58449-88-0

Basic information

• Product Name: Fluorescentbrighteningagent199
• Synonyms: Fluorescentbrighteningagent199;Fluorescent Brightener ER-2 C.I. 199:1
• CAS NO: 58449-88-0
• Molecular Formula: C24H16N2
• Molecular Weight: 0
• EINECS: 235-834-6
• Mol File: 58449-88-0.mol
• Article Data: 13

Chemical Properties

• Melting Point: 181-186℃
• Boiling Point: 573.5°C at 760 mmHg
• Flash Point: 274.1°C
• Appearance: /
• Density: 1.18g/cm³
• Vapor Pressure: 3.7E-13mmHg at 25°C
• Refractive Index: 1.66
• Water Solubility: insoluble
• CAS DataBase Reference: Fluorescentbrighteningagent199(CAS DataBase Reference)
• NIST Chemistry Reference: Fluorescentbrighteningagent199(58449-88-0)
• EPA Substance Registry System: Fluorescentbrighteningagent199(58449-88-0)

Safety Data

• Hazardous Substances Data: 58449-88-0(Hazardous Substances Data)

Usage

General Description

Fluorescent Brightening Agent 199, also known as "Fluorescent Whitening Agent" or "Optical Brightening Agent" in the chemical industry is broadly used in detergents, papers, textiles, and plastics to create or enhance the appearance of brightness or whiteness. Although its specific chemical composition and structure isn't commonly accessed, most of these agents work by absorbing ultraviolet light then re-emitting it as blue light, resulting in a whitening or brightening effect. While generally considered safe for use, some individuals may experience sensitivity or allergic reactions to these chemical compounds. Additionally, there's an ongoing environmental concern related to their inability to easily biodegrade and potential aquatic toxicity.

InChI:InChI=1/C24H16N2/c25-17-22-13-11-20(12-14-22)6-5-19-7-9-21(10-8-19)15-16-23-3-1-2-4-24(23)18-26/h1-16H/b6-5+,16-15+

Upstream product

• 1552-41-6 diethyl [(4-cyanophenyl)methyl]phosphonate 
• 72436-40-9 4-[(E)-2-(4-Formyl-phenyl)-vinyl]-benzonitrile 
• 623-27-8 terephthalaldehyde, 
• 623-25-6 p-Xylylene dichloride 
• 4546-04-7 tetraethyl 1,4-xylylenediphosphonate 
• 105-07-7 4-cyanobenzaldehyde 
• 3435-51-6 4-ethenylbenzonitrile 
• 624-38-4 para-diiodobenzene 
• 1779-49-3 Methyltriphenylphosphonium bromide 
• 105-06-6 1,4-Divinylbenzene 
• 623-00-7 4-bromobenzenecarbonitrile 
• 106-42-3 para-xylene 
• 73755-13-2 4-[(E)-2-(4-Cyano-phenyl)-vinyl]-benzoyl chloride 
• 623-24-5 1,4-bis(bromomethyl)benzene 

Relevant articles and documents

OPTICAL DATA COMMUNICATION SYSTEM COMPRISING PARA-PHENYLENEVINYLENES AND SPECIFIC PARA-PHENYLENEVINYLENES

An optical data communication system comprising para-phenylenevinylenes, a receiver for an optical data communication system comprising para-phenylenevinylenes, a transmitter for an optical data communication system comprising para-phenylenevinylenes, the use of para- phenylenevinylenes in an optical data communication system, specific para-phenylenevinylenes and their preparation.

Phenylenevinylene oligomers by Mizoroki-Heck cross coupling reaction. Structural and optoelectronic characterization

In order to study the effect of the molecular structure on the optical properties of totally trans-trans phenylenevinylene oligomers (OPVs), sixteen 1,4-distyrylbenzene derivatives (1a-i and 2a-g) functionalized with different electron-donating (ED) and electron-withdrawing (EW) groups were synthesized by the Mizoroki-Heck cross coupling reaction in moderate to good yields (40–95%). The implemented methodology, with a small modification previously reported by our group, allows obtaining the desired vinyl configuration as well as one novel OPV compound (1h). After structural characterization by several techniques (e.g. FTIR, 1H, 13C and Solid-State NMR), particular emphasis was placed upon the investigation of their optical properties by UV–vis and fluorescence spectroscopies. The results showed that, with only one exception, the ED and EW groups at the ends of OPV systems lead to a bathochromic shift. This effect is intensified with the introduction of methoxy groups on the central ring. Consistent with these, the HOMO-LUMO gaps (ΔE) decreases as the strength of ED and EW substituents increases. The ED and EW substituents also lead to a decrease in the Φf values. This contribution in the area of organic electronics can be used as a reference to better select the most appropriate technological application for each OPV and this can be extrapolated to their respective structurally analogous segmented polymer.

Ruthenium-Sulfonamide-Catalyzed Direct Dehydrative Condensation of Benzylic C-H Bonds with Aromatic Aldehydes

The first catalytic dehydrative condensation of the benzylic C-H bonds of toluene and p-xylene with aromatic aldehydes is reported herein. This protocol provides highly atom-economical access to stilbene and p-distyrylbenzene derivatives, whereby water is the sole byproduct. The reaction is based on the deprotonation-functionalization of benzylic C-H bonds through η6-complexation of the arenes, which is realized for the first time using a catalytic amount of a transition metal activator. The key to the success of this method is the use of a sulfonamide anion as a catalyst component, which appears to facilitate not only the deprotonation of the benzylic C-H bonds but also the formation of a C-C bonds via an electrophilic tosylimine intermediate.