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Supelco

Phenol red

pH indicator, Reag. Ph Eur

Synonym(s):

Phenol red

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About This Item

Linear Formula:
(C6H4OH)2C7H4SO3
CAS Number:
Molecular Weight:
354.38
MDL number:
UNSPSC Code:
12171502
EC Index Number:
205-609-7
NACRES:
NA.21

product name

Phenol red, (phenolsulfonphthalein) Reag. Ph Eur

agency

reag. Ph. Eur.

Quality Level

assay

98.0-102.0% (bromatometric, calculated on dried substance)

form

solid

loss

≤1.0% loss on drying, 105°C

mp

>300 °C

bulk density

200‑300 kg/m3

storage temp.

no temp limit

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

Related Categories

Application

  • Antitussive, Expectorant and Antipyretic Effect of the Ethanolic Extract of the Leaves of Momordica charantia L.: This study investigates the application of phenol red in assessing the bioactivities of plant extracts, demonstrating the versatility of phenol red in chemical assays (Ribeiro et al., 2024).
  • Chemical Analysis by LC-MS of Cannabis sativa Root Samples from Northeast Brazil and Evaluation of Antitussive and Expectorant Activities.: Phenol red was used as part of the LC-MS methodology to analyze plant roots, highlighting its role in modern analytical techniques (Menezes et al., 2022).
  • Quantifying Sample Collection and Processing Impacts on Fiber-Based Tear Fluid Chemical Analysis.: Phenol red is utilized to quantify changes in tear fluid composition, underscoring its importance in clinical chemical analysis (Barmada & Shippy, 2020).
  • The In Vitro Activity of Essential Oils against Helicobacter Pylori Growth and Urease Activity.: This research uses phenol red in enzyme inhibition studies, contributing to the understanding of antimicrobial properties of essential oils (Korona-Glowniak et al., 2020).

Analysis Note

Assay (bromatometric, calculated on dried substance): 98.0 - 102.0 %
Identity (UV/VIS-Spectrum): passes test
Identity (Color transition): passes test
Identity (Bromination): passes test
Insoluble substances: ≤ 0.5
Sulfated ash: ≤ 0.2
Loss on Drying (105°C): ≤ 1.0

pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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