Degradation of a stilbene-type fluorescent whitening agent with hypochlorite: Identification of the degradation products by capillary electrophoresis

2001 ◽  
Vol 20 (10) ◽  
pp. 2193-2197 ◽  
Author(s):  
Marcelo Blanco ◽  
Lidia Jiménez ◽  
Ismael Valverde
Keyword(s):  
Capillary Electrophoresis ◽  
Degradation Products ◽  
Fluorescent Whitening Agent ◽  
Whitening Agent

Analysis of degradation products of chemical warfare agents using capillary electrophoresis

The Analyst ◽  
2011 ◽  
Vol 136 (20) ◽  
pp. 4103 ◽  
Author(s):  
Svetlana S. Aleksenko ◽  
Pierre Gareil ◽  
Andrei R. Timerbaev
Keyword(s):  
Capillary Electrophoresis ◽  
Degradation Products ◽  
Chemical Warfare Agents ◽  
Chemical Warfare ◽  
Warfare Agents

The Effect of Fluorescent Whitening Agent on the Coated Ink-Jet Printing Paper

2011 ◽  
Vol 183-185 ◽  
pp. 1692-1695
Author(s):  
Wen Hua Gao ◽  
Ke Fu Chen ◽  
Ren Dang Yang ◽  
Fei Yang ◽  
Xiao Bin Chen
Keyword(s):  
Great Influence ◽  
Chromatic Aberration ◽  
Coated Paper ◽  
Fluorescent Whitening Agent ◽  
Ink Jet Printing ◽  
Whitening Agent ◽  
Ink Jet ◽  
Color Density ◽  
Jet Printing ◽  
Printing Paper

Fluorescent whitening agent is relatively small dosage in the coating, but it has great influence on the properties of the coating and ink-jet printing qualities. With the increase of fluorescent whitening agent dosage, the PH of the coating rose but the viscosity was hardly to change. The brightness of coated ink-jet printing paper and color density of the printing image firstly presented the trend of increasing then decreasing. What’s more, when the brightness of the coated paper achieved to the maximum, color density and contact angle properties were the largest. Chromatic aberration property of the image reduced from 1.87 to 1.75, when the addition of fluorescent whitening agent rose from 0.1% to 0.5%. While the dosage was rose to 0.9%, chromatic aberration increased to 2.15. The gloss of coated paper decreased with the dosage of fluorescent whitening agent increasing. In sum, fluorescent whitening agent can enhance the brightness of the coated paper as well as the printing properties. The results show that the best brightness and printing qualities of coated ink-jet printing paper are obtained, when the fluorescent whitening agent is 0.5%( relative to pigment).

Photochemical studies of a sulphonated derivative of 1,3-Diphenyl-2-pyrazoline

1975 ◽  
Vol 28 (9) ◽  
pp. 2083 ◽  
Author(s):  
IH Leaver ◽  
GC Ramsay ◽  
LJ Stephens
Keyword(s):  
Aqueous Solution ◽  
Vinyl Alcohol ◽  
Wool Fibre ◽  
Poly Vinyl Alcohol ◽  
Simulated Sunlight ◽  
Fluorescent Whitening Agent ◽  
Whitening Agent

The photochemistry of the sulphonated pyrazoline fluorescent whitening agent sodium 4-(3?-phenyl-2?-pyrazolin-1?-yl)benzenesulphonate has been examined in aqueous solution, in films of poly(vinyl alcohol) and in the wool fibre. Photooxidation to give the pyrazole occurs almost quantitatively in solution, but accounts for only half of the photoproducts formed in the polymer. In the wool fibre, pyrazole formation accounts for more than half of the pyrazoline whitener destroyed during exposure to simulated sunlight.

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