TAR [=4-(2-Thiazolylazo)resorcinol] TCI A5002

Chemical Identity

Other names: TAR
CAS No.: 2246-46-0
PubChem: CID 75253·SID 87563096
Formula: C9H7N3O2S
Molecular weight: 221.24 g/mol
Purity: >99.0%(HPLC)(T)

Full identifiers (IUPAC, SMILES, InChIKey)

IUPAC: 4-(1,3-thiazol-2-yldiazenyl)benzene-1,3-diol
SMILES: C1=CC(=C(C=C1O)O)N=NC2=NC=CS2
InChIKey: SHNIKUXMZFPPCS-UHFFFAOYSA-N

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TAR, or 4-(2-Thiazolylazo)resorcinol, is a chemical compound widely used in analytical chemistry, particularly in spectroscopy applications. It serves as a reagent in qualitative and quantitative analysis of various metal ions, especially in complexometric and spectrophotometric techniques. In the laboratory, TAR functions as an indicator or reagent that helps detect the presence of specific ions through color changes or chemical reactions. Its role is critical in ensuring accurate and reliable results in analytical procedures.

The properties that make TAR a preferred choice include its ability to form stable complexes with metal ions such as copper, silver, and zinc. This characteristic allows for high sensitivity in analytical processes, making TAR an essential tool for precise detection. Additionally, TAR exhibits good stability under certain conditions, enabling repeated use in various experiments. Its reliability and consistency contribute to its popularity among researchers and laboratory professionals.

In Indonesian laboratories, TAR is commonly used in scientific research conducted at universities and research institutions. It is frequently found in chemistry practical sessions, environmental analysis, and qualitative studies. Its availability and effectiveness make it a top choice for meeting the demands of chemical analysis in both academic and industrial settings.

TCI brochures (PDF)

Titration Reagents and TLC Stains 2026-05-07 · p. 10

Related TCI products

Metal ion analysis in environmental and industrial samples due to its ability to form complexes with copper, silver, and zinc.
Spectrophotometric and complexometric techniques for accurate detection of trace metal ions in solution.
Qualitative analysis in educational settings to demonstrate chemical reactions and ion detection methods.
Research applications in analytical chemistry for studying metal ion interactions and complex formation.
Laboratory testing for quality control in chemical and pharmaceutical industries requiring precise analytical methods.

Brand	TCI
CAS number	2246-46-0
Molecular formula	—
Purity	—
Category	Analytical Chemistry > Analytical Reagents > Spectroscopy Reagents
Pack sizes	Available in standard laboratory quantities
Physical form	Solid powder
Storage	Store in a cool, dry place away from light

TAR should be stored in a cool, dry place, away from direct light to maintain its stability and effectiveness. It is recommended to use airtight containers to prevent moisture absorption and contamination. Laboratory personnel should handle TAR with care, using appropriate personal protective equipment such as gloves and safety goggles. Since TAR is a chemical reagent, it should be kept out of reach of children and not exposed to incompatible substances. Regular inspection of storage conditions is advised to ensure the material remains in optimal condition for use. Proper labeling of containers is essential to prevent accidental misuse or exposure.

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