Azure C
天青C
Also known as: 3-Amino-7-(methylamino)phenothiazin-5-ium chloride, Monomethylthionine, Methylene Azure C, C.I. 52002, N-Methylthionine, Azure C, biological stain, AZURE C MACNEAL
Azure C (CAS 531-57-7) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C13H12ClN3S and a molecular weight of 277.77 g/mol. It is also known as 3-Amino-7-(methylamino)phenothiazin-5-ium chloride, Monomethylthionine and Methylene Azure C. Key properties include a boiling point of 385.1ºC at 760 mmHg and a flash point of 186.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 531-57-7
- Jingsj CID
- J-1990778-1
- Molecular Formula
- C13H12ClN3S
- Chinese Name
- 天青C
- Molecular Weight
- 277.77 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 385.1ºC at 760 mmHg |
|---|---|
| Flash Point | 186.7ºC |
Frequently Asked Questions
What is the CAS number of Azure C?
The CAS number of Azure C is 531-57-7.
What are the molecular formula and molecular weight of Azure C?
Azure C has molecular formula C13H12ClN3S and molecular weight 277.77 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Azure C (CAS 531-57-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1990778-1 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.