Acid Green 9

Acid Green 9 appearance is deep yellow powder. Soluble in cold water and hot water, soluble in ethanol turquoise blue. The strong sulfuric acid dyes to orange, dilute to yellow. The water solution is green, add sodium hydroxide to olive green, the precipitation for dark brown. White wine.green, dyeing copper ions in color shade darker and darker color iron ion in yellow.

TRADE NAME:Acid Green 6B,Acid Brilliant Green B,Acid Morpant Black PV

Key Features

• Bright, vivid green shade with high visual impact
• Excellent solubility in water for uniform dyeing
• High level of colorfastness to washing and light
• Compatible with protein fibers like wool and silk
• Stable under standard storage conditions
• Easy to handle and mix with other acid dyes

Technical Specifications

• ‍CAS NO: 4857-81-2
• CI.NO: 42100
• Molecular Formula: C37H34ClN2NaO6S2
• Molecular Weight: 725.25
• Shade: Bright blue light green‍

Application Features

Colour Fastness Test

Application:

This product used for wool, silk, polyamide, viscose, wool blended fabric dyeing and printing, also can be used for paper, leather, cosmetics and biological color.

Acid Green 9 Use condition:

• ‍1. Mainly used for dyeing and printing of wool, silk, nylon and wool blend fabrics, and also for paper, leather, cosmetics and biological coloring.
• 2. Wool dyeing can be carried out in a sulfuric acid bath or a formic acid bath. The pH of the dyeing bath is adjusted to 2~4, and the highest dyeing temperature is 95~100°C; silk and nylon dyeing should be carried out in a weak acid bath. When the fibers are dyed in the same bath, the nylon and silk are colored, and the cellulose fibers are rarely stained.
• 3. The leveling property is better, the color is more vivid, and the color light is often used. The main disadvantage is that the light fastness is very poor, which affects its use, and is generally only suitable for the dyeing of wool products with high color vividness.
• 4. When dyeing, the color of the copper ion becomes darker, and when it encounters the iron ion, the light becomes dark yellow.‍

FAQ

What fibers are most suitable for Acid Green 9?

Acid Green 9 works best on protein fibers such as wool, silk, and nylon, providing even and bright coloration.

How do I achieve maximum colorfastness?

To improve wash and light fastness, maintain the recommended pH range during dyeing and follow the standard post-dyeing fixation procedures.

Can Acid Green 9 be mixed with other dyes?

Yes, it is compatible with other acid dyes for creating custom shades, but pre-testing is recommended to ensure color consistency.

What storage conditions are ideal for Acid Green 9?

Store in a cool, dry, and dark environment, away from strong acids or oxidizing agents, to maintain its stability and shelf life.

Is Acid Green 9 suitable for laboratory applications?

Yes, its reliable solubility and stable chemical properties make it ideal for research, analytical, and dyeing experiments in laboratory settings.