Bromothymol Blue sodium salt for microscopy (Bot., Hist., Vit.), indicator (pH 6.0-7.6) (1g)

SKU:
18470-1G
  • $30.00

    • Description

    18470 Sigma-Aldrich

    Bromothymol Blue sodium salt

    for microscopy (Bot., Hist., Vit.), indicator (pH 6.0-7.6)

    Synonym: 3′,3′′-dibromothymolsulfonephthalein sodium salt, Bromthymol Blue sodium salt

    • CAS Number 34722-90-2

       

    • Empirical Formula (Hill Notation) C27H27Br2NaO5S

       

    • Molecular Weight 646.36

       

    •  Beilstein/REAXYS Number 6887926

       

    •  EC Number 252-169-7

       

    •  MDL number MFCD00077263

       

    •  PubChem Substance ID 57647742

       

    •  NACRES NA.25

    Description

    General description

    Bromothymol blue is a pH indicator for weak acids and bases. In neutral solution, it appears bluish-green. At pH above 7.6 it appears blue, and at pH below 6.0 it appears yellow.
    Bromothymol blue (BTB) is an anionic dye. It can be protonated or deprotonated to generate yellow or blue. BTB helps to make ion-pair complex, that is used to identify several pharmaceutical compounds with the help of extractive spectrophotometric methods.[2]

    Application

    Suitable for use:
    • In preparations of pH indicator solutions
    • In phospholipid staining on tissues and cells prepared on microscopy slides

    Properties

    Related Categories Analytical Reagents, Analytical/Chromatography, Base Ingredients for Media, Indicators, Microbiology,
    More...
    Quality Level   100
    grade   for microscopy (Bot., Hist., Vit.)
      for molecular biology
      indicator (pH 6.0-7.6)
    form   powder
    application(s)   titration: suitable
    visual transition interval   6.0 - 7.6, yellow to blue
    storage temp.   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+;
    InChI key   NMKFVGALBGZKGW-FKWCIMQXSA-M