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114529

Sigma-Aldrich

Phenol Red

ACS reagent

Sinonimo/i:

Phenolsulfonphthalein

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About This Item

Formula empirica (notazione di Hill):
C19H14O5S
Numero CAS:
143-74-8
Peso molecolare:
354.38
Beilstein:
326470
Numero CE:
205-609-7
Numero MDL:
MFCD00003552
Codice UNSPSC:
12171500
ID PubChem:
24847179
NACRES:
NA.47

Grado

ACS reagent

Livello qualitativo

200

Forma fisica

powder

Limpidezza della soluzione

passes test

tecniche

titration: suitable

visual transition interval

6.8-8.2, yellow to red

Solubilità

water: 0.77 g/L at 100 °C

λmax

360 nm
557 nm (2nd)

ε (coefficiente d’estinzione)

≥10000 at 288-294 nm in H2O
≥55000 at 555-561 nm in H2O
≥7000 at 357-363 nm in H2O

applicazioni

diagnostic assay manufacturing
hematology
histology

Temperatura di conservazione

room temp

Stringa SMILE

Oc1ccc(cc1)C2(OS(=O)(=O)c3ccccc23)c4ccc(O)cc4

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
BELBBZDIHDAJOR-UHFFFAOYSA-N

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Descrizione generale

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).

Applicazioni

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.
Suitable for use as a pH indicator.

Azioni biochim/fisiol

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

Pittogrammi

Exclamation mark
GHS07

Avvertenze

Warning

Indicazioni di pericolo

H315,H335

Classi di pericolo

Skin Irrit. 2 - STOT SE 3

Organi bersaglio

Respiratory system

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

dust mask type N95 (US), Eyeshields, Gloves

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Certificati d'analisi (COA)

Lot/Batch Number
0000389289
0000389290
0000372792
0000372791
0000356118

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