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Phenol Red CAS 143-74-8

Phenol red, also known as phenol red, is a deep red crystalline powder, molecular weight is 354.38, CAS No. 143-74-8, soluble in water, alcohol, acetone, almost insoluble in ether and chloroform. It is soluble in alkali hydroxide or carbonate alkali solution is deep red, stable in air, can be used for microbial culture in the identification medium; acid-base indicator; blood carbon dioxide determination; bacterial serum test in the preparation of disaccharide iron urea medium indicator and so on.


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Model:
143-74-8
Brand:
bosschemical
Code:
143-74-8

Product Description

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