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Potassium sulfate

Product Name
Potassium sulfate
CAS No.
7778-80-5
Chemical Name
Potassium sulfate
Synonyms
sop;K2SO4;231-915-5;WATER R PHE;Kaliumsulfat;Potassium in;Kalii sulfas;Glazier's salt;KJELTABS IB 61;Salt of leMery
CBNumber
CB9854321
Molecular Formula
K2O4S
Formula Weight
174.2592
MOL File
7778-80-5.mol
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Potassium sulfate Property

Melting point:
1067°C
Boiling point:
1689°C
Density 
2.66
Flash point:
1689°C
storage temp. 
Store at RT.
solubility 
H2O: 0.5 M at 20 °C, clear, colorless
form 
Very Fine Crystals or Powder
color 
White
Specific Gravity
2.662
Odor
Odorless
PH
5.5-7.5 (25℃, 0.5M in H2O)
PH Range
~7
Water Solubility 
110 g/L (20 ºC)
λmax
λ: 260 nm Amax: 0.01
λ: 280 nm Amax: 0.01
Merck 
14,7674
Stability:
Stable.
InChIKey
OTYBMLCTZGSZBG-UHFFFAOYSA-L
CAS DataBase Reference
7778-80-5(CAS DataBase Reference)
NIST Chemistry Reference
Potassium sulfate(7778-80-5)
EPA Substance Registry System
Potassium sulfate (7778-80-5)
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Safety

Safety Statements 
22-24/25
WGK Germany 
1
RTECS 
TT5900000
TSCA 
Yes
HS Code 
31043000
Hazardous Substances Data
7778-80-5(Hazardous Substances Data)
Toxicity
LD50 orally in Rabbit: 6600 mg/kg
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Hazard and Precautionary Statements (GHS)

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
1.05153
Product name
Potassium sulfate
Purity
for analysis EMSURE? ACS,ISO,Reag. Ph Eur
Packaging
500 g
Price
$81.86
Updated
2021/03/22
Sigma-Aldrich
Product number
12658
Product name
Potassium sulfate
Purity
meets analytical specification of Ph. Eur., 99-101%
Packaging
1kg
Price
$112
Updated
2021/03/22
Sigma-Aldrich
Product number
1.05153
Product name
Potassium sulfate
Purity
for analysis EMSURE? ACS,ISO,Reag. Ph Eur
Packaging
1 kg
Price
$112.85
Updated
2021/03/22
Sigma-Aldrich
Product number
12658
Product name
Potassium sulfate
Purity
meets analytical specification of Ph. Eur., 99-101%
Packaging
6x1kg
Price
$359
Updated
2020/08/18
Sigma-Aldrich
Product number
1.05153
Product name
Potassium sulfate
Purity
for analysis EMSURE? ACS,ISO,Reag. Ph Eur
Packaging
5 kg
Price
$384.8
Updated
2021/03/22
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Potassium sulfate Chemical Properties,Usage,Production

Description

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

Chemical Properties

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.

Chemical Properties

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

Physical properties

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.

Uses

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.

Uses

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

Uses

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.

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.

Production Methods

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.

Safety Profile

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.

Purification Methods

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.

References

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

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Potassium sulfate Suppliers

Shanghai Aladdin Bio-Chem Technology Co.,LTD
Tel
021-20337333-801
Fax
021-50323701
Email
market@aladdin-e.com
Country
China
ProdList
24980
Advantage
65
Lianyungang Kexin Chemical Co., Ltd.
Tel
518-85110578-
Email
sales3257@jskolod.com
Country
China
ProdList
99
Advantage
58
J & K SCIENTIFIC LTD.
Tel
010-82848833- ;010-82848833-
Fax
86-10-82849933
Email
jkinfo@jkchemical.com;market6@jkchemical.com
Country
China
ProdList
96815
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76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
21-61259100-
Fax
86-21-61259102
Email
sh@meryer.com
Country
China
ProdList
40264
Advantage
62
Alfa Aesar
Tel
400-610-6006; 021-67582000
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30159
Advantage
84
Energy Chemical
Tel
021-58432009-
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
42923
Advantage
61
Accela ChemBio Co.,Ltd.
Tel
400-0665055
Fax
021-50795055
Email
sales@accelachem.com
Country
China
ProdList
11499
Advantage
64
Shanghai Hanhong Scientific Co.,Ltd.
Tel
021-54306202- ; ;
Fax
+86-21-64545202
Email
jerry.ma@hanhonggroup.com;jerry.ma@hanhonggroup.com;jerry.ma@hanhonggroup.com
Country
China
ProdList
43255
Advantage
64
Chengdu XiYa Chemical Technology Co., Ltd.
Tel
;
Fax
0539-6365991
Email
sale@xiyashiji.com;3007716753@qq.com
Country
China
ProdList
10578
Advantage
57
BEST-REAGENT
Tel
400-1166-196;028-84555506- ;028-84555506-
Email
cdhxsj@163.com;1955352637@qq.com;cdhxsj@163.com
Country
China
ProdList
11718
Advantage
57
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View Lastest Price from Potassium sulfate manufacturers

Zhuozhou Wenxi import and Export Co., Ltd
Product
Potassium sulfate 7778-80-5
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-07-10
Zhuozhou Wenxi import and Export Co., Ltd
Product
Potassium sulfate 7778-80-5
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-07-09
Zhuozhou Wenxi import and Export Co., Ltd
Product
Potassium sulfate 7778-80-5
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-06-26

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