AKA: 2-chlorobenzene-1, 4-diamine sulfate, 2-Chloro-1, 4-phenylenediamine sulfate, 6219-71-2, Fourrine SO, 1, 4-Benzenediamine, Fourrine 81, Renal SO, 2-Chlorobenzene-1, 4-diammonium sulphate
Allergen Warning
⚠️ PPD (Hair Dye)
Synthetic
Not Clean
1,4-Benzenediamine, 2-chloro-, sulfate
Solubility less than 1 mg/mL at 70 °F (NTP, 1992)
Formula
C6H9ClN2O4S
Mol. Weight
240.67
CAS #
6219-71-2, 61702-44-1
Form
Powder
State
2-chloro-p-phenylenediamine sulfate appears as light gray or lavender powder. (NTP, 1992)
Functions
Hair Dyeing
Colors Hair
Traditional Use
A sulfate salt of a synthetic hair dye precursor developed for improved solubility in aqueous formulations. The salt form was created to enhance stability and color development in permanent hair dyes.