205486

Xylenol Blue

indicator grade, Dye content 90 %

• Synonym(s): p-Xylenol Blue, p-Xylenolsulfonephthalein
• Empirical Formula (Hill Notation): C₂₃H₂₂O₅S
• CAS Number: 125-31-5
• Molecular Weight: 410.48
• Beilstein: 363132
• EC Number: 204-736-5
• MDL number: MFCD00005870
• UNSPSC Code: 12171500
• PubChem Substance ID: 24852335
• NACRES: NA.47

Properties

• grade: indicator grade
• Quality Level: 200
• form: powder
• composition: Dye content, 90%
• technique(s): titration: suitable
• useful pH range: 1.2-2.8, red to yellow(acid); 8.0-9.8, yellow to violet(alkaline)
• mp: 212 °C (dec.) (lit.)
• λmax: 424 nm
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: room temp
• SMILES string: Cc1cc(c(C)cc1O)C2(OS(=O)(=O)c3ccccc23)c4cc(C)c(O)cc4C
• InChI: 1S/C23H22O5S/c1-13-11-20(24)15(3)9-18(13)23(19-10-16(4)21(25)12-14(19)2)17-7-5-6-8-22(17)29(26,27)28-23/h5-12,24-25H,1-4H3
• InChI key: MGUKYHHAGPFJMC-UHFFFAOYSA-N

Description

General description

Xylenol Blue is a dark brown powder and it belongs to the class of sulfonephthalein dyes. Xylenol Blue changes color from red (pH 1.2) to yellow (2.8) and yellow (8.0) to blue (9.6). It is widely used in food storage, drugs, determining bacterial growth, microbial assays and determining lipase.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves