Fluorescent Brightener 185
荧光增白剂EBF
Also known as: 2,5-Bis(2-benzoxazolyl)thiophene, 2,2'-(2,5-Thiophenediyl)bis(benzoxazole), C.I. Fluorescent Brightener 185, Optical brightener EBF
Fluorescent Brightener 185 (CAS 2866-43-5) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C18H10N2O2S and a molecular weight of 318.34900 g/mol. It is also known as 2,5-Bis(2-benzoxazolyl)thiophene, 2,2'-(2,5-Thiophenediyl)bis(benzoxazole) and C.I. Fluorescent Brightener 185. Key properties include a melting point of 216-220ºC, a boiling point of 466.4ºC at 760 mmHg, a density of 1.385 and a flash point of 235.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 2866-43-5
- Jingsj CID
- J-988246-7
- Molecular Formula
- C18H10N2O2S
- Chinese Name
- 荧光增白剂EBF
- Molecular Weight
- 318.34900 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 216-220ºC |
|---|---|
| Boiling Point | 466.4ºC at 760 mmHg |
| Density | 1.385 |
| Flash Point | 235.9ºC |
Frequently Asked Questions
What is the CAS number of Fluorescent Brightener 185?
The CAS number of Fluorescent Brightener 185 is 2866-43-5.
What are the molecular formula and molecular weight of Fluorescent Brightener 185?
Fluorescent Brightener 185 has molecular formula C18H10N2O2S and molecular weight 318.34900 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 185 (CAS 2866-43-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-988246-7 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.