HAZARD ALERT: Treat all sulfuric acid solutions with the same caution you would have for concentrated sulfuric acid. For example, the pH of 0.05 M sulfuric acid solution is 1.2. See the hazard alert and safety information under Catalog No. S0228.
Storage: Inorganic #9; preferably in a dedicated acid cabinet.
Shelf Life: Indefinite
Flinn Catalog/Reference Manual Page 146
Flinn Middle School Catalog/Reference Manual Page 87