m-Cresol purple
Also known as: m-Cresolsulfonphthalein, Metacresol Purple, Cresol Purple, m-Cresol purpl, 3-cresol purple, cresolsulfonphthalein, Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[3-methyl-, 2-[(Z)-(4-Hydroxy-2-methylphenyl)(2-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)methyl]benzenesulfonic acid, 2-[(Z)-(4-Hydroxy-2-methylphenyl)(2-methyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]benzenesulfonic acid, 3,3-Bis(4-hydroxy-2-methylphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide, MFCD00005871, EINECS 218-960-6
m-Cresol purple (CAS 2303-01-7) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C21H18O5S and a molecular weight of 382.430 g/mol. Key properties include a melting point of >250°C, a boiling point of 577.5ºC at 760 mmHg and a density of 1.4±0.1 g/cm3. It is listed by 1 supplier; request a quote for pricing. Record last updated Nov 3, 2026.
- CAS No.
- 2303-01-7
- Jingsj CID
- J-1352529-6
- Molecular Formula
- C21H18O5S
- Molecular Weight
- 382.430 g/mol
- Category
- Alcohols
- Last updated
- 11/3/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | - | - | CN China |
Physicochemical Properties
| Melting Point | >250°C |
|---|---|
| Boiling Point | 577.5ºC at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Exact Mass | 382.087494 |
| PSA | 92.21000 |
| LogP | 2.99 |
| Vapor Pressure | 1.19E-13mmHg at 25°C |
| Refractive Index | 1.652 |
| Additional Property | Solubility Very slightly soluble in water, ethanol; soluble in methanol |
Customs & Trade Information
| HS Code | 2934991000 |
|---|---|
| Summary | 2934991000. sultones and sultams. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of m-Cresol purple?
The CAS number of m-Cresol purple is 2303-01-7.
What are the molecular formula and molecular weight of m-Cresol purple?
m-Cresol purple has molecular formula C21H18O5S and molecular weight 382.430 g/mol.
Which suppliers offer m-Cresol purple?
1 supplier(s) listed; request a quote for pricing.
What are the upstream and downstream products of m-Cresol purple?
For m-Cresol purple, Upstream Products: 2-Sulfobenzoic anhydride, m-Cresol, Saccharin; Downstream Products: 4-Hydroxy-2-methylbenzoic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "m-Cresol purple (CAS 2303-01-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1352529-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.