Methyl Orange CAS: 547-58-0 | MF: C14H14N3NaO3S | MW: 327.33, Part Number I10538, Buy now for reliable and Reproducible results from Tristains indicators at Chemical World.
Methyl orange (C.I. 13025) is the sodium salt of p-dimethylaminoazobenzenesulfonic acid. It is an orange-colored synthetic dye, which changes color depending on the pH of the solution. It develops a red color in acidic solution and yellow color in basic solution.
Methyl orange is a synthetic dye commonly used as an indicator in analytical chemistry. The chemical formula for methyl orange is C14H14N3NaO3S. Methyl orange is soluble in water and alcohol, making it convenient for various analytical applications. It is a versatile dye with numerous applications in analytical chemistry, water testing, and biological research.
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Application :
- Methyl orange is used as a pH indicator in the cell sap.
- It is used as a counterstain to crystal violet in staining pollen tubes, component of a polychrome histological stain, solution indicator and such as in assays of oxalic and malonic acids.
- In biological research and microscopy, methyl orange is sometimes used as a stain for cellular structures or tissues due to its ability to bind with certain molecules, aiding in visualization.
Benefits :
- Exhibits a distinct color change
- Versatile and stable
- Affordable and easy to use
| Alternate Names | Acid Orange 52 |
| Application | Methyl orange is a pH indicator dye for titrations |
| CAS Number | 547-58-0 |
| Molecular Weight | 327.33 |
| Molecular Formula | C14H14N3NaO3S |
| Supplemental Information | This is classified as a Dangerous Good for transport and may be subject to additional shipping charges. |
| Appearance | Powder or crystalline or crystalline powder |
| Physical State | Solid |
| Solubility | Soluble in water (5 mg/ml at 20° C), ethanol (0.3 mg/ml), and pyrimidine (slightly). Insoluble in ether, and alcohol. |
| pH | 6.5 (5 g/l at 20°C) |
| Storage | Store at room temperature |
| Melting Point | >300° C |
| Refractive Index | n20D ~1.61 (Predicted) |
SAFETY INFORMATION
| WGK Germany | 3 |
| RTECS | DB6327000 |
| PubChem CID | 23673835 |
| Merck Index | 14:6105 |
| MDL Number | MFCD00007502 |
| EC Number | 208-925-3 |
| Beilstein Registry | 4732884 |
| SMILES | CN(C)C1=CC=C(C=C1)N=NC2=CC=C(C=C2)S(=O)(=O)[O-].[Na+] |
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