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Fluorescent Indicators and Probes > pH Sensitive Probes and Indicators > Alphabetical
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Fluorescent Indicators and Probes > pH Sensitive Probes and Indicators > pH Indicators for Sensor Dyes

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643084 (Aldrich)

27725 (Sigma-Aldrich)

55155

Sigma

7-Hydroxycoumarin-3-carboxylic acid

BioChemika, for fluorescence, ≥98.0% (TLC)


Synonym:	Umbelliferone-3-carboxylic acid
CAS Number:	779-27-1
Linear Formula:	C₁₀H₆O₅
Molecular Weight:	206.15
Beilstein Registry Number:	384141
MDL number:	MFCD00017491
PubChem Substance ID:	24879225

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Description

Application	suitable as pH-indicator
Other Notes	Immobilized on a support to give a pH sensor¹

Properties

grade	for fluorescence
product line	BioChemika
assay	≥98.0% (TLC)
fluorescence	λ_ex 386 nm; λ_em 448 nm in 0.1 M Tris pH 9.0
pKa	7.04
mp	261 °C(lit.)
solubility	DMF: soluble
	DMSO: soluble
	alcohols: soluble

Safety

Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36
WGK Germany	3

References

Cited Reference	1. H. Offenbacher et al. Sens. Actuators 9, 73, (1986)
Beilstein	Beil. 18,V,9,87

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