114529-25G Display Image

Phenol Red, ACS reagent

Code: 114529-25G D2-231

Application

Suitable for use as a pH indicator.

Phenol red is commonly used as a pH indicator in biology and medicine. It is incorporated into microbiological culture m...


read more

Your Price
£89.00 25G
£106.80 inc. VAT

Application

Suitable for use as a pH indicator.

Phenol red is commonly used as a pH indicator in biology and medicine. It is incorporated into microbiological culture media for the identification of Escherichia coli strains. Its clinical diagnostic applications include the investigation of gastric and duodenal ulcers and the assessment of tear function in ophthalmology. Phenol red is also used as a tracer to assess the permeability of the ileal mucosal membrane and to assess bacterial leakage through root-filling materials in dentistry.Phenol Red has been used for the preparation of phenol red gavage meal for measurement of gastric emptying in rats.

Biochem/physiol Actions

Phenol Red is a pH indicator which changes color from yellow to red.

General description

Phenol Red is a phenolsulfonphthalein compound. It is present as a sulfonated hydroxyquinone in weakly acidic aqueous solutions. In alkaline solutions, the dye forms a hydrophilic dianion (a small, red anion that has a larger conjugated system than the yellow hydroxyquinone).

Packaging

5, 25 g in glass bottle

ε (extinction coefficient)≥55000 at 555-561 nm in H2O, ≥10000 at 288-294 nm in H2O, ≥7000 at 357-363 nm in H2O
λmax557 nm (2nd), 360 nm
application(s)diagnostic assay manufacturinghematologyhistology
clarity of solnpasses test
formpowder
gradeACS reagent
InChI keyBELBBZDIHDAJOR-UHFFFAOYSA-N
InChI1S/C19H14O5S/c20-15-9-5-13(6-10-15)19(14-7-11-16(21)12-8-14)17-3-1-2-4-18(17)25(22,23)24-19/h1-12,20-21H
Quality Level200
SMILES stringOc1ccc(cc1)C2(OS(=O)(=O)c3ccccc23)c4ccc(O)cc4
storage temp.room temp
technique(s)titration: suitable
visual transition interval6.8-8.2, yellow to red
Code
Description
Unit Size
List Price
Qty
114529-5G
Unit:EACH
List Price: £21.60
Source:List Price
ADD
Cas Number143-74-8
This product has met the following criteria: