AMMONIUM SULFATE CAS NÂ°: 7783-20-2

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OECD SIDS AMMONIUM SULFATE 1. GENERAL INFORMATION ID: 7783-20-2 DATE: 18.04.2006 Flag: 26-MAY-2003 Type: Category: Flag: 04-FEB-1993 Type: Category: Flag: 26-MAY-2003 Type: Category: Flag: 26-MAY-2003 Type: Category: Flag: 26-MAY-2003 Type: Category: Flag: 26-MAY-2003 Type: Category: Flag: 26-MAY-2003 Type: Category: Flag: 26-MAY-2003 Type: Category: Flag: 26-MAY-2003 Type: Category: Flag: 26-MAY-2003 non confidential, Critical study for SIDS endpoint use Fertilizers non confidential, Critical study for SIDS endpoint use Flame retardants and fire preventing agents non confidential, Critical study for SIDS endpoint use Food/foodstuff additives non confidential, Critical study for SIDS endpoint use Laboratory chemicals non confidential, Critical study for SIDS endpoint use other: fermentation processes non confidential, Critical study for SIDS endpoint use other: nutrient for microorganisms in the production of enzymes non confidential, Critical study for SIDS endpoint use other: soldering liquid non confidential, Critical study for SIDS endpoint use other: use in electric dry cell batteries non confidential, Critical study for SIDS endpoint use other: water treatment non confidential, Critical study for SIDS endpoint 52 UNEP PUBLICATIONS
OECD SIDS AMMONIUM SULFATE 1. GENERAL INFORMATION ID: 7783-20-2 DATE: 18.04.2006 Type: use Remark: Ammonium sulfate is used predominantly as a fertilizer. As a fertilizer, (NH4)2SO4 has the advantage of adding sulfur to the soil as well as nitrogen, as it contains 21 % by weight nitrogen and 24 % by weight sulfur. Ammonium sulfate is also used in electric dry cell batteries, as a soldering liquid, as a fire retardant for fabrics and other products and as a source of certain ammonium chemicals. Other uses include water treatment, fermentation processes, fireproofing agents and leather tanning. Flag: non confidential, Critical study for SIDS endpoint 26-MAY-2003 (5) Type: use Remark: batteries-, photo- and glass-industry Flag: non confidential, Critical study for SIDS endpoint 11-MAY-2004 (6) 1.7.1 Detailed Use Pattern 1.7.2 Methods of Manufacture Orig. of Subst.: Synthesis Type: Production Remark: Flag: Large-scale industrial processes (of caprolactam) are, without exception, multistage processes in which ammonium sulfate and sometimes organic compounds are formed as byproducts. non confidential, Critical study for SIDS endpoint 04-APR-2002 (6) Orig. of Subst.: Synthesis Type: Production Remark: Ammonium sulfate was originally manufactured by using sulphuric acid to scrub by-product ammonia from coke-oven gas, and much is still produced in this manner. Most of the ammonium sulfate produced is now made by reaction between synthetic ammonia and sulfuric acid. 2NH3 + H2SO4 -> (NH4)2SO4 Where sulfur for sulfuric acid is at a premium, a process based on gypsum and carbon dioxide from combustion can be used: (NH4)2CO3 + CaSO4*2H2O -> CaCO3 + 2H2O + (NH4)2SO4 Water is removed by evaporation, and the product is crystallized to large, white uniform crystals. Anhydride (CaSO4) can also be used in this process. UNEP PUBLICATIONS 53
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AMMONIUM SULFATE CAS NÂ°: 7783-20-2

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