Description
4-(Phenylazo)diphenylamine is an azo-aromatic amine supplied at min. 97 % purity in p.a. quality for analytical and indicator applications. It is characterised by CAS number 101-75-7, empirical formula C₁₈H₁₅N₃, molar mass 273,34 g/mol and EG number 202-972-3. Its structure as a phenylazo-substituted diphenylamine supports use among pH-indicator and dye-related analytical methods where a defined organic indicator is required. The p.a. grade and stated minimum purity assist laboratories that need reproducible performance in qualitative and quantitative protocols. This material is available from manufacturer Carl ROTH in a compact glass pack that suits bench-scale preparation and controlled inventory. Clear CAS, formula and molar-mass data simplify registration in laboratory information systems, safety documentation and method descriptions for research and routine analytical environments.
This article is part of Analytical grade solvents (p.a.), in Solvents.
Key features
- Appearance: orange to orange-brown powder
- Assay: ≥97,0 %
- Absorption max. (in EtOH): ~411 nm
- pH-transition range: 1,2 (red)-2,5 (yellow)
- CAS number: 101-75-7
- Pack sizes: 5 g, 25 g
- EG nr.: 202-972-3
- Purity: min. 97 %
- Molar mass: 273,34 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
WarningHazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
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Questions about 4-(Phenylazo) diphenylamine, min. 97 %, p.a., 5 g, glass
What is this article?
4-(Phenylazo) diphenylamine, min. 97 %, p.a., 5 g, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Analytical grade solvents (p.a.), inside Solvents, in Lab chemicals.
An analytical-grade solvent, often marked p.a., has impurity limits tight enough for classical analysis and for preparing reagents. It is not automatically low enough in UV absorbance for HPLC, and it is not dry enough for a water-sensitive reaction. The grade is the purchase.
A solvent dissolves. The grade says which impurities are low enough for the method. Analytical grade is the ordinary pure solvent. HPLC and LC-MS grades limit the absorbance and the ions that would become peaks or background. A dry solvent has had water removed. A deuterated solvent is for NMR, where the hydrogen signal would otherwise drown the sample. Technical grade is for cleaning and for synthesis that does not need a chromatogram. Identity is on PubChem. Names follow IUPAC. Hazards follow ECHA, the CLP Regulation and REACH.
Which category should I open next?
The category is Solvents. The sub-category is Analytical grade solvents (p.a.). The catalogue is Lab chemicals.
Shelves beside this one are HPLC & LC-MS grade solvents, Dry & deuterated solvents (NMR, synthesis), Technical & synthesis grade solvents and Green & alternative solvents.
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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