Monday, March 3, 2014
Interesting Knowledge About Ferric Sulfate
Ferric sulfate is a kind of yellow crystalline solids or a grayish-white powders with Molecular Formula: Fe2O12S3 and Molecular Weight:399.86. It is slightly soluble in Water at room temperature. The other basic properties of this chemical are: Density:3.097 g/cm3; Boiling Point: 330 C at 760 mmHg; Melting Point:480 C; EINECS:233-072-9; CAS Registry Number: 10028-22-5. It is used in many different municipal and industrial applications. In water and wastewater treatment operations, it is used as coagulants or flocculants for water clarification, odor control to minimize hydrogen sulfide release, for phosphorus removal, and as a sludge thickening, conditioning and dewatering agent. Ferric Sulfate(CAS NO:10028-22-5) is classified as a Class 8 Corrosive Dangerous Good and Corrosive (C) Hazardous Substance. It has a pH of Liquid Ferric Sulfate is a red-brown aqueous solution that is typically sold as a 50% or 60% strength solution,on a dry basis. Based on ferric iron (Fe+3) contents of 10% and 12% respectively for the two concentrations of liquid ferric sulfate, the formula for dry ferric sulfate would be Fe2(SO4)3 8.8H2O. The maximum concentration as ferric iron is approximately 13% in commercial liquid products. The ferric ion (Fe3+) reacts with hydroxy groups present due to alkalinity, lime, caustic, soda ash etc to form floc particles that incorporate non-settleable solids. Also, the charge on colloidal particles and dissolved organics can be neutralised to allow particle agglomeration and removal.It also removes heavy metals such as arsenic, chromium, selenium, lead etc and phosphate. It is a low cost iron salt. If the dose efficiency is similar, ferric sulfate will usually be more cost effective than other coagulant salts. Ferric Sulfate can work better over a wider pH range than alum, so pH correction is not critical to good performance. Ferric Sulfate contains free acid which can make it better for wastewater treatment where low pHs are required (i.e. to remove fats and oils or high colour) it is also less corrosive to most metals and fittings than ferric chloride. Ferric sulfate(CAS NO:10028-22-5) and jarosite have been detected by the two martian rovers Spirit and Opportunity. These substances are indicative of strongly oxidizing conditions prevailing at the surface of Mars. In May 2009, the Spirit rover became stuck when it drove over a patch of soft ferric sulfate that had been hidden under a veneer of normal-looking soil. Because iron sulfate has very little cohesion, the rover's wheels could not gain sufficient traction to pull the body of the rover out of the iron sulfate patch. Multiple techniques were attempted to extricate the rover, but the wheels eventually sunk so deeply into it that the body of the rover came to rest on the martian surface, preventing the wheels from exerting any force on the material below them. As the JPL team failed to recover the mobility of Spirit, it signified the end of the journey for the rover. Learning more information about Ferric Sulfate, please access to guidechem. Guidechem Chemical Network providing the most complete information of the chemical industry.1> About the Author Andy Hamary is the freelance writer for e-commerce website in the chemistry. Guidechem.com is just a place for you to look for some chemicals. Our guidechem provide the most convenient conditions for the international buyers and let these leads benefit all the business people. Guidechem chemical B2B network provides information on china and global chemical market quotation and relative chemical Information. Guidechem Chemical Network providing the most complete information of the chemical industry.