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Kaliumsulfat Produkt Beschreibung

Potassium sulfate  Struktur
7778-80-5
CAS-Nr.
7778-80-5
Bezeichnung:
Kaliumsulfat
Englisch Name:
Potassium sulfate
Synonyma:
sop;K2SO4;231-915-5;WATER R PHE;Kaliumsulfat;Kalii sulfas;Glazier's salt;KJELTABS IB 61;Salt of leMery;salpolychrestum
CBNumber:
CB9854321
Summenformel:
K2O4S
Molgewicht:
174.2592
MOL-Datei:
7778-80-5.mol

Kaliumsulfat Eigenschaften

Schmelzpunkt:
1067°C
Siedepunkt:
1689°C
Dichte
2.66
Flammpunkt:
1689°C
storage temp. 
Store at RT.
Löslichkeit
H2O: 0.5 M at 20 °C, clear, colorless
Aggregatzustand
Very Fine Crystals or Powder
Farbe
White
Wichte
2.662
Geruch (Odor)
Odorless
PH
5.5-7.5 (25℃, 0.5M in H2O)
Säure-Base-Indikators(pH-Indikatoren)
~7
Wasserlöslichkeit
110 g/L (20 ºC)
maximale Wellenlänge (λmax)
λ: 260 nm Amax: 0.01
λ: 280 nm Amax: 0.01
Merck 
14,7674
Stabilität:
Stable.
InChIKey
OTYBMLCTZGSZBG-UHFFFAOYSA-L
CAS Datenbank
7778-80-5(CAS DataBase Reference)
NIST chemische Informationen
Potassium sulfate(7778-80-5)
EPA chemische Informationen
Potassium sulfate (7778-80-5)

Sicherheit

S-Sätze: 22-24/25
WGK Germany  1
RTECS-Nr. TT5900000
TSCA  Yes
HS Code  31043000
Giftige Stoffe Daten 7778-80-5(Hazardous Substances Data)
Toxizität LD50 orally in Rabbit: 6600 mg/kg

Kaliumsulfat 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
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

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.

Verwenden

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

Definition

A white crystallinepowder, 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 afood additive, and as a fertilizer(source of K+) for chloride-sensitiveplants, such as tobacco and citrus.

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.

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

Kaliumsulfat Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Kaliumsulfat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 271)Lieferanten
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7778-80-5(Kaliumsulfat)Verwandte Suche:


  • POTASSIUM SULFATE ANHY LOW NIT
  • Sulfuric acid potassium salt (1:2)
  • POTASSIUM SULFATE POWDER 99+% A.C.S.&
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  • POTASSIUM SULFATE R. G., REAG. ACS, REAG. ISO, REAG. PH.
  • POTASSIUM SULFATE PLANT CELL CULTURE*TES TED
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  • Arcanum duplicatum
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  • K2SO4
  • kaliumsulphuricum
  • Potassium sulfate, alpha
  • potassiumsulfate(2:1)
  • FISHERTAB ST-35 KJELDAHL TABLETS
  • FISHERTAB ST-AUTO KJELDAHL TABLETS
  • KELMATE(R) KJELDAHL DIGESTION MIXTURE
  • KELMATE(R) KJELDAHL DIGESTION MIXTURE CT-37
  • KELMATE(R) KJELDAHL DIGESTION MIXTURE MT-37
  • KELMATE(R) KJELDAHL DIGESTION MIXTURE ST-35
  • KELMATE(R) KJELDAHL DIGESTION MIXTURE ST-AUTO
  • KELMATE(R) KJELDAHL DIGESTION MIXTURE TT-35
  • KELMATE(R) KJELDAHL DIGESTION MIXTURE TT-50
  • KELMATE(R) N KJELDAHL DIGESTION MIXTURE NO 100
  • KELMATE(R) N KJELDAHL DIGESTION MIXTURE NO 200
  • KELMATE(R) N KJELDAHL DIGESTION MIXTURE NO 210
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  • KELMATE(R) N KJELDAHL DIGESTION MIXTURE NO 600
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  • KELMATE(R) NT KJELDAHL DIGESTION MIXTURE, NO 710
  • KELMATE(R) NT KJELDAHL DIGESTION MIXTURE NO 810
  • KJELTAB CATALYSTS
  • KJELTABS IB 61
  • POTASSIUM SULFATE ANHYDROUS POWDER
  • POTASSIUM SULPHATE extrapure AR
  • Potassium Sulfate, granular
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  • Kalii sulfas
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  • Potassium Sulfate, Powder, Reagent
  • POTASSIUM SULFATE, 99+%, FOR ANALYSIS ACS
  • Potassium sulfate, anhydrous, granular, for analysis
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  • Potassium sulfate(VI)
  • Potassium sulfate, 99.995% trace metals basis
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