Fluorescent Brightener 184

Base Information

• Chemical Name: Fluorescent Brightener 184
• CAS No.: 12224-40-7
• Molecular Formula: C20H14N2O3
• Molecular Weight: 430.56200
• Hs Code.: 3204200000
• Mol file: 12224-40-7.mol

Synonyms:C.I. 184;Fluorescent Brightener OB-4;

Chemical Property of Fluorescent Brightener 184

Chemical Property:

• Appearance/Colour: Amber transparent liquid
• Vapor Pressure: 7.83E-11mmHg at 25°C
• Melting Point: 196-202℃
• Refractive Index: 1.617
• Boiling Point: 531.2oC at 760 mmHg
• Flash Point: 275.1oC
• PSA: 80.30000
• Density: 1.185 g/cm3
• LogP: 7.95950

Purity/Quality:

99% ^*data from raw suppliers

Safty Information:

• Safety Statements: S24/25:

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of Fluorescent Brightener 184

There total 6 articles about Fluorescent Brightener 184 which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 98.7%

Thiophene-2,5-dicarboxylic acid (4282-31-9) + 2-amino-4-tert-butylphenol (1199-46-8) → Uvitex OB (7128-64-5,12224-40-7)

Guidance literature:

With boric acid; In toluene; at 170 - 240 ℃; Solvent; Temperature; Inert atmosphere;

Reference yield: 75.0%

2,5-thiophenedicarboxaldehyde (932-95-6) + 4-tert-Butylcatechol (98-29-3) → Uvitex OB (7128-64-5,12224-40-7)

Guidance literature:

With sodium periodate; ammonium acetate; In ethyl acetate; at 100 ℃; for 8h; Schlenk technique; Inert atmosphere;

DOI:10.1002/adsc.202100249

Reference yield:

Thiophene-2,5-dicarboxylic acid bis-[(5-tert-butyl-2-hydroxy-phenyl)-amide] → Uvitex OB (7128-64-5,12224-40-7)

Guidance literature:

at 200 ℃; for 3h; Yield given;

DOI:10.1002/hlca.19800630212

upstream raw materials:

thiophene-2,5-dicarbonyl dichloride

Thiophene-2,5-dicarboxylic acid

2-amino-4-tert-butylphenol

2,5-thiophenedicarboxaldehyde

Refernces

• 1、 Dong, Jianyu,Geng, Furong,Su, Lebin,Wu, Shaofeng,Yin, Shuang-Feng,Zhou, Dan,Zhou, Yongbo. "Metal-Free Oxidative Condensation of Catechols, Aldehydes and NH4OAc towards Benzoxazoles". supporting information. p. 3607 - 3614. Retrieved 2021/07/28.
• 2、 -. "Process for the preparation of bis-benzazolyl compounds". Page/Page column 3. . Retrieved 2008/06/13.