p-phenylenediamine
|p-phen-yl-en-e-di-a-mine|
🇺🇸
/ˌpiː fəˌniːlɪndiˈæmiːn/
🇬🇧
/ˌpiː fɛˌniːlɪndiˈæmiːn/
para-positioned benzene diamine
Etymology
'p-phenylenediamine' originates from chemical nomenclature, where 'para-' refers to the positions of the amino groups on the benzene ring, 'phenylene' refers to the benzene ring, and 'diamine' means two amine groups.
'p-phenylenediamine' was named following the conventions of organic chemistry as the para isomer of phenylenediamine, distinguishing it from the ortho and meta isomers.
Initially, it referred specifically to the para isomer of phenylenediamine, and this meaning has remained consistent in scientific usage.
Meanings by Part of Speech
Noun 1
a chemical compound used mainly as a dye, especially in hair coloring and textiles, with the formula C6H4(NH2)2, where the amino groups are in the para position.
p-phenylenediamine is commonly found in permanent hair dyes.
Synonyms
Last updated: 2025/08/03 07:04