1-(1-Naphthylazo)-2-naphthol
C.I. 颜料红40
Also known as: C.I. 12170, Solvent Red 4, C.I. Solvent Red 4, C.I. Pigment Red 40, Pigment Red 40, Red 2R, Fat Bordeaux, Fat Bordeaux R, Grasal Red, Oil Dark Red, Pigment Bordeaux, Pigment Red RLP, Waxoline Red BN, Naphthylamine Bordeaux, 2-Naphthalenol, 1-(1-naphthalenylazo)-, (1Z)-1-(naphthalen-1-ylhydrazinylidene)naphthalen-2-one, EINECS 220-176-4
1-(1-Naphthylazo)-2-naphthol (CAS 2653-64-7) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C20H14N2O and a molecular weight of 298.33800 g/mol. It is also known as C.I. 12170, Solvent Red 4 and C.I. Solvent Red 4. Key properties include a boiling point of 500.6ºC at 760mmHg, a density of 1.2g/cm3 and a flash point of 256.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 2653-64-7
- Jingsj CID
- J-32482-9
- Molecular Formula
- C20H14N2O
- Chinese Name
- C.I. 颜料红40
- Molecular Weight
- 298.33800 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 500.6ºC at 760mmHg |
|---|---|
| Density | 1.2g/cm3 |
| Flash Point | 256.5ºC |
Frequently Asked Questions
What is the CAS number of 1-(1-Naphthylazo)-2-naphthol?
The CAS number of 1-(1-Naphthylazo)-2-naphthol is 2653-64-7.
What are the molecular formula and molecular weight of 1-(1-Naphthylazo)-2-naphthol?
1-(1-Naphthylazo)-2-naphthol has molecular formula C20H14N2O and molecular weight 298.33800 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-(1-Naphthylazo)-2-naphthol (CAS 2653-64-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32482-9 (accessed 2026-10-23).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.