4106-67-6

Basic information

• Product Name: Pigment Yellow 5
• Synonyms: 2-[(2-nitrophenyl)azo]-3-oxo-n-phenyl-butanamide;2-[(o-nitrophenyl)azo]acetoacetanilide;C.I. 11660;pigment yellow 5;Butanamide, 2-(2-nitrophenyl)azo-3-oxo-N-phenyl-;2-[(2-nitrophenyl)azo]-3-oxo-n-phenyl-butanamid;Pigment yellow 5 (C.I. 11660);C. I. Pigment Yellow 5
• CAS NO: 4106-67-6
• Molecular Formula: C₁₆H₁₄N₄O₄
• Molecular Weight: 326.31
• EINECS: 223-884-1
• Mol File: 4106-67-6.mol
• Article Data: 2

Chemical Properties

• Melting Point: 225°C
• Boiling Point: 525.3ºC at 760 mmHg
• Flash Point: 271.5ºC
• Appearance: /
• Density: 1.32
• Vapor Pressure: 3.97E-11mmHg at 25°C
• Refractive Index: 1.628
• CAS DataBase Reference: Pigment Yellow 5(CAS DataBase Reference)
• NIST Chemistry Reference: Pigment Yellow 5(4106-67-6)
• EPA Substance Registry System: Pigment Yellow 5(4106-67-6)

Safety Data

• Hazardous Substances Data: 4106-67-6(Hazardous Substances Data)

Usage

General Description

Pigment Yellow 5, also known as PY5 or C.I. 19140, is a synthetic yellow azo dye, commonly known as Tartrazine or FD&C Yellow 5. It is a predominantly used coloring agent in the production of inks, paints, plastics and textiles. In the food industry, it is used to color candies, sodas, chips, and some pharmaceutical drugs. Despite its widespread use, there have been concerns about its safety, with some research linking it to hyperactivity in children and potential allergic reactions. However, it is approved for use in most countries, including the U.S. and the EU, following regulations for maximum allowable concentrations.

InChI:InChI=1/C16H14N4O4/c1-11(21)15(16(22)17-12-7-3-2-4-8-12)19-18-13-9-5-6-10-14(13)20(23)24/h2-10,15H,1H3,(H,17,22)

Upstream product

• 102-01-2 N-phenylacetoacetamide 
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Relevant articles and documents

Method used for synthesizing azo compound using solid particle one kettle method

The invention relates to a method used for synthesizing an azo compound using solid particle one kettle method. The method comprises following steps: solid particles are introduced into a reaction container, an inorganic acid, an aromatic primary amine, sodium nitrite, water, and a coupling component are added, mechanism stirring is carried out, when the reaction is monitored to be finished, filtering and rinsing are carried out, and the obtained filter cake is a finished product; or the solid particles are introduced into the reaction container, the inorganic acid, the aromatic primary amine,sodium nitrite, and water are added, mechanical stirring is carried out, after complete conversion of the aromatic primary amine, the coupling component is added, mechanical stirring is carried out,when the reaction is monitored to be finished, filtering and rinsing are carried out, and the obtained filter cake is a finished product. The solid particles are preferably selected from polytetrafluoroethylene particles, haw seeds, or stainless steel sand. The solid particles are added into the reaction system to promote reaction, no pre-heating or alkali adding dissolving of diazo components orthe coupling component is needed; most reaction is finished in 1h; reaction time is short; product quality is high; and reaction filtrate and excess inorganic acid can be recycled for a plurality of times.