First-derivative spectrophotometric determination of salicylic acid in aspirin.
Salicyclic acid has been determined in aspirin powder and tablets by first-derivative spectrophotometry at 316 nm with base-line correction, with a coefficient of variation less than 1%.
Wahbi
A A
AA
Pharmaceutical Chemistry Department, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh-11451, Saudi Arabia.
Al-Khamees
H A
HA
Youssef
A M
AM