• Dyeing,  News

    Archroma Introduces Aniline-Free Indigo

    If you haven’t heard of aniline, chances are you soon will. Aniline is considered the “mother molecule” of indigo, which gives jeans its blue color. But it has stirred controversy in recent years, causing some large brands and retailers to put it on the black list. Here is the dilemma: If you take aniline out of the equation, the dye will still produce a range of blue hues, which are suitable for the mass market, but the purists among the denim heads may reject it. Whereas if you leave it in, it will pose a potential hazard to human health. The EPA has classified aniline as a Group B2 probable…

  • Dyeing,  News

    Potential of DyStar’s Sodium Hydrosulfite-Free Indigo

    There is a small revolution coming. Although the news of DyStar launching a new, sodium hydrosulfite-free indigo dye, which the chemical company introduced to the public late last year, went almost undetected by the fashion media, its potential for the industry cannot be stressed enough. Here’s why: Indigo is not a conventional dye. It is insoluble in water and must first undergo a chemical reaction that will turn it into a soluble, dye-friendly form. This can be done with bacteria during a fermentation process, which is considered green but takes time and is therefore not popular with the mass market, or it can be achieved via a powerful reducing agent…