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 …

2012年5月9日 · Have you had your hair colored lately? If so, you were probably exposed to phenylenediamine (PPD), a chemical widely used in most hair dyes, even those that claim to …

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) …

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 is primarily used as a dye intermediate and as a dye. Acute (short-term) exposure to high levels of p-phenylenediamine may cause severe dermatitis, eye irritation and …

p-Phenylenediamine is primarily used as a dye intermediate and as a dye. Acute (short-term) exposure to high levels of p-phenylenediamine may cause severe dermatitis, eye irritation and …

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 …

Para-phenylenediamine. Para-phenylenediamine (PPD), the 2006 contact allergen of the year, is an aromatic amine that is a highly potent sensitizer and common cause of ACD.

o-PHENYLENEDIAMINE | C6H8N2 | CID 7243 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, …

2021年1月8日 · ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - p-Phenylenediamine. See annual publication for most recent …