51656-57-6

Basic information

• Product Name: 2-[(2-Nitrophenyl)azo]-4-(1,1,3,3-tetramethylbutyl)phenol
• Synonyms: 2-[(2-nitrophenyl)azo]-4-(1,1,3,3-tetramethylbutyl)phenol;2-(2-Nitrophenylazo)-4-tert-octylphenol;Einecs 257-338-9;Phenol, 2-((2-nitrophenyl)azo)-4-(1,1,3,3-tetramethylbutyl)-;Phenol, 2-(2-(2-nitrophenyl)diazenyl)-4-(1,1,3,3-tetramethylbutyl)-;Phenol,2-(o-nitrophenylazo)-4-T-octyl-
• CAS NO: 51656-57-6
• Molecular Formula: C₂₀H₂₅N₃O₃
• Molecular Weight: 355.4308
• EINECS: 257-338-9
• Mol File: 51656-57-6.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 505.7 °C at 760 mmHg
• Flash Point: 259.6 °C
• Appearance: /
• Density: 1.12 g/cm³
• Vapor Pressure: 7.53E-11mmHg at 25°C
• Refractive Index: 1.561
• PKA: 8.47±0.45(Predicted)
• CAS DataBase Reference: 2-[(2-Nitrophenyl)azo]-4-(1,1,3,3-tetramethylbutyl)phenol(CAS DataBase Reference)
• NIST Chemistry Reference: 2-[(2-Nitrophenyl)azo]-4-(1,1,3,3-tetramethylbutyl)phenol(51656-57-6)
• EPA Substance Registry System: 2-[(2-Nitrophenyl)azo]-4-(1,1,3,3-tetramethylbutyl)phenol(51656-57-6)

Safety Data

• Hazardous Substances Data: 51656-57-6(Hazardous Substances Data)

Usage

General Description

2-[(2-Nitrophenyl)azo]-4-(1,1,3,3-tetramethylbutyl)phenol, also known as Solvent Yellow 146, is a synthetic yellow azo dye commonly used in the production of industrial and consumer products, such as plastics, textiles, and printing inks. It is a stable and versatile compound with strong coloration properties, making it suitable for a wide range of applications. However,

InChI:InChI=1/C20H25N3O3/c1-19(2,3)13-20(4,5)14-10-11-18(24)16(12-14)22-21-15-8-6-7-9-17(15)23(25)26/h6-12,24H,13H2,1-5H3

Upstream product

• 88-73-3 2-Chloronitrobenzene 
• 88-74-4 2-nitro-aniline 
• 119-66-4 2-nitrobenzenediazonium chloride 
• 140-66-9 tert-octylphenol 

Downstream Products

• 3147-75-9 Cyasorb UV 5411 

Relevant articles and documents

ANTI-BLUE LIGHT COMPOUND, PREPARATION METHOD AND APPLICATION THEREOF

Disclosed is a blue light absorbing compound, its preparation method and use. The compound has high stability and is suitable for high temperature processing conditions as well as outdoor application. A method of covalently bonding a blue light absorbing compound with an ultraviolet light absorbing compound for increasing its stability is also provided. The compound is capable of absorbing or blocking ultraviolet light (UVA, UVB) and blue light to protect eyes. But long-wavelength blue light can be absorbed diminishingly, so that the transmitted light has a particularly good visual experience.

Preparation method of ultraviolet absorbent UV - 329 (by machine translation)

The invention provides a preparation method, UV - 329, of an ultraviolet absorber. The method comprises the following steps: performing ammonification, diazotization, coupling, one-step reduction, two-step reduction reaction and post-treatment to prepare 2 - (2 '- hydroxyl -5' - t-octylphenyl) benzotriazole product by o-nitrochlorobenzene. To the method, by ammonia water with a concentration 10%~25%, o-nitrochlorobenzene is subjected to diazotization reaction with nitrite to generate a diazonium salt, the diazotization reaction does not need to be carried out in a strong acid medium, and byproduct ammonia water of the product in the company is comprehensively utilized. The reduction closed-loop process of the intermediate azo product adopts 2-step reduction method, the strong reducing agent is prevented from directly reducing the azo double bond to the amine, impurity generation, product purity, and yield. (by machine translation)