Alizarin Red S (pH Indicator) (C.I. No. 58005) / CAS 130-22-3
Alizarin Red S is a sodium alizarine sulphonate dye used as a pH indicator. Molecular formula: C14H7NaO7S.
| CAS No. | 130-22-3 |
|---|---|
| Molecular formula | C14H7NaO7S |
| Molecular weight | 342.3 |
| Shelf life | 5 years |
| Appearance | Red powder |
| Available pack sizes | 25 gm, 100 gm |
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Product Details
Alizarin Red S (C.I. 58005), also known as sodium alizarine sulphonate, is a laboratory dye and pH indicator for analytical and research use.
Product Details
| Supplier article no. | A-00425 |
|---|---|
| CAS No. | 130-22-3 |
| HSN Code | 32041268 |
| Purity | Not specified |
| Grade | Not specified |
| Molecular formula | C14H7NaO7S |
| Molecular weight | 342.3 |
| Shelf life | 5 years |
| Appearance | Red powder |
| Loss on drying at 110�C | Max. 10% |
| Initial boiling point | 287�C |
| Final boiling point | 289�C |
| Solubility in water | Sparingly soluble |
| Absorption maxima in 0.1 N NaOH | 553-559 nm and 592-599 nm |
| Available pack sizes | 25 gm, 100 gm |
Applications
Used as a pH indicator and laboratory dye in analytical and research procedures. Alizarin Red S is also used in some research assays for detecting calcium-rich mineral deposition; suitability depends on the sample and validated protocol.
For laboratory use. Follow the applicable procedure and safety documentation.