The pascal (symbol: Pa) is the SI derived unit of pressure used to quantify internal pressure, stress, Young's modulus and ultimate tensile strength. It is defined as one newton per square metre. It is named after the French polymath Blaise Pascal.
Wikipedia English The Free Encyclopedia. Organophosphate. An organophosphate (sometimes abbreviated OP) or phosphate ester is the general name for esters of phosphoric acid. Many of the most important biochemicals are organophosphates, including DNA and RNA, as well as many of the cofactors essential for life. Organophosphates are the basis of many insecticides, herbicides, and nerve agents.
Iron phosphate is a compound that combines phosphorous and oxygen with iron. It can kill slugs and snails when eaten. The toxicity of iron compounds like this depends on the amount of available iron. Iron is an essential mineral for plants and animals. It can be found in the environment, foods, and water.