1041-00-5

Basic information

• Product Name: Fluorescent Brightener 135
• Synonyms: 1,2-bis(5-methyl-2-benzoxazole)ethylene;2,2'-(1,2-ethenediyl)bis[5-methylbenzoxazole];C.I. 481520;fluorescent brightener 135;2,2'-vinylenebis[5-methylbenzoxazole];Fluorescent Whitener DT;1.2 DI(5-MYTHYL-BENZIAZOLYL)ETHYLENE;Fluorescent brightener 135,2,2'-(1,2-Ethenediyl)bis[5-methylbenzoxazole]
• CAS NO: 1041-00-5
• Molecular Formula: C₁₈H₁₄N₂O₂
• Molecular Weight: 290.32
• EINECS: 213-866-1
• Mol File: 1041-00-5.mol

Chemical Properties

• Melting Point: 180-181°C
• Boiling Point: 471.197 °C at 760 mmHg
• Flash Point: 237.309 °C
• Appearance: /
• Density: 1.287
• PKA: 2.87±0.10(Predicted)
• Water Solubility: 290μg/L at 20℃
• CAS DataBase Reference: Fluorescent Brightener 135(CAS DataBase Reference)
• NIST Chemistry Reference: Fluorescent Brightener 135(1041-00-5)
• EPA Substance Registry System: Fluorescent Brightener 135(1041-00-5)

Safety Data

• Hazardous Substances Data: 1041-00-5(Hazardous Substances Data)

Usage

Flammability and Explosibility

Notclassified

Upstream product

• 110-17-8 (2E)-but-2-enedioic acid 
• 95-84-1 3-amino-4-hydroxytoluene 
• 617-48-1 malic acid 

Relevant articles and documents

Photoactivatable turn-on fluorescence based on the photo-cleavage of the C-Br bond in 1,2-bis(5-(bromoethyl)benzoxazol-2-yl)ethane

This paper describes photoactivatable turn-on fluorescence based on the photo-cleavage of the C-Br bond in 1,2-bis(5-(bromoethyl)benzoxazol-2-yl)ethane (1) in both solution and in a polymeric thin film. It was found that 1 exhibited very weak fluorescence in both solution and in a PMMA thin film, upon irradiation with 365 nm light, a strong fluorescence was detected. The strong fluorescence attributed to the photo-product resulted from the photo-induced cleavage of the C-Br bond in 1. Moreover, it was also found that the photo-cleavage of the C-Br bond in 1 can be performed using a two-photon induced process, and upon irradiation on a 1-PMMA thin film with a 780 nm femtosecond laser, finely resolved fluorescence images are obtained.

Method For Producing Bisbenzoxazoles

The invention relates to a method for producing bisbenzoxazoles that are interconnected by means of a system of conjugated double bonds, according to which o-aminophenols are reacted with dicarboxylic acids, the carboxyl groups of which are interconnected via a double bond or a system of conjugated double bonds, to form an ammonium salt, said ammonium salt being converted in the presence of dehydrogenating catalysts and solvents with a low dielectric loss into benzoxazol by means of microwave radiation.