator grade, Dye content 95 %

• Sinônimo(s): o-Cresolsulfonphthalein
• Fórmula empírica (Notação de Hill): C₂₁H₁₈O₅S
• Número CAS: 1733-12-6
• Peso molecular: 382.43
• Beilstein: 343399
• Número CE: 217-064-2
• Número MDL: MFCD00005878
• Código UNSPSC: 12171500
• ID de substância PubChem: 24847173
• NACRES: NA.47

Propriedades

• grau: indicator grade
• Nível de qualidade: 200
• Formulário: powder or crystals
• composição: Dye content, 95%
• técnica(s): titration: suitable
• cor: red-brown
• pH: 7.2-8.8, yellow to red
• faixa de pH útil: 1.8-2.0, orange to yellow(acid); 7.0-8.8, yellow to violet(alkaline)
• pf: 290 °C
• densidade: 0.998 g/cm³
• λmax: 367 nm (2nd); 570 nm
• aplicação(ões): diagnostic assay manufacturing; hematology; histology
• temperatura de armazenamento: room temp
• cadeia de caracteres SMILES: Cc1cc(ccc1O)C2(OS(=O)(=O)c3ccccc23)c4ccc(O)c(C)c4
• InChI: 1S/C21H18O5S/c1-13-11-15(7-9-18(13)22)21(16-8-10-19(23)14(2)12-16)17-5-3-4-6-20(17)27(24,25)26-21/h3-12,22-23H,1-2H3
• chave InChI: OBRMNDMBJQTZHV-UHFFFAOYSA-N

Descrição

Descrição geral

Cresol Red, also known as o-cresol red, belongs to the phthalein and sulphonphthalein group of dyes. Cresol red changes color from orange to yellow at pH between 0.2-1.8 and yellow to violet at pH between 7.0-8.8. In alkaline solutions, cresol red is present as a hydrophilic dianion. The dianion is small and is violet in color, possessing a larger conjugated system than the yellow hydroxyquinone.

Aplicação

Cresol Red is a widely used pH indicator for routine pH assessments like microbial culture media preparations. In addition, Cresol red is a suitable constituent of PCR reagent systems. Cresol Red is used as a tracking dye in DNA, RNA (agarose), and protein (polyacrylamide) electrophoresis.

Informações de segurança

• Código de classe de armazenamento: 11 - Combustible Solids
• Classe de risco de água (WGK): WGK 3
• Equipamento de proteção individual: dust mask type N95 (US), Eyeshields, Gloves