Acid Red 66
酸性红66
Also known as: Biebrich scarlet, Biebrich scarlet red, Biebrich scarlet WS, Biebrich scarlet sodium salt, Scarlet Red Sulfonate NF, Ponceau BS, Ponceau 3RB, Ponceau B, Crocein Scarlet, Croceine Scarlet, C.I. 26905, C.I. Acid Red 66, Scarlet B, Scarlet 3B, Wool Scarlet BR, Fast Scarlet BA, Fenazo Scarlet B, Naphthazine Scarlet BI, Imperial Scarlet 3B, Abcol Red 3B Conc
Acid Red 66 (CAS 4196-99-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C22H14N4Na2O7S2 and a molecular weight of 556.479 g/mol. It is also known as Biebrich scarlet, Biebrich scarlet red and Biebrich scarlet WS. Key properties include a melting point of 181-188ºC and a flash point of 300°(572°F). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4196-99-0
- Jingsj CID
- J-8984-9
- Molecular Formula
- C22H14N4Na2O7S2
- Chinese Name
- 酸性红66
- Molecular Weight
- 556.479 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 181-188ºC |
|---|---|
| Flash Point | 300°(572°F) |
Frequently Asked Questions
What is the CAS number of Acid Red 66?
The CAS number of Acid Red 66 is 4196-99-0.
What are the molecular formula and molecular weight of Acid Red 66?
Acid Red 66 has molecular formula C22H14N4Na2O7S2 and molecular weight 556.479 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Acid Red 66 (CAS 4196-99-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8984-9 (accessed 2026-10-23).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.