Product Name:	Phenol Red
Synonyms:	4-[3-(4-Hydroxyphenyl)-1,1-dioxobenzo[c]oxathiol-3-yl]phenol;3,3-Bis(4-hydroxyphenyl)-3H-2,1-benzoxathiol 1,1-dioxide;Phenol Red,pure,indicator;Phenol Red,pure,conform to ACS;PHENOL REDRESEARCH GRADE;Phenol red, indicator, ACS;Phenol red, solution 0,02%, ACS;Phenolsulfonphthalein (100 mg)
CAS:	143-74-8
MF:	C19H14O5S
MW:	354.38
EINECS:	205-609-7
Product Categories:	Analytical Chemistry;Indicator (pH);pH Indicators;Stains and Dyes;P;Stains&Dyes, A to;General Stains/Dyes for Stem Cell BiologyStains and Dyes;PReagents and Supplements;Cell Culture;Cell Viability and Proliferation;In Vivo/In Vitro Tracking of Stem CellsStem Cell Biology;Stains, Dyes and Indicators;Stem Cell Biology;Stem Cell Characterization;Sulfonephthalein
Mol File:	143-74-8.mol

Melting point	300 °C
Boiling point	>300°C
density	1.445 Mg m-3
Fp	>300°C
storage temp.	Store at RT.
solubility	1 M NaOH: soluble1mg/mL
form	Solid
pka	7.9(at 25℃)
color	Red
PH Range	6.6(YELLOW)-8.0(RED)
Water Solubility	0.77 g/L
λmax	557nm, 558nm, 360nm, 423nm, 433nm
Merck	14,7247
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
CAS DataBase Reference	143-74-8(CAS DataBase Reference)
EPA Substance Registry System	Phenol, 4,4'-(1,1-dioxido-3H- 2,1-benzoxathiol-3-ylidene) bis-(143-74-8)

Chemical Properties	dark red powder
Definition	ChEBI: 3H-2,1-Benzoxathiole 1,1-dioxide in which both of the hydrogens at position 3 have been substituted by 4-hydroxyphenyl groups. A pH indicator changing colour from yellow below pH 6.8 to bright pink above pH 8.2, it is commonly used as an indicator in cell cultures and in home swimming pool test kits. It is also used in the (now infrequently performed) phenolsulfonphthalein (PSP) test for estimation of overall blood flow through the kidney.
Uses	As indicator in 0.02-0.05% alcohol solution. pH 6.8 yellow, 8.4 red.

Phenol Red

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