- �. Finely divided gypsum is added to an ammonium carbonate solution. Finely divided gypsum is added to an ammonium carbonate solution. Elle avoisine 5 millions de tonnes exprimée en azote. Ammonium sulfate (American English and international scientific usage; ammonium sulphate in British English); (NH 4) 2 SO 4, is an inorganic salt with a number of commercial uses. Ammonium sulfate | (NH4)2SO4 or H8N2O4S | CID 6097028 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. Wiki User Answered . For example, addition of barium chloride, precipitates out barium sulfate. BS4500000. Heating at higher temperatures results in decomposition into ammonia, nitrogen, sulfur dioxide, and water.[17]. Chemical Name Ammonium sulfate Structural Formula (NH4)2SO4 SUMMARY CONCLUSIONS OF THE SIAR Human Health Fertility and developmental toxicity studies with ammonium sulfate were not available. [16], Ammonium sulfate decomposes upon heating above 250 °C, first forming ammonium bisulfate. La toxicité chronique, concernant l'exposition à de faibles doses répétées sur des organes cibles, semble plus redoutable que la toxicité aiguë. - McGraw-Hill, 2003. 4. La chaleur produite par la réaction évapore toute l'eau de l'acide en laissant le sel anhydre. CopyCopied, BFNBIHQBYMNNAN-UHFFFAOYSA-N In January 2010, these substances were also banned in Afghanistan for the same reason. - Wiley-interscience, 2004. - �.1, ��.1. 219-220, ���������� ������������. L'action d'une base forte décompose le composé ionique sec. C'est aussi un inhibiteur de corrosion, un régulateur antistatique utilisé dans les revêtements modernes, un agent d'oxydo-réduction en métallurgie, un agent électrochimique, par exemple en galvanoplastie, un agent du tannage dans l'industrie des cuirs par sa simple proximité de composition avec la gamme des aluns. 242, Milne G.W.A. - pp. The formula of ammonium sulphate is (NH4)2SO4, showing that each formula mass contains one sulphur atom. The most common use is as a soil fertilizer. - Wiley-Interscience, 2005. 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. Un article de Wikipédia, l'encyclopédie libre. C'est pourquoi les sulfates d'ammonium sont conservés entre 2 °C et 8 °C. The filtrate on evaporation yields ammonium chloride. Il existe dans la nature, sous le nom minéralogique de mascagnite. ���2�� ��It�w����ݣ5XF�A�^̾�+/J�ԃ u�ĕ9�˽�Aj�����0vq��{o�k_���ʯ&�Ә�g����ƒ�1�; When chilled into the ferrorelectric state, the symmetry of the crystal changes to space group Pna21. Ce composé de l'azote peut exacerber l'efficacité de certains herbicides [5]. In aqueous solution the reactions are those of NH4+ and SO4−2 ions. Heating at higher temperatures results in decomposition into ammonia, nitrogen, sulfur dioxide, and water.[17]. [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. La production mondiale serait estimée à plus de 22 millions de tonnes vers 2014. 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. ������� ���������� ����������. Il intervient aussi couramment dans les méthodes d'analyses cristallographiques des acides nucléiques et des protéines. Molecular Formula H 8 N 2 O 4 S; Average mass 132.139 Da; Monoisotopic mass 132.020477 Da; ChemSpider ID 22944; More details: Systematic name. - pp. [18], In November 2009, a ban on ammonium sulfate, ammonium nitrate and calcium ammonium nitrate fertilizers was imposed in the former Malakand Division—comprising the Upper Dir, Lower Dir, Swat, Chitral and Malakand districts of the North West Frontier Province (NWFP) of Pakistan, by the NWFP government, following reports that they were used by militants to make explosives. Airborne particles of evaporated ammonium sulfate comprise approximately 30% of fine particulate pollution worldwide. 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. La dernière modification de cette page a été faite le 13 mai 2020 à 20:23. Double metal sulfates include ammonium cobaltous sulfate, ferrous diammonium sulfate, ammonium nickel sulfate which are known as Tutton's salts and ammonium ceric sulfate. - pp. 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). Ammonium sulfate. With trivalent metal ions, alums such as ferric ammonium sulfate are formed. Chauffé en tube à essai à l'air, le sulfate d'ammonium se décompose à partir de 150 °C en bisulfite d'ammonium acide et en gaz ammoniac qui se dégage. Ammonium sulfate (American English and international scientific usage; ammonium sulphate in British English); (NH4)2SO4, is an inorganic salt with a number of commercial uses. 셻aJ�n��{>~� �K���$ڝ��$B�y���>@/�U�����x踱L�vݵL\'� ��}Zn�����f��&t When chilled into the ferrorelectric state, the symmetry of the crystal changes to space group Pna21. The molecular formula of ammonium sulfate (NH 4) 2 S0 4 and the molecular weight is 132.14, so that saturation occurs at 541.8 g/L at 25 o C, 536.49 g/L at 20 o C, 524.6 g/L at 10 o C, 519.1 g/L at 4 o C and 515.35 g/L at 0 o C. :�P�"�J+’�C0o��劕���l��!�(ڗn�-�c���7[ W��*6�wR��X�tS.�V��ߙ�\�|��L^�C+����Cw7+��~��1ljo{.���{�_�L��Ǝ��t]W�c*4b��.�޸�Tm�}�?���%�qMĘ}, 0k]v$�ӽ#龤�4��u�fy�u��c�N���҂wǾO�(���A�6���EЕ&G|Q`�E�*t�Lk�Q�=/�cZO:q�Nf�I�١��ճ*�p���+�Ηx�M���:`��;����ٕ�A&�,j��h�F#�����R�O�TE�`����Q^�V��+L���+ �BI�H��ۦ��BX�)�l�/�"_�4_��E=ֶ!�}��o�`�'®nkB(�]dhMzb腗3�?�߷&�ץ ��"ɎꪲG�>�s��w����E�G~z�';��E���ЧˬQs����Ȉ^. 9, No. Le sulfate d'ammonium entre dans la composition d'engrais. 17 18 19. - �. It occurs in crystals with particle size that is variable, colored white to beige (IPNI 2012). A high-melting (decomposes above 280C) white solid which is very soluble in water (70.6 g/100 - 3ed., vol.1. Top Answer. CopyCopied, CSID:22944, http://www.chemspider.com/Chemical-Structure.22944.html (accessed 03:21, Nov 27, 2020) La chaleur produite par la réaction maintient quant à elle la température à 60 °C. Elle reste méconnue. Gardner's Commercially Important Chemicals. Ce produit n'est pas contrôlé selon les critères de classification du SIMDUT. L'eau et l'azote peuvent également se reformer à hautes températures. L'agriculture utiliserait la moitié de la production mondiale sous forme d'engrais, mais encore 40% sous forme de produits dérivés ou d'adjuvants.