Phenol Red CAS 143-74-8
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Phenol Red CAS 143-74-8

Phenol Red is a deep red crystalline powder, soluble in water, alcohol, acetone, almost insoluble in ether and chloroform.
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  • 143-74-8

  • bosschemical

  • 143-74-8

Phenol Red Basic information
Product Name: Phenol Red
CAS: 143-74-8
MF: C19H14O5S
MW: 354.38
EINECS: 205-609-7
Mol File: 143-74-8.mol
Phenol Red Chemical Properties
Melting point >300 °C
Boiling point >300°C
bulk density 200-300kg/m3
density 1.445 Mg m-3
refractive index 1.5300 (estimate)
Fp >300°C
storage temp. no restrictions.
solubility 1 M NaOH: soluble1mg/mL
pka 7.9(at 25℃)
form Solid
color Red
Odor Odorless
PH 6.8~8.4
PH Range 6.6(YELLOW)-8.0(RED)
Water Solubility 0.77 g/L
ε(extinction coefficient) ≥10000 at 288-294nm in H2O
≥55000 at 555-561nm in H2O
≥7000 at 357-363nm in H2O
λmax 557nm, 558nm, 360nm, 423nm, 433nm
Merck 147,247
BRN 326470
Major Application Display device, sol-gel matrix, photoreceptors, fuel cells, waveguides, paints, detergents, cosmetics, antiperspirant composition, diapers, screening bacteria, detecting viable cells, diagnosis of urogenital ureaplasmosis, treatment of pathogen infections, amyloid-associated diseases, glaucoma, pulmonary hypertension, asthma, chronic obstructive pulmonary disease, erectile dysfunction, Raynaud’s syndrome, heparin overdose, vulvodynia, wound healing, psychoactive drugs, evaluating dental caries activity
InChIKey BELBBZDIHDAJOR-UHFFFAOYSA-N
LogP 3.02
CAS DataBase Reference 143-74-8(CAS DataBase Reference)
EPA Substance Registry System Phenol Red (143-74-8)

Name (content and impurity

content %)

index

result

PH color change domain

1.2 (orange)-3.0 (yellow)

6.5 (brown)-8.0 (purple)

1.2 (orange)-3.0 (yellow)

6.5 (brown)-8.0 (purple)

Maximum absorption wavelength (nm)



λ1 (PH1.2)

503-506

503

λ2 (PH3.0)

430-435

435

λ3 (PH6.5)

430-435

430

λ4 (PH8.0)

557-560

558

Mass Absorption Index (L/cm

g)



α1 (λ1, PH1.2, dry sample)

110-123

112.5

α2 (λ2, PH3.0, dry sample)

60-68

63.2

α3 (λ3, PH6.5, dry sample)

62-72

65.5

α4 (λ4, PH8.0, dry sample)

115-130

115.0

Alkali dissolution test

qualified

qualified

loss on drying

1.0

0.5

Ignition residue (as sulfate)

0.2

0.2

通用固体

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