Iron-rich sedimentary rocks are sedimentary rocks which contain 15% or more iron.However, most sedimentary rocks contain iron in varying degrees.The majority of these rocks were deposited during specific geologic time periods: The Precambrian (3800 to 570 million years ago), the early Paleozoic (570 to 410 million years ago), and the middle to late Mesozoic (205 to 66 million years ago).ron-rich sedimentary rocks are sedimentary rocks which contain 15% or more iron.
* A surfactant. * Also known as Sodium Lauryl Phenyl Sulfonate. Functions: Sodium Dodecylbenzenesulfonate is comprised of substituted aromatic compounds and used as a surfactant in a variety of cosmetics and personal care products, primarily cleansing products such as bath soaps and shampoos. It is considered a linear alkylbenzene sulfonate (LAS), or specific classification of surfactant that is known to be especially soluble and effective at low concentrations.
Sulfasalazine (brand name Azulfidine in the U.S. , Salazopyrin and Sulazine in Europe and Hong Kong) was developed in the 1950s specifically to treat rheumatoid arthritis.It was believed at the time that bacterial infections were the cause of rheumatoid arthritis.Sulfasalazine is a sulfa drug, a derivative of mesalazine, and is formed by combining sulfapyridine and salicylate with an azo coupling.he use of sulfasalazine in inflammatory bowel disease has declined due mainly to the fact that it yields the metabolite sulfapyridine which gives rise to side-effects such as agranulocytosis and hypospermia.