Phenol Red sodium salt

SIAL/P4758 - pH indicator dye

Synonym: Phenolsulfonephthalein sodium salt

CAS Number: 34487-61-1
Empirical Formula (Hill Notation): C₁₉H₁₃NaO₅S
Molecular Weight: 376.36
EC Number: 252-057-8
MDL Number: MFCD00066901
Linear Formula: C₁₉H₁₃NaO₅S
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-P4758-5G	5 g	$36.10 1/EA	Add To Favorites
45-P4758-25G	25 g	$99.70 1/EA	Add To Favorites
45-P4758-50G	50 g	$163.00 1/EA	Add To Favorites

This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: P4758-50G

Properties
Descriptions
Safety Info.
Basic Data

ε_max	31.62 at 423 nm in 0.1 M phosphate buffer
application(s)	diagnostic assay manufacturing hematology histology
color	red to brown
form	powder
InChI	1S/C19H14O5S.Na/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;/q;+1/p-1
InChI key	HKHYOKBQJILTEI-UHFFFAOYSA-M
mp	285 °C (dec.) (lit.)
Quality Level	200
SMILES string	[Na+].Oc1ccc(cc1)C2(OS(=O)(=O)c3ccccc23)c4ccc([O-])cc4
solubility	water: 1 mg/mL, opaque, dark red
storage temp.	room temp
technique(s)	titration: suitable
visual transition interval	6.8-8.2, yellow to red

Application:	Phenol Red sodium salt has been used as an indicator during single-guide RNA microinjection into one-cell stage zebrafish embryos.
Application:	Suitable for use as a pH indicator.
General description:	Phenol Red sodium salt is widely used as a pH indicator. At a pH of 6.4 and below, phenol red solution will have a yellow color. At a pH of 8.2 and above, it will have a red color. It is commonly used in culture media to detect neutral to acidic pH changes.
Packaging:	5, 25, 50 g in glass bottle

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable

mp	285 °C (dec.) (lit.)
Storage Temp.	room temp
UNSPSC	12171500

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