2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole]

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Names and Identifiers

Name	2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole]
Synonyms	2,2'-(VINYLENEDI-P-PHENYLENE)BIS[5-TERT-BUTYLBENZOXAZOLE] 2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] (E)-1,2-bis(4-(5-(tert-butyl)benzo[d]oxazol-2-yl)phenyl)ethene Benzoxazole, 2,2'-(1,2-ethenediyldi-4,1-phenylene)bis[5-(1,1-dimethylethyl)-
CAS	2397-01-5
EINECS	219-261-9

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Physico-chemical Properties

Molecular Formula	C36H34N2O2
Molar Mass	526.67
Density	1.152±0.06 g/cm3(Predicted)
Melting Point	245-250°C
Boling Point	627.6±44.0 °C(Predicted)
pKa	3.21±0.10(Predicted)

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Fluorescent whitening agent

from hownet

Author:

V.Shanbhag, Zhang ban

Abstract:

There are a large number of white objects in life, such as paper, aluminum foil, painted white walls and ceiling, milk, barium sulfate precipitation, chalk, magnesium hydroxide, chemically bleached cotton waist and Sari, after the wash blue (dark blue paint) finishing ordinary white clothing, brilliant white or extra white clothing, etc. Although these are all called white objects, their whiteness varies. Some of them appear white and slightly yellow, the other

Key words:

fluorescent whitening agent; barium sulfate precipitation; Magnesium hydroxide; Chemical bleaching; Ceiling; Objects; Clothing; Paint

DOI:

10.3969/j.issn.1007-6867.2009.01.020

cited:

year:

2009

Last Update：2023-08-16 22:05:47

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Determination of fluorescent whitening agents in plastic products of food contact materials by high performance liquid chromatography with fluorescence detection

Author:

jiao Yanna , Dinley , to be kind , li hui , Wang Libing

Abstract:

A high performance liquid chromatography-fluorescence detection method was developed for the simultaneous determination of fluorescent whitening agents in plastic food contact materials (food packaging bags). The samples were extracted with 20ml chloroform as extraction agent, ultrasonic extraction for 30min, extraction temperature was 40 ℃, and quantitative analysis was performed by high performance liquid chromatography. Using Eclipse XDB-C18(250mm × 4.6, 5 μ) as analytical column, 5mmol/L ammonium acetate solution and acetonitrile as mobile phase, gradient elution, fluorescence excitation wavelength of 350nm, the emission wavelength was 430nm. The results showed that 4 kinds of fluorescent brighteners 4,4 '-BIS [2-(o-cyanophenyl) vinyl] benzene (1,4-bis(4-cyamostyryl)benzene,C. 1.199),1,4-bis (2-benzoxazole) naphthalene (1,4-bis (2-benzoxx axolyi) naphthalene,C. 1.367),4,4' bis(2-methoxystyryl)biphenyl (4,4 '-bis(2-methoxystyryl)biphenyl,C.I.378) and 2, 5-bis (5-tert-butyl-2-benzoxazolyl) thiophene (2,5-thiofenediyl bis(5-tert-butyl-1,3-benzoxazole),C. The detection limit (S/N = 3) was 0.3,0.1,0.05,0.14mg/L, respectively. 1.0,0.4,0.2,0.5mg/L, respectively, the recovery range is 78.9%-101.1%, the relative standard deviation is less than 10%, good linear relationship. The method is simple, accurate and sensitive, and can meet the daily detection of fluorescent whitening agents in food packaging materials and plastic products for import and export.

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Key words:

high performance liquid chromatography fluorescence detection fluorescent brightener food contact materials plastics

DOI:

10.3724/SP.J.1123.2012.08050

cited:

122

year:

2013

Last Update：2023-08-16 22:05:47

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Separation and determination of four fluorescent whitening agents in washing products by solid phase extraction-ultra performance liquid chromatography

Author:

Yanping , Guo xindao , Luo Haiying , Wu Jade , Chen Yiguang , Roewe , Wu Wenhai

Abstract:

A solid phase extraction purification combined with ultra performance liquid chromatography-diode array detector (UPLC-DAD) was established for the simultaneous detection of fluorescent whitening agents 351,85, methods of analysis for 28 and 71. The sample was extracted by 2%(volume fraction) formic acid aqueous solution-methanol, purified by WAX solid phase extraction column, and then used the phenenex synergy Max-RP column (150 × 2.0), with acetonitrile -10 mmol/L ammonium acetate as mobile phase to achieve a good separation of analytes (including cis and trans isomers), with diode array detector, quantification by standard curve. The results showed that there was a good linear relationship in the range of 0.05~180 mg/L, and the correlation coefficients were all greater than 0.999 3. The recovery rate was 1.5 ~ 84.9% with the relative standard deviation (RSD,n = 6) when the spiked level was 5~1 500 mg/kg and 105% ~ 15 mg/kg, respectively. 3.2% to 6.1%. Fifteen samples were analyzed with this method, and the positive rate was 53.3%. The method has the advantages of simple pretreatment, high recovery rate and good precision, and is suitable for the determination of four fluorescent whitening agents in washing products.

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Key words:

solid phase extraction; ultra performance liquid chromatography-diode array detector; Fluorescent whitening agent; Washing products

DOI:

10.3724/SP.J.1123.2012.09041

cited:

103

year:

2013

Last Update：2023-08-16 22:05:47

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Fluorescent whitening agent and its application and development

from VIP Journal Professional Edition

Author:

Tian Fang , Cao Chengbo , Main ups and downs , Zhang Changqiao

Abstract:

fluorescent whitening agent (FWA) was found in the 20th century, because of its good whitening effect, it has been widely used in paper, textile, plastic, coating, synthetic detergent and leather industry. This paper introduces the whitening mechanism and unique whitening performance of fluorescent whitening agent. Based on the comprehensive analysis of the relevant literature and the FWA included in the United States CA in the past four years, in this paper, the development status in the country, inside and outside and the related problems existing in the current domestic production are summarized, and the future development direction-the development of environmentally friendly varieties, the localization of good performance products, the series development of products and the research of FWA compound efficiency are discussed, and its application is also briefly introduced.

Key words:

fluorescent brightener Structure apply Development

DOI:

10.3969/j.issn.1672-3961.2004.03.028

cited:

year:

2004

Last Update：2023-08-16 22:05:47

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole]

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2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole]

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole]

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole]

CAS: 2397-01-5

Molecular Formula: C36H34N2O2

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Names and Identifiers

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Physico-chemical Properties

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Fluorescent whitening agent

from hownet

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Determination of fluorescent whitening agents in plastic products of food contact materials by high performance liquid chromatography with fluorescence detection

Author:

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Separation and determination of four fluorescent whitening agents in washing products by solid phase extraction-ultra performance liquid chromatography

Author:

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Fluorescent whitening agent and its application and development

from VIP Journal Professional Edition

Supplier List

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] Request for Quotation

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole]

CAS: 2397-01-5

Molecular Formula: C36H34N2O2

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Names and Identifiers

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Physico-chemical Properties

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Fluorescent whitening agent

from hownet

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Determination of fluorescent whitening agents in plastic products of food contact materials by high performance liquid chromatography with fluorescence detection

Author:

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Separation and determination of four fluorescent whitening agents in washing products by solid phase extraction-ultra performance liquid chromatography

Author:

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole] - Fluorescent whitening agent and its application and development

from VIP Journal Professional Edition

Supplier List

2,2'-(Vinylenedi-p-phenylene)bis[5-tert-butylbenzoxazole]