Metanil Yellow CAS: 587-98-4 | MF: C18H14N3O3S€š¬¢Na | MW: 375.38S10115, Part Number S10115, Buy Histological Stains & Dyes for Histology, Cytology, Microbiology, Hematology & Biology Lab from TriStains at Chemical World.
.Metanil Yellow is a vivid yellow to orange-yellow crystalline powder. It is also referred to as 3-(4-Anilinophenylazo)benzenesulfonic acid sodium salt, Acid Yellow 36, and is classified as a synthetic azo dye with the chemical formula C18H14N3NaO3S. This dye belongs to the azo dye group, which is distinguished by the presence of the azo (-N=N-) functional group. Its chemical composition comprises a benzene ring with a dimethylamino group, a sulfonate group, and an azo group. Metanil Yellow is soluble in water and alcohol, but insoluble in organic solvents. In the field of analytical chemistry, it serves as a pH indicator, undergoing a color transition from red to yellow within the pH range of 1.2 to 3.2.
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Application :
- Metanil yellow has been used for staining of leukocyte granules. It is also used as a counterstain in microscopic sections.
- It is used as a counterstain in PAS (periodic acid-Schiff)/iron-hematoxylin stained sections to increase contrast.
- Metanil Yellow is commonly used as an indicator dye in analytical chemistry and pH testing.
- Metanil Yellow is used as a coloring agent in various industries, such as textiles, paper, plastics, and cosmetics.
Benefits :
- Effective coloring agent for various applications
- Gives accurate results
- Affordable and easy to handle
| Alternate Names | 3-(4-Anilinophenylazo)benzenesulfonic acid sodium salt; Acid Yellow 36 |
| Application | Metanil yellow is a microscopy stain and pH indicator |
| CAS Number | 587-98-4 |
| Molecular Weight | 375.38 |
| Molecular Formula: | C18H14N3O3S•Na |
Metanil yellow is an acid dye. Studies using cross-linked chitosan beads suggest that Metanil yellow has an adsorption capacity of 3.56 mmol g1at pH 4 and 30 C. Alternate studies indicate that photocatalytic degradation of Metanil yellow can be carried out using TiO2as a photocatalyst under UV irradiation. In addition, ion chromatography of Metanil yellow displayed complete mineralization into CO2, N2, H2O and inorganic ions such as NH4+, NO3and SO42-. Furthermore, Metanil yellow is useful in spectrophotometric methods to determine the presence of trace amounts of nitrates and nitrites in solution. The method utilizes the fact that potassium bromate can catalyze the discoloring of Metanil yellow which can then be analyzed by spectrophotometry.
| Appearance | Powder |
| Physical State | Solid |
| Solubility | Soluble in water (25 mg/ml at 20° C), alcohol, benzene (slightly), acetone (very slightly), and ether. |
| Storage | Store at room temperature |
| Refractive Index | n20D ~1.65 (Predicted) |
SAFETY INFORMATION
| WGK Germany | 2 |
| RTECS | DB7329500 |
| PubChem CID | 3935589 |
| Merck Index | 14: 5928 |
| MDL Number | MFCD00007486 |
| EC Number | 209-608-2 |
| Beilstein Registry | 3831568 |
| SMILES | C1=CC=C(C=C1)NC2=CC=C(C=C2)N=NC3=CC(=CC=C3)S(=O)(=O)[O-].[Na+] |
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