Here is a link to a Vacuumland thread which provides some background on said topic ...
http://www.vacuumland.org/cgi-bin/TD/TD-VIEWTHREAD.cgi?14943
... and here is some information I'd posted in a similar thread earlier this year:
Here is information I located regarding RetrObright at en.wikipedia.org/wiki/Retro_brigh...
Retr0bright is a public domain chemical mixture used to remove yellowing from ABS plastic computer and electronics cases, including computers that were manufactured by Commodore, Apple, and Amiga in the 1980s and 1990s, and various video game consoles and cartridges.
Yellowing is caused by both bromine and exposure to UV light. Bromine is added[clarification needed] to ABS plastic, acting as a fire retardant.
Retr0bright is hydrogen peroxide, a small amount of an "active oxygen" laundry booster TAED as a catalyst, and a UV lamp. Sunlight can be used instead of a UV lamp.
The optimum mixture and conditions for reversing yellowing of plastics:
- Hydrogen peroxide solution, the stronger the better. 12% works fine; 6% works also, just more slowly.
- UV light, either from sunlight or a UV lamp.
- Approximately 1/4 teaspoonful (4.9 ml) per gallon (3.8 l) (1/3072) of Tetraacetylethylenediamine (TAED)-based laundry booster (concentrations of TAED vary).
- Xanthan gum or arrowroot can be added to the mixture, creating an easier-to-apply gel.
NOTE: When making and applying the mixture, users are advised take proper safety precautions and wear protective gloves and goggles. Hydrogen peroxide can cause serious chemical burns and blindness if splashed in the eyes.
BE AWARE: (from retr0bright.wikispaces.com/...)
It has come to our attention that some individuals are offering for sale "kits" similar to some of the Retr0bright recipes on auction and other sites. Please be aware that these are not endorsed by this Wiki in any way and the Wiki organisers shall not be held liable for any loss or injury caused by the use of these "kits".
Hydrogen Peroxide is classified as a hazardous substance and, as such, is not accepted by many postal services and couriers without declarations and special handling procedures. It also has other uses besides hair bleaching and Retr0bright, so we strongly advise caution on where and how much of this you buy.
This site's founders and authors do not sell Retr0bright for these very reasons and do not endorse or recommend any resale of premixed Retr0bright. If you see it for sale, it is not with our blessing or consent and we strongly advise caution: if you order some for delivery and it leaks in transit, you and the supplier could have some interesting questions asked of you.
We are also aware of something similar to Retr0bright being sold on eBay, with the seller using a picture taken from this Wiki. This is nothing to do with any of us, and we encourage you to ask the seller if they are complying with the Creative Commons License for the picture as we believe that consent has not been granted for this use, but, more importantly, also whether they are fully declaring the contents of their packages to their courier and are following best practice on shipping hazardous goods.
