Talk:Dye

Needs more

History. Dyeing has been important and an important item of trade since time immemorial. We should address it. -LlywelynII (talk) 09:15, 21 July 2009 (UTC)

Possible source here.

Affinity issue

There's no good definition of affinity on the affinity page that strictly matches the use of affinity in this article. Someone who knows the subject better should fix the link, with or without adding a new affinity (something) article.

What the?

Why man-made?

dunno, but most of them are.

why man-made - i presume man made is - manufactured from start / from basic level - instead of extracting from some natural thing (plant, fruit, flower , insect etc) - javad (talk) 17:48, 11 April 2008 (UTC)

Somebody needs to decide what the hell "organic" means in the context of this article. The most common "organic" substances used in every-day life are organic foods, meaning that they are produced naturally without any synthetic or artificial fertilizers, pesticides, etc. This article seems to be implying that an "organic dye" is one that is produced from once-living materials, but most people upon hearing the term "organic dye" would immediately think of natural dyes such as those derived from blueberries, not of somebody taking woad leaves and pouring HCl on them or something along those lines. Article needs to either explain itself to the laymen or be rewritten in a commonly legible manner. In fact, since organic dyes take up about half of the article, this should probably be split and have more elaboration put into it somehow. --72.23.147.74 (talk) 17:31, 19 April 2009 (UTC)

organic here has the scientific meaning of being a carbon compound. ie organic dyes are compounds which contain the element carbon. This is the normal definition of organic when relating to a chemical compound such as a dye molecule. Organic in the everyday sense as applied to foods, cotton fibres etc refers to food derived from plants grown without artificial pesticides or fertilisers. (Instead fertilisers such as fish meal are used which in turn leadSpecial:Contributions/chemrover (talk) 14:03, 8 March 2016 (UTC) to environmental problems in the sea such as the demise of sandeels and their common predators such as cod, puffins and sea trout.)the other irony is that most pesticides would be classed as organic compounds , in the chemistry sense, since they are carbon compounds. Hopefully this clears things up a bit

natural dyes are organic dyes which are harvested from living organisms eg plants (eg indigo), insects (eg cochineal), shellfish etc.

Synthetic organic dyes are still carbon compounds but have been made from starting materials extracted, usually from fossil sources such as coal or oil. Hence 'analine dyes' are synthetic organic dyes made from starting materials which include analine, a substance extracted from coal tar.

Whats the difference between a pigment and a dye?

Please answer in 1 paragraph. (Its for my grade 9 science project and I need to know please. I will cite this page on my project (im not gonna plagiarize) :-) thanx.--[[User:Storkian|Storkian] 00:19, 24 November 2006 (UTC)

please give me an example of the abstract of dye —Preceding unsigned comment added by 203.111.235.135 (talk) 08:42, 25 September 2007 (UTC)

A dye is a coloring? What is a pigment? —Preceding unsigned comment added by 76.29.74.154 (talk) 00:36, 9 November 2007 (UTC)

Dyes vs. Pigments In Digital Printing

Would be great to have some comments on what kinds of dyes are used in ink jet based printers, and what specific properties of dyes make them less color-fast in this application.—Preceding unsigned comment added by 69.51.73.161 (talk) 20:09, 16 September 2007 (UTC)

POOR!!!

This article is poorly written. It contains too many words that most people won't be able to understand. Wikipedia should be a place where everyone can easily learn, not a place for snobs to show off their intellectual prowess. —Preceding unsigned comment added by 12.26.68.146 (talk) 17:58, 29 February 2008 (UTC)

Is it the same thing?

Mauveine is an aniline dye - is that the same as synthetic organic? 110.32.230.87 (talk) 07:23, 23 March 2011 (UTC)

Synthetic organic dyes are carbon compounds and have been made from starting materials extracted, usually from fossil sources such as coal or oil. 'Analine dyes' are a type of synthetic organic dye made from starting materials which include analine, a substance extracted from coal tar. — Preceding unsigned comment added by [[Special:Contributions/chemrover] (talk) 14:14, 8 March 2016 (UTC)

More detail needed on types and methods

Britannica has an excellent overview of synthetic dye techniques. Many dye companies have the same, like Meghmani. – SJ + 02:07, 20 October 2021 (UTC)

Dye and its significance

What according to you is dying and its significance and even its classification 223.236.19.241 (talk) 05:40, 9 August 2022 (UTC)

Dyes

Observation 182.54.149.223 (talk) 12:41, 24 November 2022 (UTC)

Elements of dye

Elements if dye 41.191.104.229 (talk) 14:33, 26 November 2023 (UTC)