Merck, 1072410100, Phenol red

Name: Phenol red
Brand: Merck
SKU: 1072410100

Size:100 g, Phenol red, indicator ACS

Catalog Number: 1072410100

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Category

Chemical Indicators

Pack Size100 g

TagsAnalytical Chemistry Analytical Reagents Indicators

CollectionsMerck Analytical Reagents Collection Merck Cell Culture Supplements & Reagents: Complete Solutions for Research & Bioproduction Merck Roche Life Science Products for PCR, RT‑PCR & Nucleic Acid Purification

Description

General description
Phenol red (phenolsulfonphthalein, PH R) belongs to the class of triphenylmethane dyes. It is a waterͰsoluble anionic dye, mostly used as a pH indicator in cell biology laboratories. Also, in different protocols, it is used to detect H2O2(Hydrogen peroxide).
Application
Phenol red can be used as a:
Dye in the preparation of phenol red/n-Si photodiode [phenol red/n-type silicon wafer] by spin coating technique. The device is appropriate for photo-detection applications.
Color-changing dye in the design of fiber optic pH sensor because as the acidity increases, the dye′s absorption properties shift from the green to the blue section of the spectrum.
Indicator in the determination of freshwater pH.

Features and Benefits
Phenol red is used to detect pH changes in cell culture,
pH is 6.4 or below yellow color
pH is 8.2 or above red color.

Analysis Note
Appearance of solution: passes test
1st transition range: pH 1.2 - pH 3.0brownish orange - yellow
2nd transition range: pH 6.5 - pH 8.0brownish yellow - red violet
Loss on drying (110 °C): ≤ 1
Transition range (according to ACS): passes test
ACS conforms

Specifications

General

UNSPSC Code	12171502
EC Index Number	205-609-7
NACRES	NA.21
Web Name Suffix Override	pH indicator, ACS
MDL number	MFCD00003552
SMILES string	[S]1(=O)(=O)OC(c4c1cccc4)(c3ccc(cc3)O)c2ccc(cc2)O
InChI	1S/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
InChI key	BELBBZDIHDAJOR-UHFFFAOYSA-N
grade	ACS reagent
form	solid
loss	≤1% loss on drying, 110°C
visual transition interval	1.2-3.0, brown-orange to yellow(1st transition range)
mp	>300 °C
bulk density	200‑300 kg/m3
storage temp.	2-30°C
Quality Level	200

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