2- (2 H -enzotriazol-2-yl) -4,6-di- tert -butylphenol

Structural formula
General
Surname	2- (2 H -enzotriazol-2-yl) -4,6-di- tert -butylphenol
other names	2- (2 H -Benzotriazol-2-yl) -4,6-bis (2-methyl-2-propanyl) phenol; UV-320; Tinuvin 320;
Molecular formula	C 20 H 25 N 3 O
External identifiers / databases
EC number	223-346-6
ECHA InfoCard	100.021.225
PubChem	77455
ChemSpider	69864
Wikidata	Q43105370
properties
Molar mass	323.43 g mol −1
Melting point	152-154 ° C ° C
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 351-373-412
	P: ?
Authorization procedure under REACH	of particular concern : persistent, bio-accumulative and toxic ( PBT ), very persistent and very bioaccumulative ( vPvB ); subject to approval
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

2- (2 H -Benzotriazol-2-yl) -4,6-di- tert -butylphenol ( UV-320 ) is a chemical compound from the group of 2- (2-hydroxyphenyl) -2 H -benzotriazoles . It serves as a UV stabilizer , is based on a UV filter effect and acts as an anti - aging agent . It is also used to protect materials - especially to prevent plastic from discoloring.

Benzotriazole-based UV stabilizers are considered hazardous to water and are possibly stable and toxic ligands on the human aryl hydrocarbon receptor .

The detection of 2- (2 H -benzotriazol-2-yl) -4,6-di- tert- butylphenol in surface or waste water is possible after appropriate sample preparation using HPLC-MS techniques.

Individual evidence

↑ Entry on 2- (benzotriazol-2-yl) -4,6-di-tert-butylphenol at LabNetwork, accessed on November 18, 2017.
↑ Template: CL Inventory / not harmonized There is not yet a harmonized classification for this substance . A labeling of 2-benzotriazol-2-yl-4,6-di-tert-butylphenol in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on November 17, 2017, is reproduced from a self-classification by the distributor .
↑ Entry in the SVHC list of the European Chemicals Agency , accessed on February 13, 2020.
↑ Entry in the register of substances subject to authorization of the European Chemicals Agency , accessed on February 13, 2020.
↑ Entry on UV-320 at Toronto Research Chemicals , accessed on November 18, 2017 ( PDF ).
↑ H. Nagayoshi, K. Kakimoto, S. Takagi, Y. Konishi, K. Kajimura, T. Matsuda: Benzotriazole ultraviolet stabilizers show potent activities as human aryl hydrocarbon receptor ligands. In: Environmental Science & Technology . Volume 49, Number 1, January 2015, pp. 578-587, doi : 10.1021 / es503926w , PMID 25383696 .
^ R. Liu, T. Ruan, T. Wang, S. Song, F. Guo, G. Jiang: Determination of nine benzotriazole UV stabilizers in environmental water samples by automated on-line solid phase extraction coupled with high-performance liquid chromatography -tandem mass spectrometry. In: Talanta . Volume 120, March 2014, pp. 158–166, doi : 10.1016 / j.talanta.2013.10.041 , PMID 24468355 .

[1] Entry on 2- (benzotriazol-2-yl) -4,6-di-tert-butylphenol at LabNetwork, accessed on November 18, 2017.

[2] Template: CL Inventory / not harmonized There is not yet a harmonized classification for this substance . A labeling of 2-benzotriazol-2-yl-4,6-di-tert-butylphenol in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on November 17, 2017, is reproduced from a self-classification by the distributor .

[SVHC-3] Entry in the SVHC list of the European Chemicals Agency , accessed on February 13, 2020.

[Zulassungspflicht-4] Entry in the register of substances subject to authorization of the European Chemicals Agency , accessed on February 13, 2020.

[5] Entry on UV-320 at Toronto Research Chemicals , accessed on November 18, 2017 ( PDF ).

[6] H. Nagayoshi, K. Kakimoto, S. Takagi, Y. Konishi, K. Kajimura, T. Matsuda: Benzotriazole ultraviolet stabilizers show potent activities as human aryl hydrocarbon receptor ligands. In: Environmental Science & Technology . Volume 49, Number 1, January 2015, pp. 578-587, doi : 10.1021 / es503926w , PMID 25383696 .

[7] R. Liu, T. Ruan, T. Wang, S. Song, F. Guo, G. Jiang: Determination of nine benzotriazole UV stabilizers in environmental water samples by automated on-line solid phase extraction coupled with high-performance liquid chromatography -tandem mass spectrometry. In: Talanta . Volume 120, March 2014, pp. 158–166, doi : 10.1016 / j.talanta.2013.10.041 , PMID 24468355 .