GRADE & PURITYAR?Analytical Reagent grade — high-purity chemicals meeting strict assay limits for lab analysis. Use when accuracy matters and trace impurities could skew results.
AR AR for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
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Storage & shipping
Room temperature Ships Normal Check lot-specific COA for exact specifications.
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Quality documents
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
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Literature proof
Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Descripción general
Aplicación
Es un compuesto colorante de resorcinol derivitizado con un máximo de absorción de 432 nm. Se utiliza como indicador de pH.
Specifications
Sinónimos
4-(4-Nitrofenilazo)resorcinol | Violeta azoico
Especificaciones y pureza
AR
Mecanismos bioquímicos y fisiológicos
el 4- (4-nitrobenzazo) resorcinol, también conocido como azo violeta o reactivo magnésico I, es un polvo rojo. Se forma por reacción con Mg (OH) 2 en solución alcalina. Se utiliza principalmente para determinar la existencia de magnesio en la solución. 4
This compound belongs to the class of organic compounds known as azobenzenes. These are organonitrogen aromatic compounds that contain a central azo group, where each nitrogen atom is conjugated to a benzene ring.
External Descriptors
Not available
1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.
Soluble in dilute sodium hydroxide. Insoluble in water.
Sensibilidad
Moisture sensitive.
Punto de fusión (°C)
199-200°C
Peso molecular
259.220 g/mol
XLogP3
2.800
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
6
Rotatable Bond Count
2
Exact Mass
259.059 Da
Monoisotopic Mass
259.059 Da
Topological Polar Surface Area
111.000 Ų
Heavy Atom Count
19
Formal Charge
0
Complexity
336.000
Isotope Atom Count
0
Defined Atom Stereocenter Count
0
Undefined Atom Stereocenter Count
0
Defined Bond Stereocenter Count
0
Undefined Bond Stereocenter Count
0
The total count of all stereochemical bonds
0
Covalently-Bonded Unit Count
1
Calculadoras de soluciones
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Reseñas
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Preguntas frecuentes
What does AR mean?
AR is a defined analytical purity tier suitable for general analytical and reagent applications. It specifies a minimum assay percentage, controlled limits on common impurities (water, heavy metals, residue on ignition), and lot-to-lot consistency. AR is one of several purity tiers — choose based on the sensitivity and regulatory requirements of your method.
How should this product be stored?
Store at room temperature.
How is this product shipped?
This product ships under standard ambient conditions. No temperature-controlled packaging is required.
What are the CAS number, molecular formula and molecular weight?
The CAS Number is 74-39-5, the molecular formula is C12H9N3O4, and the molecular weight is 259.22 g/mol. InChIKey NGPGYVQZGRJHFJ-UHFFFAOYSA-N.
What documentation is provided?
Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.
Need help choosing the grade?
Our grade selection guide covers purity, stabilizer status, and application suitability for all variants in our catalog.
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