318752

Bromthymolblau Natriumsalz -Lösung

0.04 wt. % in H₂O

• Empirische Formel (Hill-System): C₂₇H₂₇Br₂NaO₅S
• CAS-Nummer: 34722-90-2
• Molekulargewicht: 646.36
• MDL-Nummer: MFCD00077263
• UNSPSC-Code: 12171500
• PubChem Substanz-ID: 24859144
• NACRES: NA.47

Eigenschaften

• Form: liquid
• Qualitätsniveau: 200
• Konzentration: 0.04 wt. % in H₂O
• pH-Wert: 6.0-7.6, yellow to blue
• Dichte: 0.99 g/mL at 25 °C (lit.)
• λmax: 615 nm
• ε (Extinktionskoeffizient): ≥13000 at 304-310 nm in 0.1 M NaOH at 0.005 g/L; ≥8000 at 391-397 nm in 0.1 M NaOH at 0.005 g/L
• Anwendung(en): diagnostic assay manufacturing; hematology; histology
• Lagertemp.: room temp
• SMILES String: [Na+].CC(C)c1cc(c(C)c(Br)c1O)\C(=C2/C=C(C(C)C)C(=O)C(Br)=C2C)c3ccccc3S([O-])(=O)=O
• InChI: 1S/C27H28Br2O5S.Na/c1-13(2)18-11-20(15(5)24(28)26(18)30)23(17-9-7-8-10-22(17)35(32,33)34)21-12-19(14(3)4)27(31)25(29)16(21)6;/h7-14,30H,1-6H3,(H,32,33,34);/q;+1/p-1/b23-21+;
• InChIKey: NMKFVGALBGZKGW-FKWCIMQXSA-M

Beschreibung

Allgemeine Beschreibung

Bromothymol Blue is a sulfonated hydroxyquinone in acidic solutions. In alkaline solutions, it is present as a dianion that is blue with a larger conjugated system than the yellow hydroxyquinone. Both forms are lipophilic. It is also known as bromthymol blue or dibromothymolsulfonphthalein.

Anwendung

Bromothymol blue has various applications in biology and medicine. It is suitable for demonstrating fungal hyphae within plant roots. It is used as a vital stain to trace the movement of fluids from the lymph. It is added to an agar gel microbial culture medium for enumeration of Bacillus cereus. Bromothymol blue is also used as a pH indicator due to its precise color transition properties at neutrality.

Biochem./physiol. Wirkung

Bromothymol Blue is a pH indicator which changes color from yellow (pH 6.0) to blue (7.6). It belongs to the class of sulfonephthalein dyes.

Sicherheitshinweise

• Lagerklassenschlüssel: 10 - Combustible liquids
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• Persönliche Schutzausrüstung: Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)