Vibrant pink liquid lab color (15 ml)

Acid Red 52 (also known by its Color Index CI 16155), is a synthetic water-soluble dye used primarily in the textile and cosmetic industries. It's often employed in personal care products for coloring, such as in cosmetics, shampoos, and lotions. Below is a detailed description of the dye, its usage rate, and other relevant information:

Chemical Name and Identification

• Chemical Name: 1-(2-hydroxy-3-sulfonato-4-naphthylazo)-2-naphthol-3,6-disulfonic acid
• Color Index (CI): 16155
• CAS Number: 5943-53-1
• INCI Name: CI 16155, Acid Red 52

Appearance

• Physical Form: Acid Red 52 is typically a bright red powder or solid.
• Color: The color produced by this dye in solutions is red.
• Solubility: Acid Red 52 is water-soluble, making it suitable for use in aqueous formulations.

Solubility

• Water Soluble: It dissolves well in water, forming a vibrant red-colored solution. It is generally insoluble in oils and is used primarily in water-based formulations.

Usage Rate

• Typical Usage Rate: The concentration of Acid Red 52 in cosmetic formulations varies depending on the application and the desired intensity of the red color. It is typically used at very low concentrations:
  • For cosmetic formulations, the usage rate is often between 0.001% and 0.05%. This low concentration ensures that the color is bright but does not cause irritation.
  • Lip products, such as lipsticks, may contain Acid Red 52 at concentrations around 0.01% to 0.05% to achieve a rich red color.
  • In other products like lotions, shampoos, and body creams, concentrations are typically in the range of 0.001% to 0.01%, depending on the depth of color desired.

Applications

Acid Red 52 is most commonly used in cosmetic and personal care products, especially in products that benefit from red hues:

1. Lipsticks and lip glosses: To give products a rich, red tone.
2. Blushes and eye shadows: To provide a red or pinkish color.
3. Nail polishes: To create vibrant red hues.
4. Shampoos, conditioners, and body lotions: Sometimes used to provide a slight reddish tint to the product, though in small concentrations.

Safety and Regulatory Information

• FDA Approval: Acid Red 52 is allowed for use in cosmetics in various regions, including the U.S. It is regulated by the FDA for use in products that are applied topically, but its use is subject to concentration limits to ensure safety.
• Regulation: The FDA typically allows its use in external cosmetics and topical formulations, though its use in food and drug products may be restricted or not authorized.
• Sensitive Skin: As with any synthetic dye, individuals with sensitive skin may experience irritation or allergic reactions. It is recommended that the dye be tested for skin tolerance at low concentrations.

Safety and Toxicology

• Acid Red 52 is not classified as a carcinogen or mutagen, but like many synthetic colorants, it should be used within recommended concentrations to minimize the risk of allergic reactions or skin sensitivity.
• Eye Irritation: Contact with the eyes may cause irritation, so formulations should avoid direct contact with the eyes, especially in eye makeup products.

Conclusion

Acid Red 52 is a water-soluble, synthetic red dye used primarily in cosmetics and personal care products. It imparts a rich red or pinkish hue to products and is typically used in small concentrations, ranging from 0.001% to 0.05%, depending on the application. It is considered safe for use in most external cosmetic formulations, but like any colorant, its concentration must be monitored to avoid adverse reactions.