Fluorescent brightener 121
荧光增白剂121
Also known as: 4-[3-(4-Chlorophenyl)-4,5-dihydro-1H-pyrazol-1-yl]benzenesulfonamide, 3-(4-Chlorophenyl)-1-(4-sulfamoylphenyl)-2-pyrazoline, Belofor SNPA, Blankophor Man 01, C.I. Fluorescent brightener 121, C.I. 50510, Benzenesulfonamide, 4-[3-(4-chlorophenyl)-4,5-dihydro-1H-pyrazol-1-yl]-
Fluorescent brightener 121 (CAS 12224-11-2) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C15H14ClN3O2S and a molecular weight of 335.80900 g/mol. It is also known as 4-[3-(4-Chlorophenyl)-4,5-dihydro-1H-pyrazol-1-yl]benzenesulfonamide, 3-(4-Chlorophenyl)-1-(4-sulfamoylphenyl)-2-pyrazoline and Belofor SNPA. Key properties include a boiling point of 535.2ºC at 760 mmHg, a density of 1.45 g/cm3 and a flash point of 277.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 12224-11-2
- Jingsj CID
- J-1339940-9
- Molecular Formula
- C15H14ClN3O2S
- Chinese Name
- 荧光增白剂121
- Molecular Weight
- 335.80900 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 535.2ºC at 760 mmHg |
|---|---|
| Density | 1.45 g/cm3 |
| Flash Point | 277.5ºC |
Frequently Asked Questions
What is the CAS number of Fluorescent brightener 121?
The CAS number of Fluorescent brightener 121 is 12224-11-2.
What are the molecular formula and molecular weight of Fluorescent brightener 121?
Fluorescent brightener 121 has molecular formula C15H14ClN3O2S and molecular weight 335.80900 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Fluorescent brightener 121 (CAS 12224-11-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1339940-9 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.