Votre recherche pour: 3,5-Dibromo-4-hydroxybenzonitrile

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Vert de bromocresol sel de sodium dans de l'eau, qualité ACS du réactif ≥90% (par HPLC), Sigma-Aldrich®

Fournisseur: SIGMA ALDRICH MICROSCOPY

Description: Bromocresol Green (BCG), also known as bromcresol green, is a synthetic, anionic, triphenylmethane dye belonging to the phthalein and sulphonphthalein dyes group. It is commonly used as a pH indicator as it changes colour from yellow to blue-green at pH 3,8 to 5,4. The monosodium salt of bromocresol green is highly ionisable in water. The dye at a higher pH level produces a large and weakly lipophilic dianion.

Bleu de tétrabromophénol, Sigma-Aldrich®

Fournisseur: SIGMA ALDRICH MICROSCOPY

Description: Tetrabromophenol Blue (TBPB) belongs to the group of sulfonephthalein acid-base indicators. It is employed in the potentiometric titration of the halogens with Hg₂(NO₃)₂. In addition, it has been used as a dye indicator in urine dipstick test to detect proteinuria. In this assay, with increasing concentration of urinary protein, TBPB sequentially changes colour from pale green to blue. Binding of TBPB to proteins is dependent on pH.