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Specialty Chemistry Forums => Citizen Chemist => Topic started by: varianti on February 20, 2009, 08:07:22 AM

Title: how to remove color from paper
Post by: varianti on February 20, 2009, 08:07:22 AM

can anyone please tell me how to remove a color from paper any chemical water or anything please write me at piano.voices@gmail.com

Title: Re: how to remove color from paper
Post by: Arkcon on February 20, 2009, 09:27:13 AM

It really depends on the paper, and the source of the color, and what you need the paper for, afterward.  A little more specificity, (well, a lot more, actually,) would allow us to give you a more helpful answer.  'Tho my knee-jerk responce would probably be, that you can get the best results if you just buy the correct type and color of paper for your application.

Title: Re: how to remove color from paper
Post by: enahs on February 20, 2009, 09:46:59 PM

Hydrogen peroxide possibly.

Title: Re: how to remove color from paper
Post by: Fleaker on February 21, 2009, 08:00:08 PM

Hypochlorite, peroxide, etc. are all the usual bleaching agents.


I believe industry uses Cl₂O.

Title: Re: how to remove color from paper
Post by: P on February 23, 2009, 04:54:17 AM

When doing work experience in a tissue paper factory a few yearsd back, they used Sodium Hyperchlorate to bleach off cuts of rolls back to white for recycling back into pulp.  Blue was the hardest colour to bleach out - it needed 10 times the amount of bleach to shift the blue dyes than it did for the pinks, yellows and greens.

Title: Re: how to remove color from paper
Post by: varianti on February 23, 2009, 07:12:02 AM

i need it for STARCH and LINEN PAPER

Title: how to remove color from paper 2
Post by: varianti on February 23, 2009, 07:20:39 AM

can anyone please tell me how to remove a color from paper any chemical water or anything please write me at piano.voices@gmail.com

i need it for STARCH and LINEN PAPER

Title: Re: how to remove color from paper
Post by: billnotgatez on February 23, 2009, 08:13:07 AM

varianti

i merged your 2 post since they were on the same topic

Title: Re: how to remove color from paper
Post by: P on February 24, 2009, 05:30:38 AM

Er... try Bleach?