Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry any of the three
isomeric di -amino -benzenes , used asintermediates in the manufacture ofpharmaceuticals ,plastics etc.
Etymologies
Sorry, no etymologies found.
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Examples
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This is because black henna comprises para-phenylenediamine (PPD), a substance that can cause serious skin reactions.
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•Non-Hodgkin's lymphoma has increased 76 percent due mostly to phenoxy herbicides; and phenylenediamine hair dyes;
Samuel S. Epstein: Reckless Indifference Of The American Cancer Society To Cancer Prevention 2009
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Reflex is a semi-permenant hair colourant that is perfect for subtle experimenting as it lasts up to four weeks and is free from ammonia, resorcinol, peroxide and P-phenylenediamine PPD.
Archive 2008-03-01 Thatsnews 2008
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Although you can develop an allergy to many ingredients in hair coloring, the most likely culprit is a chemical called para-phenylenediamine (PPD).
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Many other countries, including Japan, have banned carcinogenic hair-color ingredients, the most notorious of which is phenylenediamine PPD.
The Truth About Beauty Kat James 2007
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Many other countries, including Japan, have banned carcinogenic hair-color ingredients, the most notorious of which is phenylenediamine PPD.
The Truth About Beauty Kat James 2007
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A chemical found in most hair dyes called paraphenylenediamine (or p-phenylenediamine, or PPD), is another common allergen.
The Seattle Times 2010
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Perchloric acid (PCA) (Merck) and o-phenylenediamine (Across) were added to a final concentration of 0.5 M and 5 mM, respectively.
PLoS ONE Alerts: New Articles Arunava Dasgupta et al. 2010
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Factbox: "Dirty dozen" chemicals worth avoiding: 1. BHA and BHT: A preservative in makeup and moisturizers that can disrupt the endocrine system, cause cancer and harm fish and wildlife 2. Coal tar dyes including p-phenylenediamine and numbered colours listed as "CI": Used in some hair dyes and other cosmetics; may cause cancer or contain heavy metals considered toxic to the brain.
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Non-Hodgkin's lymphoma has increased by 76% due mostly to phenoxy herbicides; and phenylenediamine hair dyes;
t r u t h o u t 2010
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