Acid red 114

Acid Red 114 is a synthetic azo dye commonly used in various industrial applications, including textiles, paper, and leather. It is known for its vibrant red color and is part of the larger class of azo dyes, which are characterized by the presence of one or more azo groups (-N=N-) as part of their molecular structure.

Chemical Structure and Properties

Acid Red 114 is an azo compound, which means it contains the functional group R-N=N-R', where R and R' can be aryl or alkyl groups. The chemical formula for Acid Red 114 is C37H28N4Na2O10S3, and it has a molecular weight of 830.81 g/mol. The dye is typically used in its sodium salt form, which enhances its solubility in water.

Physical Properties

• Appearance: Red powder
• Solubility: Soluble in water
• Melting Point: Decomposes before melting

Chemical Properties

Acid Red 114 is stable under normal conditions but can decompose when exposed to strong acids or bases. It is sensitive to light and heat, which can cause fading over time.

Applications

Acid Red 114 is primarily used in the dyeing of textiles, particularly wool and silk, due to its affinity for protein fibers. It is also used in the coloring of paper and leather products. In addition, it finds applications in the food industry as a colorant, although its use is subject to regulatory approval in different countries.

Health and Safety

As with many synthetic dyes, there are concerns about the potential health effects of Acid Red 114. It is important to handle the dye with care, using appropriate personal protective equipment to avoid inhalation or skin contact. The dye can cause allergic reactions in sensitive individuals and may pose environmental risks if not disposed of properly.

Environmental Impact

The production and use of Acid Red 114 can lead to environmental pollution if waste products are not managed correctly. The dye can contribute to water pollution, affecting aquatic life due to its persistence and potential toxicity. Efforts to treat and remove azo dyes from wastewater include biological, chemical, and physical methods.

Regulation

The use of Acid Red 114 is regulated in many countries to ensure safety for consumers and the environment. Regulations may limit its use in certain applications, particularly in food and cosmetics, where human exposure is more direct.

Also see

• Azo dye
• Textile dyeing
• Environmental impact of dyes
• Synthetic dyes