Name: SANDEEP

Message: KINDLY SEND ME FASTNESS PROPERTIES OF REACTIVE RED 106. I AM UNABLE TO FIND IT ON NET

This is an easy question to answer, because the information is in fact readily available on the net, on my site, in the FAQ. See my page on Lightfastness, which includes washfastness data as well. Scroll down through the reactive dyes, and you will see it in the vinyl sulfone (remazol) section:

CI name: Reactive Red 106
common name: VS Red C2G
lightfastness: 3 (out of 8)
washing: 3-4 (out of 5)
perspiration: 4-5 (out of 5) 
hypochlorite: 1 (out of 5) [resistance to bleach]
dischargeability: G (good)

To summarize, this red vinyl sulfone reactive dye is rather poorly resistant to light fading, but more resistant to washing, and it discharges extremely well. If particularly good fastness is important to you, you might want to choose a different reactive red dye; it's possible to find a reactive red dye with a washfastness of 4 to 5, out of 5, or a lightfastness of 4 to 5, or even 5 to 6, out of 8.

Note, however, that these data in each line on that page come from only one manufacturer, in this case, Asian Dyes. (Some dyes have more than one line on the page, indicating the variation between manufacturers.) Your own supply of dye may rate differently for washfastness, depending on the purity of the product and the presence of varying quantities of the usual contaminants, as well as by your methods of application, which can have a rather drastic effect if they are incorrect in any detail.

In order to have fastness numbers that you can rely on, you must contact your own manufacturer, the manufacturer of the dye supply that you are actually using, and get their figures for this specific dye. If you have more than one supplier, get the information from each, because dyes supplied by one manufacturer may be more or less fast than the very same dyes obtained from another. If your company is manufacturing these dyes yourself, you should do the tests yourself. Contact the American Association of Textile Chemists and Colorists (AATCC) for more information on how to perform the testing.

For more information about remazol type reactive dye, see "Vinyl Sulfone Fiber Reactive Dyes".

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