p-Phenylenediamine - Wikipedia
网页p-Phenylenediamine (PPD) is an organic compound with the formula C 6 H 4 (NH 2) 2. This derivative of aniline is a white solid, but samples can darken due to air oxidation. [1] It is mainly used as a component of engineering polymers and composites like kevlar. It is also an ingredient in hair dyes and is occasionally used as a substitute for ...
对苯二胺（有机化合物）_百度百科
网页对苯二胺（p-Phenylenediamine），又名乌尔丝D，是一种有机化合物，化学式为C 6 H 8 N 2 ，是最简单的芳香二胺之一，也是一种有广泛应用的中间体，可用于制取偶氮染料、高分子聚合物，也可用于生产毛皮染色剂、橡胶防老剂和照片显影剂，另外对苯二胺还是常用的 ...
P-Phenylenediamine - Safe Cosmetics
网页WHAT IS P-PHENYLENEDIAMINE? Consumers are primarily exposed to p-phenylenediamine (PPD) through its use in permanent hair dyes that rely on chemical reactions (called oxidation) to fix the color, where it is found in concentrations of about 4 percent. PPD reacts with hydrogen peroxide to bind the color to the hair permanently.
對苯二胺 - 维基百科，自由的百科全书
网页對苯二胺 （p-Phenylenediamine，簡稱 PPD）是一種 苯胺 衍生 有機化合物，其化學式為C 6 H 4 (NH 2) 2。 對苯二胺在室溫是一種無色的固體，但一般由於 氧化 緣故，其樣品普遍都含有一些黃色雜質。 對苯二胺日常主要用於 聚合物 和 複合材料 的生產過程中作為當中的一項組件，但也是 染髮劑 的一種成分。 參看. 散沫花. 參考資料. ^ 存档副本. [2011-07-14]. （原始内容 存档于2012-03-13）. 外部連結. Du Pont technical data sheet and sales policy …
p-Phenylenediamine | C6H4(NH2)2 | CID 7814 - PubChem
网页p-Phenylenediamine is primarily used as a dye intermediate and as a dye (e.g., hair dyes and dyes used for dyeing furs), as well as a photographic developing agent and a chemical intermediate. p-Phenylenediamine is also used as a vulcanization accelerator and as an antioxidant in rubber compounds.
Para-phenylenediamine allergy: current perspectives on …
网页2017年1月18日 · Para-phenylenediamine (PPD) is the commonest and most well-known component of hair dyes. Oxidative hair dyes and dark henna temporary tattoos contain PPD. Individuals may be sensitized to PPD by temporary henna tattooing in addition to dyeing their hair. PPD allergy can cause severe reactions and may result in complications.
P-Phenylenediamine Hair Dye Allergy and Its Clinical Characteristics
网页2018年4月23日 · P-phenylenediamine (PPD) is the most frequent contact sensitizer present in hair care products and is a primary patch test screening agent for hair dye contact allergy (HDCA) 2,3,6,7.
Phenylenediamine - Wikipedia
网页Look up phenylenediamine in Wiktionary, the free dictionary. Phenylenediamine may refer to: o -phenylenediamine or OPD, a chemical compound C 6 H 4 (NH 2) 2. m -phenylenediamine or MPD, a chemical compound C 6 H 4 (NH 2) 2. p -phenylenediamine or PPD, a chemical compound C 6 H 4 (NH 2) 2. N,N -dimethyl- p …
p-Phenylenediamine = 99.0 GC/NT 106-50-3 - MilliporeSigma
网页2024年9月5日 · p-Phenylenediamine (1,4-Phenylenediamine or PPDA) can be used as a precursor for the synthesis of asymmetric bis-schiff bases , angular diazatricycles , poly (p-phenylenediamine) and aromatic polyamides. It can also be used as a reactant in the synthesis of azo-schiff-base complexes of various metals.
P-phenylenediamine, n,n'-diethyl-n,n'-diphenyl- - NIST …
网页2010年9月6日 · P-phenylenediamine, n,n'-diethyl-n,n'-diphenyl-. Formula: C 22 H 24 N 2. Molecular weight: 316.4394. IUPAC Standard InChI: InChI=1S/C22H24N2/c1-3-23 (19-11-7-5-8-12-19)21-15-17-22 (18-16-21)24 (4-2)20-13-9-6-10-14-20/h5-18H,3-4H2,1-2H3. Copy Sheet of paper on top of another sheet.