323209

4-(2-Pyridylazo)resorcinol

96%

• Synonym(s): PAR
• Empirical Formula (Hill Notation): C₁₁H₉N₃O₂
• CAS Number: 1141-59-9
• Molecular Weight: 215.21
• Beilstein: 184665
• EC Number: 214-528-6
• MDL number: MFCD00006256
• UNSPSC Code: 12171500
• PubChem Substance ID: 24859228
• NACRES: NA.47

Properties

• Quality Level: 200
• Assay: 96%
• form: powder
• composition: Carbon: 58.6-64.2%; ; Nitrogen: 18.6-20.4%
• technique(s): titration: suitable
• color: brown-red
• mp: 192-202 °C (lit.)
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: room temp
• SMILES string: Oc1ccc(\N=N\c2ccccn2)c(O)c1
• InChI: 1S/C11H9N3O2/c15-8-4-5-9(10(16)7-8)13-14-11-3-1-2-6-12-11/h1-7,15-16H/b14-13+
• InChI key: RJNYNDHYSJRRDW-BUHFOSPRSA-N

Description

General description

4-(2-Pyridylazo)resorcinol (PAR) is a monosodium salt(1), dibasic acid that forms the protonated complexes with most metal ions.

Application

4-(2-Pyridylazo)resorcinol (PAR) serves as a metallochromic indicator and is suitable as a chromogenic agent for the quantitative determination of over 50 elements.

Safety Information

• 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