21371-50-6

Basic information

• Product Name: 2-(2H-1,2,3-benzotriazol-2-yl)-4-hydroxybenzenecarboxylic acid
• Synonyms: 2-(2H-1,2,3-benzotriazol-2-yl)-4-hydroxybenzenecarboxylic acid
• CAS NO: 21371-50-6
• Molecular Weight: 255.233
• Mol File: 21371-50-6.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: 2-(2H-1,2,3-benzotriazol-2-yl)-4-hydroxybenzenecarboxylic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 2-(2H-1,2,3-benzotriazol-2-yl)-4-hydroxybenzenecarboxylic acid(21371-50-6)
• EPA Substance Registry System: 2-(2H-1,2,3-benzotriazol-2-yl)-4-hydroxybenzenecarboxylic acid(21371-50-6)

Safety Data

• Hazardous Substances Data: 21371-50-6(Hazardous Substances Data)

Upstream product

• 2440-22-4 2-(2-Hydroxy-5-methylphenyl)benzotriazole 
• 22358-68-5 4-hydroxy-3-((2-nitrophenyl)diazenyl)benzoic acid 
• 99-76-3 methyl 4-hydroxylbenzoate 
• 88-74-4 2-nitro-aniline 
• 69698-20-0 2-(2H-1,2,3-benzotriazol-2-yl)-4-methylphenyl acetate 
• 119-66-4 2-nitrobenzenediazonium chloride 
• 1435-71-8 2-nitro-2'-hydroxy-5'-methyl-azobenzene 
• 106-44-5 p-cresol 
• 114226-64-1 2-(2H-1,2,3-benzotriazol-2-yl)-4-dibromomethylphenyl acetate 
• 114226-62-9 2-(2H-1,2,3-benzotriazol-2-yl)-4-hydroxybenzenecarboxaldehyde 

Downstream Products

• 21371-52-8 3-(2H-benzo[d][1,2,3]triazol-2-yl)-4-hydroxybenzoic acid hexyl ester 

Relevant articles and documents

Novel polycyclic compound

The invention provides a novel polycyclic compound as well as a synthesis method and application thereof. The compound of the present invention includes a plurality of carbocyclic and/or heterocyclicstructures having visible or fluorescent light emitting groups and covalently bonded to at least one ultraviolet and/or visible (blue) light absorbing group to provide stability. The compound providedby the invention can be used as a light conversion agent, a dye, a pigment, a fluorescent agent and an ultraviolet light or blue light absorbent, and can be applied to optical films, agricultural films, optical discs (disks), optical lenses, goggles, skin care, cosmetics, illumination, coatings, adhesives, light stabilizers, panels and other products.

Synthesis of new ultraviolet light absorbers based on 2-aryl-2H- benzotriazoles

A procedure for the synthesis of some new ultraviolet absorbers of the benzotriazole series is reported. The compounds bear a carboxylic or a formyl group para to the hydroxy group, and these functionalities impart to the absorbers improved compatibility with certain disperse dyes on polyester fibers.