Fast Blue B Salt
Also known as: Azoic Diazo Component 48, CI 37235, 3,3'-Dimethoxybiphenyl-4,4'-bis(diazonium) dichloride, o-Dianisidine diazotate, Tetrazotized-o-dianisidine chloride, Naphthanil Diazo Blue B, Brentamine Fast Blue B Salt
Fast Blue B Salt (CAS 91-91-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C14H12Cl2N4O2 and a molecular weight of 339.177 g/mol. Key property: a melting point of 300ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 91-91-8
- Jingsj CID
- J-31573-1
- Molecular Formula
- C14H12Cl2N4O2
- Molecular Weight
- 339.177 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 300ºC |
|---|---|
| Exact Mass | 338.033722 |
| PSA | 74.76000 |
| LogP | 4.33996 |
Customs & Trade Information
| HS Code | 2927000090 |
|---|---|
| Summary | 2927000090 other diazo-, azo- or azoxy-compounds。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Fast Blue B Salt?
The CAS number of Fast Blue B Salt is 91-91-8.
What are the molecular formula and molecular weight of Fast Blue B Salt?
Fast Blue B Salt has molecular formula C14H12Cl2N4O2 and molecular weight 339.177 g/mol.
What are the upstream and downstream products of Fast Blue B Salt?
For Fast Blue B Salt, Upstream Products: 3,3'-Dimethoxybenzidine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Fast Blue B Salt (CAS 91-91-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31573-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.