L-1. La chaleur produite par la réaction évapore toute l'eau de l'acide en laissant le sel anhydre. An inorganic sulfate salt obtained by reaction of sulfuric acid with two equivalents of ammonia. With trivalent metal ions, alums such as ferric ammonium sulfate are formed. On produit également le sulfate d'ammonium à partir du gypse (sulfate de calcium dihydraté CaSO4, 2H2O) finement divisé qu'on ajoute à une solution de carbonate d'ammonium (NH4)2CO3 pour produire du carbonate de calcium CaCO3 qui précipite en laissant le sulfate d'ammonium en solution : Le sulfate d'ammonium existe à l'état naturel dans le minéral rare appelé mascagnite, par exemple dans les dépôts de fumerolles volcaniques. 1122-1132, ��������� �.�., ����� �.�. http://onlinelibrary.wiley.com/doi/10.1111/j.1365-3180.1984.tb00572.x/abstract, Présentation sur l'open Chemistry data base, Deux préparations faciles du sulfate d'ammonium en solution et la décomposition de sa poudre à la chaleur à ne pas imiter dans de si mauvaises conditions, Quelques chiffres fiables sur l'industrie des engrais, liste des principales adventices en France, Liste des espèces susceptibles d'occasionner des dégâts en France, Produit végétal traité avec un produit phytopharmaceutique, Directive cadre pour la protection des sols, Programme de maîtrise des pollutions d'origine agricole, Taxe générale sur les activités polluantes, https://fr.wikipedia.org/w/index.php?title=Sulfate_d%27ammonium&oldid=170828573, licence Creative Commons attribution, partage dans les mêmes conditions, comment citer les auteurs et mentionner la licence, cristaux incolores à l'état pur, blanc à gris, décomposition en tube scellé sans air vers, Dipyramidale Holoédrie orthorhombique classe de symétrie 2/m 2/m 2/m ; groupe d'espace Pnam, transparent à translucide, parfois opaque. Il intervient aussi couramment dans les méthodes d'analyses cristallographiques des acides nucléiques et des protéines. Wiki User Answered . g water at 0C; 103.8 g/100 g water at 100C), it is widely used as a fertilizer for alkaline soils. 228-234, ���������� �� �������������. Ammonium sulfate occurs naturally as the rare mineral mascagnite in volcanic fumaroles and due to coal fires on some dumps. In aqueous solution the reactions are those of NH4+ and SO4−2 ions. - New York: D. Van Nostrand Company, 1940. Cette matière suffisamment pure a des propriétés ferroélectriques en dessous d'une température de −49 °C car un réarrangement cristallin lui confère une autre symétrie, caractérisée par le groupe d'espace Pna21. A high-melting (decomposes above 280C) white solid which is very soluble in water (70.6 g/100 CopyCopied, Validated by Experts, Validated by Users, Non-Validated, Removed by Users, Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module. Gardner's Commercially Important Chemicals. 9, No. In aqueous solution the reactions are those of NH4+ and SO4−2 ions. As a salt of a strong acid (H2SO4) and weak base (NH3), its solution is acidic; pH of 0.1 M solution is 5.5. - pp. Heating at higher temperatures results in decomposition into ammonia, nitrogen, sulfur dioxide, and water.[17]. - McGraw-Hill, 2003. - 3ed., vol.1. For example, addition of barium chloride, precipitates out barium sulfate. - 11ed. When chilled into the ferrorelectric state, the symmetry of the crystal changes to space group Pna21. The ammonia produced has a pungent smell and is toxic. ���J@��.�osS�E[d%R���+U�p��ʒN*�u��������ȣ�M){ >� GdKG�n�zn����Fdh�t2�������d�$ D����p�TS����e=Y�� Ҳ'�=s�����U� ���υ�k�HFD*1�� b����R:0���li! H��W�r�� ��S�r� i.���ӎ$;�:��Zr/���V��p�8��i{Q K��d��E��D�[,p ����f������ ��ow���ADN��l5��r�߸��jp�y*�I\�u� f����fσ��ە:�_�e��/��K����D >��ѵe��������o�L����5L�~�팖z� - Wiley-Interscience, 2005. Airborne particles of evaporated ammonium sulfate comprise approximately 30% of fine particulate pollution worldwide. CopyCopied, BFNBIHQBYMNNAN-UHFFFAOYSA-N De l'acide sulfurique concentré est ajouté afin de maintenir l'acidité de la solution ainsi que la concentration de l'acide sulfurique du mélange. Ce composé de l'azote peut exacerber l'efficacité de certains herbicides [5]. Click to predict properties on the Chemicalize site, For medical information relating to Covid-19, please consult the, ACD/Labs Percepta Platform - PhysChem Module, Compounds with the same molecular formula, Search Google for structures with same skeleton, Soluble in water. - pp. - �. Le sulfate d'ammonium entre dans la composition d'engrais. %PDF-1.4 %���� La production mondiale serait estimée à plus de 22 millions de tonnes vers 2014. Also ammonium phosphate does not dissociate into ammonium ions and phosphate ions as you might expect. L'agriculture utiliserait la moitié de la production mondiale sous forme d'engrais, mais encore 40% sous forme de produits dérivés ou d'adjuvants. - pp. What is the balanced equation for Ammonium sulfate and potassium hydroxide are mixed together? : �����, 1977. - �. - pp. C'est pourquoi les sulfates d'ammonium sont conservés entre 2 °C et 8 °C. - Vol. At room temperature it crystallises in the orthorhombic system, with cell sizes of a = 7.729 Å, b = 10.560 Å, c = 5.951 Å. The filtrate on evaporation yields ammonium chloride. The most common use is as a soil fertilizer. Heating at higher temperatures results in decomposition into ammonia, nitrogen, sulfur dioxide, and water.[17]. Airborne particles of evaporated ammonium sulfate comprise approximately 30% of fine particulate pollution worldwide. La solution 0,1 M a un pH de 5,5. At room temperature it crystallises in the orthorhombic system, with cell sizes of a = 7.729 Å, b = 10.560 Å, c = 5.951 Å. Ce produit intermédiaire de l'industrie chimique est très employé dans l'industrie des colorants, dans l'industrie des surfactants ou tensio-actifs, mais aussi dans les industries du traitement de l'eau et comme additif de conservation ou de goût dans l'industrie alimentaire (pains, bières, vins). Chauffé dans des conditions thermiques drastiques, ce corps chimique se dégrade quasi-instantanément et émet des fumées très toxiques de SOx, NOx et d'ammoniac[3]. La dernière modification de cette page a été faite le 13 mai 2020 à 20:23. ammonium sulfate Physical appearance: colorless rhombic crystals Empirical formula (Hill's system for organic substances): H 8 N 2 O 4 S Structural formula as text: (NH4)2SO4 Molar/atomic mass: 132.13 Destruction point (°C): 218 Solubility (g/100 g of solvent): acetone: insoluble water: 70.1 … Calcium carbonate precipitates as a solid, leaving ammonium sulfate in the solution. - �.1, ��.1. Calcium carbonate precipitates as a solid, leaving ammonium sulfate in the solution. - �. L'action d'une base forte décompose le composé ionique sec. Finely divided gypsum is added to an ammonium carbonate solution. Le sulfate d'ammonium est un corps composé chimique ionique de formule (NH4)2SO4. - �. Il est insoluble dans l'éthanol, l'acétone, le sulfure de carbone et l'ammoniac liquide. [19], InChI=1S/2H3N.H2O4S/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4), InChI=1/2H3N.H2O4S/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4), Except where otherwise noted, data are given for materials in their, ASTM Standard Specification for Rubber Concentrates D 1076-06, Last edited on 16 November 2020, at 19:17, "Protein Precipitation Using Ammonium Sulfate", "Select Committee on GRAS Substances (SCOGS) Opinion: Ammonium sulfate", "Panera Bread › Menu & Nutrition › Nutrition Information Profile", "Official Subway Restaurants U.S. Products Ingredients Guide", "Feeding Ammonium Sulfate to Form Combined Chlorine Residual", Centers for Disease Control and Prevention, "Effects of Ammonium Phosphate and Sulfate on the Pyrolysis and Combustion of Cellulose", "PAKISTAN: 'Anti-terrorist' fertilizer ban hinders farmers", International Fertilizer Development Center, https://en.wikipedia.org/w/index.php?title=Ammonium_sulfate&oldid=989046063, Creative Commons Attribution-ShareAlike License, 235 to 280 °C (455 to 536 °F; 508 to 553 K) (decomposes), This page was last edited on 16 November 2020, at 19:17. 17 18 19. The filtrate on evaporation yields ammonium chloride. [15], Ammonium sulfate becomes ferroelectric at temperatures below -49.5 °C. Answer. [19], InChI=1S/2H3N.H2O4S/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4), InChI=1/2H3N.H2O4S/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4), Except where otherwise noted, data are given for materials in their, ASTM Standard Specification for Rubber Concentrates D 1076-06, "Protein Precipitation Using Ammonium Sulfate", "Select Committee on GRAS Substances (SCOGS) Opinion: Ammonium sulfate", "Panera Bread › Menu & Nutrition › Nutrition Information Profile", "Official Subway Restaurants U.S. Products Ingredients Guide", "Feeding Ammonium Sulfate to Form Combined Chlorine Residual", Centers for Disease Control and Prevention, "Effects of Ammonium Phosphate and Sulfate on the Pyrolysis and Combustion of Cellulose", "PAKISTAN: 'Anti-terrorist' fertilizer ban hinders farmers", International Fertilizer Development Center, https://en.wikipedia.org/w/index.php?title=Ammonium_sulfate&oldid=989046063, Articles with unsourced statements from October 2015, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Articles with unsourced statements from March 2012, Creative Commons Attribution-ShareAlike License, 235 to 280 °C (455 to 536 °F; 508 to 553 K) (decomposes), This page was last edited on 16 November 2020, at 19:17.

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