3846-71-7

Basic information

• Product Name: UV-320
• Synonyms: 4,6-Di-tert-butyl-2-(2H-benzotriazole-2-yl)phenol;HDBB;2-(2'-Hydroxy-3',5'-di-t-butylphenyl)benzotriazole;2-Benzotriazole-2-yl-4;6-di-tert-butylphenol;3,5-Dibutylhy-2-droxyphenylbenzotriazole;2-(3,5-Di-t-butyl-2-hydroxyphenyl)benzotriazole;2-(2H-Benzo[d][1,2,3]triazol-2-yl)-4,6-di-tert-butylphenol
• CAS NO: 3846-71-7
• Molecular Formula: C₂₀H₂₅N₃O
• Molecular Weight: 323.44
• EINECS: 223-346-6
• Mol File: 3846-71-7.mol

Chemical Properties

• Melting Point: 152-154°C
• Boiling Point: 444 °C at 760 mmHg
• Flash Point: 215°C
• Appearance: /
• Density: 1.1 g/cm³
• Vapor Pressure: 1.7E-08mmHg at 25°C
• Refractive Index: 1.585
• Storage Temp.: 2-8°C
• Solubility: Chloroform (Slightly), Methanol (Slightly)
• PKA: 9.41±0.48(Predicted)
• CAS DataBase Reference: UV-320(CAS DataBase Reference)
• NIST Chemistry Reference: UV-320(3846-71-7)
• EPA Substance Registry System: UV-320(3846-71-7)

Safety Data

• Statements: 48/22-52/53
• Safety Statements: 26-36/37/39
• RIDADR: 3077
• Hazardous Substances Data: 3846-71-7(Hazardous Substances Data)

Usage

Uses

UV-320 is a benzotriazole UV stabilizer, which is used to increase product stability and to prevent discolouration in various consumer and industrial goods such as plastics. Benzotriazole UV stabilizers are a pollutant for the aquatic environment and have been implicated as a potential stable and toxic ligands for aryl hydrocarbon receptor in human.

InChI:InChI=1/C20H25N3O/c1-19(2,3)13-11-14(20(4,5)6)18(24)17(12-13)23-21-15-9-7-8-10-16(15)22-23/h7-12,24H,1-6H3

Upstream product

• 130-15-4 [1,4]naphthoquinone 
• 95-54-5 1,2-diamino-benzene 
• 325463-16-9 3,5-di-tert-butyl-1,2-benzoquinone 1-oxime 
• 3383-21-9 3,5-di-tert-butyl-o-benzoquinone 
• 117-80-6 2,3-Dichloro-1,4-naphthoquinone 
• 89-63-4 4-Chloro-2-nitroaniline 
• 88-74-4 2-nitro-aniline 
• 84755-45-3 2-(6-chloro-1-oxido-2H-benzotriazol-2-yl)-4,6-bis(1,1-dimethylethyl)phenol 
• 96-76-4 2,4-di-tert-Butylphenol 
• 52184-29-9 2-nitro-4-chloro-2'-hydroxy-3',5'-di-tert-butylazobenzene 
• 52184-14-2 2,4-Di-tert-butyl-6-(2-nitro-phenylazo)-phenol 
• 52184-14-2 2,4-bis(1,1-dimethylethyl)-6-[(2-nitrophenyl)diazenyl]phenol 
• 3864-99-1 2-(5'-chloro-2'H-benzotriazol-2'-yl)-4,6-di-tert-butylphenol 
• 84755-44-2 2,4-bis(1,1-dimethylethyl)-6-(1-oxido-2H-benzotriazol-2-yl)phenol 

Downstream Products

• 784163-33-3 2,4-di-tert-butyl-6-(4,7-dibromo-2H-benzo[d][1,2,3]triazol-2-yl)phenol 
• 3147-76-0 2-(5-tert-butyl-2-hydroxyphenyl)benzotriazole 
• 34074-96-9 2-(2'H-benzotriazol-2'-yl)-6-t-butylphenol 
• 10096-91-0 2-(2-Hydroxyphenyl)-2H-benzotriazole 

Relevant articles and documents

NOVEL PROCEDURE FOR THE FORMATION OF 2H-BENZOTRIAZOLE BODIES AND CONGENERS

The present invention relates to a process for the preparation of 2H-benzotriazole compounds and congeners, novel 2H-benzotriazole compounds and congeners and their use as UV absorbers in coatings and bulk plastics.

Body-care and household products and compositions comprising specific sulfur-containing compounds

Disclosed are stabilized body care products, household products, textiles and fabrics which comprise specific sulfur containing compounds. Dyed products and articles are effectively stabilized against color degradation. The products are for example skin-care products, hair-care products, dentifrices, cosmetics, laundry detergents and fabric softeners, non-detergent based fabric care products, household cleaners and textile-care products.

Preparation of 2-aryl-2H-benzotriazoles by zinc-mediated reductive cyclization of o-nitrophenylazophenols in aqueous media without the use of organic solvents

Zinc powder-mediated reductive cyclization of o-nitrophenylazophenols in alkaline solution affords the corresponding 2-aryl-2H-benzotriazoles in high yields under mild reaction conditions. No organic solvents are used in the reaction and only minimal amounts in the work-up.

METHOD FOR PREPARING 2-(2-HYRDROXYPHENYL)-2H-BENZOTRIAZOLE

This invention provides a method for preparing 2-(2-hydroxyphenyl)-2H-benzotriazole of formula (I) below, consisting of steps of a) performing a first reduction in which hydrazine hydrate is added to a compound of formula (II) below with or without a phase transition catalyst in the presence of solvents which include a nonpolar solvent, water, and an alkaline compound, thereby preparing a compound of formula (III) below, and b) performing a second reduction in which water is added to the compound of formula (III) prepared in step a), and then zinc powder and sulfuric acid are added thereto with or without the phase transition catalyst, wherein, X is halogen or hydrogen, R is hydrogen, C1-C12 alkyl, C5-C8 cycloalkyl, phenyl, or phenyl-C1-C4 alkyl; and R' is C1-C12 alkyl, C5-C8 cycloalkyl, phenyl, or phenyl-C1-C4 alkyl

4-Formyl amino-n-methylpiperidine derivatives, the use thereof as stabilisers and organic material stabilised therewith

The present invention relates to 4-formylamino-N-methylpiperidine derivatives of the formula (I) where the variables are as defined in the Description, to a process for preparing these piperidine derivatives, to the use of these piperidine derivatives of the invention, or prepared according to the invention, for stabilizing organic material, in particular for stabilizing plastics or coating materials, and also to the use of these piperidine derivatives of the invention, or prepared according to the invention, as light stabilizers or stabilizers for wood surfaces. The present invention further relates to stabilized organic material which comprises these piperidine derivatives of the invention or prepared according to the invention.

Processes for the preparation of benzotriazole UV absorbers

Provided is a process for preparing 2H-benzotriazole UV absorbers containing a perfluoroalkyl moiety at the 5-position of the benzo ring, for example a trifluoromethyl group, which involves diazotizing the perfluoroalkyl substituted o-nitroaniline using concentrated sulfuric acid plus sodium nitrite or nitrosylsulfuric acid to form the corresponding monoazobenzene intermediate via the diazonium salt intermediate which is reduced to the corresponding 5-perfluoroalkyl substituted 2H-benzotriazole UV absorber compound by conventional reduction means. Also provided is a novel one-pot, multiphase reaction for the preparation of 2(2-nitrophenylazo) substituted phenols, which are precursors for 2H-benzotriazole UV absorbers.

2-(2′-hydroxyphenyl)benzotriazoles used as U.V. stabilizers

2-(2′-hydroxyphenyl)benzotriazoles having general formula (I). The above 2-(2′-hydroxyphenyl)benzotriazoles are useful as light stabilizers for organic polymers.

2-(2′-hydroxyphenyl) benzotriazoles containing a 2,4-imidazolidinedione group and process for their preparation

2-(2′-hydroxyphenyl)benzotriazoles having general formula (I). The above 2-(2′-hydroyzphenyl)benzotriazoles having general formula (I) are useful as heat, oxygen and light stabilizers for organic polymers. In particular they are useful as UV stabilizers for organic polymers.

Electrochemical synthesis of 2-aryl-2H-benzotriazoles and their N-oxides by controlled potential cathodic electrolysis

Using a divided cell, reductive cyclizations of o-nitrophenylazo dyes (1) toward 2-aryl-2H-benzotriazole-1-oxides (2) or 2-aryl-2H-benzotriazoles (3) were successfully accomplished by the controlled potential cathodic electrolysis reactions. 1 was transformed to 2 under neutral conditions while 1 was transformed to 3 under basic conditions.

Liposomogenic UV absorbers

PCT No. PCT/EP96/00959 Sec. 371 Date Sep. 15, 1997 Sec. 102(e) Date Sep. 15, 1997 PCT Filed Mar. 7, 1996 PCT Pub. No. WO96/29302 PCT Pub. Date Sep. 26, 1996There are described liposomogenic UV absorbers, comprising a hydrophilic head group (=Z), a spacer (=W), a UV chromophore (Q) having an absorption in the range from 285 to 400 nm and at least one hydrophobic tail group (=A) of the formula (1), in which A1 and A2, independently of one another, are a hydrophobic radical, Q is a UV chromophore, W is an organic radical, Z1 and Z2, independently of one another, are a hydrophilic radical, n1 and n2, independently of one another, are a number from 0 to 4, n1=n2=0 not being additionally included, p is 1 or 2, q is a number from 0 to 3, r1 is 1 or 2, r2 is 0 or 1, and s1 is a number from 1 to 3. The liposomogenic UV absorbers according to the invention are preferably used as sunscreen agents in cosmetic preparations. They are capable of self-organization into bimolecular layers, and can thereby penetrate into the stratum corneum to a high extent and behave there in an extremely wash-resistant manner.