Quinoline Yellow
Quinoline Yellow (CAS 8003-22-3, C18H11NO2) is a synthetic organic compound with a molecular weight of 273.29 g/mol. This spirit-soluble dye, identified by Colour Index Number 47000, is primarily used as an indicator in analytical chemistry and as a stain in biological and histological applications. Its distinct spectral properties, with an absorption maximum at 439 nm, make it valuable for precise colourimetric measurements and differentiating cellular structures.
- IUPAC
- Solvent yellow 33
Analytical Indicator
Quinoline Yellow serves as a useful indicator in various titration methods due to its distinct colour change properties. It is also employed in chromatography as a visual aid and standard.
Biological Staining
This dye is applied in cell biology and histology for staining purposes. Its ability to colour specific cellular components aids in microscopy and the identification of tissue structures.
Redox Indicator
As a redox indicator, Quinoline Yellow can signal changes in the oxidation state of a solution, facilitating the monitoring of redox reactions in laboratory settings.
| Molecular weight | 273.29 |
|---|---|
| Empirical formula | C18H11NO2 |
| Composition | Dye content, 95% |
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 | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 2 |
| 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 | 47000 |
|---|---|
| Description | spirit soluble |
| Absorption | λmax 439 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 Quinoline Yellow used for?
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Quinoline Yellow (CAS 8003-22-3) is primarily used as an analytical indicator, a biological stain in cell biology and histology, and as a redox indicator.
What are the CAS number and formula for Quinoline Yellow?
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The CAS number for Quinoline Yellow is 8003-22-3, and its empirical formula is C18H11NO2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Quinoline Yellow with a dye content of 95%. This product is intended for laboratory and analytical use and is not represented as USP, BP, or EP grade.
What are the primary safety concerns when handling Quinoline Yellow?
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Quinoline Yellow is classified with a GHS07 symbol and 'Warning' signal word, indicating it may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Appropriate personal protective equipment, including eyeshields and gloves, should be used, and good laboratory ventilation is advised.
Is Quinoline Yellow available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including Quinoline Yellow, serving customers worldwide.
How can I request a quote or sample for Quinoline Yellow?
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To request a quote or sample of Quinoline Yellow, please contact our sales team through the website or by phone.
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