โ Scribed by Blaug, Seymour M. ;Hickman, Eugene ;Lach, John L.
No coin nor oath required. For personal study only.
It is particularly important when packaging g ygroscopic materials or materials that decompose in the presence of trace amounts of moisture. The cap as well as the cap liner must be considered in choosing a proper closure. The barrier eficiency of sixteen liners in metal caps, phenolic, melamine, and mineral filled plastic caps was studied. Of the liners investigated, polyethylene, aluminum foil, plastic-wax saturated pulpboard, and red rubber liners were found to be the most effective moisture vapor barriers, particularly when used in metal closures.
ackaging pharmaceutical products.
Ta specific product is of great importance in the drug and chemical industry. Some of the factors to be considered are the type of product to be packaged, its hygroscopicity, and product reaction with the cap and/or the cap liner.
Although the liner may be effective and stable, the material of the cap may react with the product being packaged. This is particularly true of closures for liquid preparations.
๐ SIMILAR VOLUMES
Six derivatives of o-phenylenediamine-bis-dithiocarbamic acid and six derivatives of 4-chloro-o-phenylenediamine-bis-dithiocarbamic acid were prepared. Twelve new compounds, undecylenic acid and ethanol were screened for antimycotic activity against M. Gypseum, M . a n i s , T. Rubrum, and T. Mentag