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Sigma-Aldrich

4-(2-Thiazolylazo)resorcinol

97%

Synonym(s):

2-(2,4-Dihydroxyphenylazo)thiazole, TAR

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About This Item

Empirical Formula (Hill Notation):
C9H7N3O2S
CAS Number:
2246-46-0
Molecular Weight:
221.24
Beilstein:
204257
EC Number:
218-836-1
MDL number:
MFCD00005322
UNSPSC Code:
12171500
PubChem Substance ID:
24847777

Assay

97%

mp

211 °C (dec.) (lit.)

SMILES string

Oc1ccc(\N=N\c2nccs2)c(O)c1

InChI

1S/C9H7N3O2S/c13-6-1-2-7(8(14)5-6)11-12-9-10-3-4-15-9/h1-5,13-14H/b12-11+

InChI key

SHNIKUXMZFPPCS-VAWYXSNFSA-N

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Application

Useful for the spectrophotometric determination of trace metals.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

Precautionary Statements

P261 - P305 + P351 + P338

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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L Evans et al.
Journal of chromatography. A, 911(1), 127-133 (2001-03-28)
A capillary electrophoresis method utilizing 4-(2-thiazolylazo)resorcinol (TAR) was developed to separate uranium, cobalt, cadmium, nickel, titanium and copper metal ions. TAR was chosen as the visible absorbing chelating ligand because of its ability to form stable complexes with a wide
Y Kalyan et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 74(5), 1235-1241 (2009-11-03)
A membrane optode was developed utilizing the 8-hydroxyquinaldine (HQ) facilitated preconcentration of UO(2)(2+) ions and subsequent colored complex formation of UO(2)(2+) with 4-(2-thiazolylazo)-resorcinol (TAR) in optode matrix. The composition of the membrane optode was optimized by scanning several extractants immobilized
Yue-Feng Zhou et al.
The Analyst, 136(2), 282-284 (2010-11-11)
A simple cyclopalladated complex of 4-(2-thiazolylazo)resorcinol showed a specific red-to-green colour change upon addition of organotin species in the acetonitrile-water medium.
Ali Benvidi et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 78(5), 1380-1385 (2011-03-01)
The acidity constants of 4-(2-thiazolylazo)-resorcinol (TAR) were determined by the principal component-wavelet neural network (WNN). Biprotic acid mass balance equations, the distribution functions and the corresponding spectral profiles which were generated by a Gaussian model, have been considered to simulate
S R Bergmann et al.
Clinica chimica acta; international journal of clinical chemistry, 104(1), 53-63 (1980-05-21)
A simple and rapid colorimetric assay for non-esterified fatty acids (NEFA) was developed employing extraction of samples with 0.1 mol/l glycine (pH 2.7) and methoxyethanol : butyl ether, and formation of a copper-fatty acid soap detected with 4-(2-thiazolylazo)-resorcinol. The method
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