m-Cresol purple
Buy m-Cresol purple (CAS 2303-01-7) from Zemixal. Request a quote with price, lead time and documents. Packs from 1 g. Catalogue no. ZX-000384.
About m-Cresol purple
m-Cresol purple is part of the Zemixal indicators, Chelating Agents & Test Papers range. Key data: CAS 2303-01-7, formula C21H18O5S and molar mass 382.4 g/mol. Typical appearance is dark red to dark green powder.
Typical applications
- Titration end-point detection
- pH determination
- Analytical testing
Handling and storage
Physical constants on file: melting point 250-300 °C. Handle with the usual laboratory precautions and consult the SDS supplied with each lot.
Available as 1 g, 5 g, 25 g, 100 g and 5 x 1 kg. Larger or split packs can be arranged. Each lot travels with a batch certificate of analysis and a 16-section SDS. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.
Typical uses
- Titration end-point detection
- pH determination
- Analytical testing
Applications
Specifications and identifiers
| Product name | m-Cresol purple |
|---|---|
| Catalogue number | ZX-000384 |
| CAS number | 2303-01-7 |
| IUPAC name | 4-[3-(4-hydroxy-2-methylphenyl)-1,1-dioxo-2,1lambda6-benzoxathiol-3-yl]-3-methylphenol |
| Molecular formula | C21H18O5S |
| Molar mass | 382.4 g/mol |
| Exact mass | 382.0875 |
| Physical form | Powder |
| Appearance | Dark red to dark green powder |
| Melting point | 250-300 °C |
| XLogP3 | 3.7 |
| H-bond donors / acceptors | 2 / 5 |
| Topological polar surface area | 92.2 Ų |
| HS code | 29349900 |
| InChIKey | OLQIKGSZDTXODA-UHFFFAOYSA-N |
| SMILES | CC1=C(C=CC(=C1)O)C2(C3=CC=CC=C3S(=O)(=O)O2)C4=C(C=C(C=C4)O)C |
| PubChem CID | 73030 |
| Synonyms | m-Cresolsulfonphthalein, Cresol purple, 3-Cresol purple, Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[3-methyl-, Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis(3-methyl-, 3,3-Bis(4-hydroxy-2-methylphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide, m-Cresolsulfonephthalein, Metacresol Purple, meta-Cresol purple, m-Cresol Purple (Technical Grade), m-Cresol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)di-, S,S-dioxide, 3,3-Bis(4-hydroxy-2-methylphenyl)-2,1lambda~6~-benzoxathiole-1,1(3H)-dione |
Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.
Safety and GHS hazards
No GHS classification is on file for this item. Handle it as an unknown laboratory chemical and request the SDS with your quotation.
Pack sizes
| 1 g | Quoted on request | |
| 5 g | Quoted on request | |
| 25 g | Quoted on request | |
| 100 g | Quoted on request | |
| 5 x 1 kg | Quoted on request |
Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.
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