4-(2-Pyridylazo)resorcinol monosodium salt hydrate
4-(2-Pyridylazo)resorcinol monosodium salt hydrate (CAS: 16593-81-0) is a complexometric indicator and colorimetric reagent with the empirical formula C11H8N3NaO2 · xH2O. Its anhydrous molar mass is 237.19 g/mol. This compound exhibits a distinct absorption maximum at 411 nm, making it valuable in analytical chemistry for metal ion detection and quantification. It is primarily used in laboratory settings for staining and analytical procedures.
- IUPAC
- PAR monosodium salt hydrate
Colorimetric Reagent
Utilised in spectrophotometry to form coloured complexes with various metal ions, enabling their quantitative determination. Its distinct colour change allows for precise endpoint detection in titrations.
Complexometric Indicator
Serves as an effective indicator in complexometric titrations, particularly for the determination of metal ions such as zinc and copper. It facilitates accurate endpoint detection through a visual colour shift.
Histology and Hematology
Applied as a stain in histological and hematological preparations. It aids in differential staining, enhancing the visualisation of cellular structures and components for microscopic examination.
Cell Biology Research
Employed in cell biology for specific staining techniques, contributing to the study of cellular processes and morphology. Its chromogenic properties are leveraged for diagnostic and research purposes.
| Molecular weight | 237.19 (anhydrous basis) |
|---|---|
| Empirical formula | C11H8N3NaO2 · xH2O |
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.
| Absorption | λmax 411 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-(2-Pyridylazo)resorcinol monosodium salt hydrate used for?
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4-(2-Pyridylazo)resorcinol monosodium salt hydrate (CAS: 16593-81-0) is primarily used as a colorimetric reagent and complexometric indicator in analytical chemistry. It is also applied as a stain in histology, hematology, and cell biology research for visualisation purposes.
What are the CAS number and formula for this product?
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The CAS number is 16593-81-0 and the empirical formula is C11H8N3NaO2 · xH2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product as a hydrate. The specific assay and grade are detailed in the product specifications. We do not represent this product as meeting USP, BP, or EP pharmacopoeia standards.
How should this chemical be handled safely?
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This compound is classified as a warning substance. Handle with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves. Avoid inhalation of dust and contact with skin and eyes. Ensure adequate ventilation as it may cause respiratory irritation (H335).
Is this product available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, pharmaceutical intermediates, and laboratory reagents, including 4-(2-Pyridylazo)resorcinol monosodium salt hydrate.
How can I request a sample or quote?
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To request a sample or a quote for 4-(2-Pyridylazo)resorcinol monosodium salt hydrate, please contact our sales team through the website or via the provided contact details.
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