Measurements of the photodegradation of PABA and some PABA derivatives.
The photodegradation of 4-aminobenzoic acid, 2-ethylhexyl N,N-dimethyl 4-aminobenzoate (Escalol 507) and 1-glyceryl 4-aminobenzoate (Escalol 106), resulting from irradiation by sun lamps, was examined by UV spectroscopy. 2-ethylhexyl N,N-dimethyl 4-aminobenzoate showed the longest half-life, indicating the highest photostability.
Flindt-Hansen
H
H
Department of Dermatology, Ullevaal Hospital, Oslo, Norway.
Nielsen
C J
CJ
Thune
P
P
D010129:4-Aminobenzoic Acid / Q000378:metabolism*; D000042:Absorption; D062365:Aminobenzoates / Q000378:metabolism*; D010777:Photochemistry; D013053:Spectrophotometry; D013472:Sunlight; D014466:Ultraviolet Rays; D062366:para-Aminobenzoates
D062365:Aminobenzoates; D062366:para-Aminobenzoates; D010129:4-Aminobenzoic Acid