4-Phenylazophenol
4-Phenylazophenol (CAS: 1689-82-3), with the molecular formula C<sub>6</sub>H<sub>5</sub>N=NC<sub>6</sub>H<sub>4</sub>OH and a molecular weight of 198.22 g/mol, is a chemical compound primarily used as an adsorption indicator in titrations. It is also recognised for its application as an analytical reagent and in various staining procedures within biological sciences.
- IUPAC
- 4-Hydroxyazobenzene,Solvent Yellow 7
- Synonyms
- 4-HydroxyazobenzeneSolvent Yellow 7
Adsorption Indicator
4-Phenylazophenol serves as an effective adsorption indicator in volumetric analysis. It exhibits distinct colour changes at the endpoint of certain titrations, facilitating accurate determination of analyte concentrations.
Analytical Reagent
This compound is employed as an analytical reagent in various laboratory procedures. Its properties lend themselves to specific chemical detection and quantification methods.
Biological Staining
Within cell biology, hematology, and histology, 4-Phenylazophenol is utilised in staining techniques. It aids in the visualisation of cellular structures and tissues during microscopic examination.
| Molecular weight | 198.22 |
|---|---|
| Linear formula | C6H5N=NC6H4OH |
| Assay | 98% |
| Melting point | 150-152 °C(lit.) |
Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Colour Index Number | 11800 |
|---|---|
| Gene Information | human ... ESR1(2099) |
| Absorption | λmax 347 nm |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 4-Phenylazophenol used for?
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4-Phenylazophenol is primarily used as an adsorption indicator in titrations, an analytical reagent, and in various biological staining procedures for cell biology, hematology, and histology.
What are the CAS number and chemical formula for 4-Phenylazophenol?
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The CAS number for 4-Phenylazophenol is 1689-82-3, and its chemical formula is C<sub>6</sub>H<sub>5</sub>N=NC<sub>6</sub>H<sub>4</sub>OH.
What grade and purity does Tech Serve Solutions supply for 4-Phenylazophenol?
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Tech Serve Solutions supplies 4-Phenylazophenol with an assay of 98%. We do not represent this product as USP, BP, or EP grade.
What are the safety and handling precautions for 4-Phenylazophenol?
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4-Phenylazophenol is a warning substance, causing skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Recommended personal protective equipment includes a dust mask type N95, eyeshields, and gloves. Ensure adequate ventilation.
How is 4-Phenylazophenol packed, shipped, and exported?
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Tech Serve Solutions packs, ships, and exports 4-Phenylazophenol in compliance with all relevant regulations for chemical substances.
How can I request a quote or sample of 4-Phenylazophenol?
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To request a quote or sample of 4-Phenylazophenol, please contact our sales team through the website or via direct inquiry.
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