acid red 54

• CAS: 6360-03-8
• Catalog Number: ACM6360038
• Category: Acid Dyes
• Molecular Weight: 467.39
• Molecular Formula: C16H11N3Na2O7S2
• Description: Acid Red 54 is a synthetic dye that belongs to the class of acid dyes.
• Synonyms: Acid Red 54:1, Acid Red NG, Acid Red NG 4BN.
• Appearance: Powder
• Application: Acid dyes are water-soluble anionic dyes that are used primarily for dyeing protein fibers, such as wool, silk, and nylon.
• Storage: Store at 2-8 ℃
• Features And Benefits: As an acid dye, Acid Red 54 has a sulfonic acid group (-SO3H) in its molecular structure, which gives it an affinity for protein fibers. It is commonly used in the textile industry for dyeing wool and silk fabrics, as well as for dyeing leather. Acid Red 54 can produce a range of vibrant red shades, depending on the concentration and application method.

Case Study

Continuous-Flow Synthesis of Acid Red 54 in Microchannel Reactor

Yueqi Wang. Guangdong Chemical Industry, 2016, 43(7), 1-2.

Acid red 54 dye can be prepared by continuous coupling using microchannel reactor. The optimized process conditions include: the molar ratio of diazo component to coupling component is 1:1, flow rate v=0.18 m/s, residence time t=11.11s, and microchannel inner diameter D=1.0 mm. The synthesis yield of acid red at room temperature can reach 96.8%.
Synthetic procedure of acid red 54
· Weigh a certain amount of anthranilic acid, dissolve it in 36% HCl solution, and then add a certain amount of water.
· Add 30% NaNO2 solution dropwise under ice bath conditions to carry out diazotization reaction for 1 hour.
· Use urea to remove excess sodium nitrite, and use NaHCO3 to adjust the pH to prepare the diazo component.
· Add NaHCO3 to γ acid to dissolve and then dilute with water to prepare the coupling component.
· The above-mentioned diazo component and coupling component are coupled in a polytetrafluoroethylene tube at the same flow rate to prepare the target dye acid red 54.