Kaliumsulfat

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Warnung

• Gefahrenhinweise

  H302：Gesundheitsschädlich bei Verschlucken.

  H315：Verursacht Hautreizungen.

  H319：Verursacht schwere Augenreizung.

  H335：Kann die Atemwege reizen.

• Sicherheit

  P260：Dampf/Aerosol/Nebel nicht einatmen.

  P262：Nicht in die Augen, auf die Haut oder auf die Kleidung gelangen lassen.

  P305+P351+P338：BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach Möglichkeit entfernen. Weiter spülen.

Potassium sulfate Chemische Eigenschaften,Einsatz,Produktion Methoden

• ERSCHEINUNGSBILD

  FARBLOSE BIS WEISSE KRISTALLE.

• CHEMISCHE GEFAHREN

  Zersetzung beim Erhitzen unter Bildung von Schwefeloxiden.

• ARBEITSPLATZGRENZWERTE

  TLV nicht festgelegt (ACGIH 2005).
  MAK nicht festgelegt (DFG 2005).
  

• INHALATIONSGEFAHREN

  Verdampfen bei 20°C vernachlässigbar; eine belästigende Partikelkonzentration in der Luft kann jedoch beim Dispergieren schnell erreicht werden, besonders als Pulver.

• WIRKUNGEN BEI KURZZEITEXPOSITION

  WIRKUNGEN BEI KURZZEITEXPOSITION:
  Die Substanz reizt leicht die Augen, die Haut und die Atemwege.

• LECKAGE

  Verschüttetes Material in Behältern sammeln. Persönliche Schutzausrüstung: Atemschutzgerät, P1-Filter für inerte Partikel.

• S-Sätze Betriebsanweisung:

  S22:Staub nicht einatmen.
  S24/25:Berührung mit den Augen und der Haut vermeiden.

• Beschreibung

  Potassium sulfate (K2SO4) is a kind of chemical compounds that is commonly used in agriculture. The dominant application of potassium sulfate is as a fertilizer, which is commonly applied to offer both potassium and sulfur, thus improving the quality and yield of crops growing in soils that lack an adequate supply of this essential elements. Besides, the crude potassium sulfate is sometimes employed in the production of glass. It also has applications in other industries, which is used as a flash reducer in artillery propellant charges and as an alternative blast media similar to soda in the process of soda blasting.
  
  potassium sulfate powder

• Chemische Eigenschaften

  Potassium sulfate,K2804, also known as salt of Lemery and arcanite, is a colorless crystalline solid that melts at 1072°C(1960 OF). It is soluble in water,but insoluble in alcohol. Potassium sulfate is used in manufacturing glass, aluminum, fertilizers, and in medicine.

• Chemische Eigenschaften

  Potassium sulfate, sulfate of potash, K2SO4, white solid, soluble. Common constituent of potassium salt minerals.

• Physikalische Eigenschaften

  Colorless or white crystals or white granules or powder; rhombohedral structure; bitter taste; density 2.66 g/cm³; melts at 1,069°C; vaporizes at 1,689°C; moderately soluble in water, 12 g/100mL at 25°C and 24g/100mL at 100°C; slightly soluble in glycerol; insoluble in alcohol, acetone, and carbon disulfide.

• Occurrence

  Potassium and sodium sulfates and their double sulfates with calcium and magnesium occur naturally in various salt lakes. Potassium sulfate also occurs in certain volcanic lava. Its double salt with magnesium occurs in nature, as the mineral langbeinite.
  Potassium sulfate is used in fertilizers as a source of potassium and sulfur, both of which are essential elements for plant growth. Either in sim-ple form or as a double salt with magnesium sulfate, potassium sulfate is one of the most widely consumed potassium salts in agricultural applications. It is preferred over potassium chloride for certain types of crops; such as, tobac-co, citrus, and other chloride-sensitive crops. Some other applications include making gypsum cements; to make potassium alum; in the analysis of Kjeldahl nitrogen; and in medicine.

• Verwenden

  Potassium Sulfate is a flavoring agent that occurs naturally, consisting of colorless or white crystals or crystalline powder having a bitter, saline taste. it is prepared by the neutralization of sulfuric acid with potassium hydroxide or potassium carbonate.

• Verwenden

  potassium sulfate is a reagent in cosmetics. Potassium sulfate is an inorganic salt with a primary function as a viscosity-increasing agent.

• Verwenden

  Technical grades are used in fertilizers for manufacture of potassium alum, potassium carbonate and glass; the reagent grade is used in the Kjeldahl determination of nitrogen.

• Vorbereitung Methode

  Potassium sulfate is produced by various methods, selection of process depending on availability and cost of raw materials.
  The salt may be obtained from its naturally occurring mineral, langbeinite,K₂SO₄?2MgSO₄. The ore first is crushed and washed with water to separate sodium chloride. After that, magnetite is separated from the washed langbei-nite by magnetic separation. After the separation of these two major impuri-ties, the purified double salt is treated with an aqueous solution of potassium chloride to obtain potassium sulfate:
  K₂SO₄?2MgSO₄ + 4KCl →3K₂SO₄+ 2MgCl₂
  The solution is filtered to remove insoluble residues and the products are separated from their aqueous mixture by crystallization.
  Potassium sulfate also is produced from the mineral kieserite, MgSO4?H₂O by treatment with potassium chloride. The intermediate double salt obtained reacts further with potassium chloride to form potassium sulfate:MgSO₄?H₂O + 2KCl + 4H₂O →K₂SO₄?MgSO₄?6H₂O + MgCl₂
  K₂SO₄?MgSO₄?6H₂O + 2KCl →2K₂SO₄+ MgCl₂
  Potassium sulfate is separated from the more soluble magnesium chloride by crystallization.
  Also, potassium sulfate can be made by two other processes in which no naturally occurring mineral is employed. In the Mannheim process, the salt is produced by action of sulfuric acid on potassium chloride:2KCl + H₂SO₄→K₂SO₄+ 2HCl
  In Hargreaves process, which is a slight variation of the Mannheim method, potassium sulfate is made by heating a mixture of potassium chlo-ride, sulfur dioxide, air and water:4KCl + 2SO₂+ 2H₂O + o₂→2K₂SO₄+ 4HCl.

• Definition

  Potassium sulfate is a potassium salt and an inorganic potassium salt. It is a white crystalline powder, K2SO4, soluble inwater and insoluble in ethanol;rhombic or hexagonal; r.d. 2.66; m.p.1069°C. It occurs naturally assch nite (Strassfurt deposits) and inlake brines, from which it is separatedby fractional crystallization. Ithas also been produced by the Hargreavesprocess, which involves theoxidation of potassium chloride withsulphuric acid. In the laboratory itmay be obtained by the reaction ofeither potassium hydroxide or potassiumcarbonate with sulphuric acid.Potassium sulphate is used in cements,in glass manufacture, as a food additive, and as a fertilizer(source of K+) for chloride-sensitiveplants, such as tobacco and citrus.

• Allgemeine Beschreibung

  Potassium sulfate is an inorganic salt that can be prepared by reacting phosphogypsum and potassium chloride. It forms needlelike mullite particles on heating with aluminum sulfate (Al₂(SO₄)₃) and silicon dioxide (SiO₂). Its application to the soil has been reported to minimize the bronzing of rice plants. Its surface integration growth kinetics has been obtained in the temperature range of 20-50°C. The theoretical heat capacity curve of potassium sulfate in vapor phase has been obtained.

• Flammability and Explosibility

  Non flammable

• Sicherheitsprofil

  Moderately toxic to humans by ingestion. Moderately toxic experimentally by subcutaneous route. Swallowing large doses causes severe gastrointestinal tract effects. When heated to decomposition it emits toxic fumes of K2O and SOx. See also SULFATES.

• läuterung methode

  Potassium sulfate [7778-80-5] M 174.3, m 1069o, d 4 2.67 It crystallised from distilled water (4mL/g at 20o; 8mL/g at 100o) between 100o and 0o.

• Einzelnachweise

  https://en.wikipedia.org/wiki/Potassium_sulfate
  http://www.cropnutrition.com/potassium-sulfate
  http://study.com/academy/lesson/what-is-potassium-sulfate-structure-uses-formula.html

Potassium sulfate Upstream-Materialien And Downstream Produkte

Kaliumsulfat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global(512)Suppliers

7778-80-5, Potassium sulfate Verwandte Suche: