
Ammonium sulphate
CAS No: 7783-20-2
EINECS No.: 231-984-1
Molecular formula: (NH4)2SO4
Purity: 99% min
Nitrogen content: 21% min
Appearance: White crystal /granular
Ammonium sulfate, (NH4)2SO4, is an inorganic with a number of commercial uses. The most common use is as a soil fertilizer.
It contains 21% nitrogen as , and 24% sulfur as . In fertilizer the purpose of the sulfate is to reduce the soil PH .
It is used largely as an artificial for . In the soil the sulfate ion is released and forms bisulfate, lowering the balance of the (as do other sulfate compounds such as ),
while contributing essential for plant growth.
It is also used as an agricultural spray for water soluble , , and .
There it functions to bind iron and calcium cations that are present in both well water and plant cells. It is particularly effective as an adjuvant for 2,4-D (amine), glyphosate, and glufosinate herbicides.
Ammonium sulphate Application:
1. In agriculture, used for nitrogen fertilizer.
It is a kind of action fertilizerwhich can make crops thrive and improve fruit quality and yield and strengthenresistance to disaster,
can be used for common soil and plant in basic fertilizer Additionial fertilizer and seed manure.
It can be suitable specially for soil withlack of sulfer, but for acid soil, ammonium sulfate needs to be applied with lime.
2. Raw material of making compound fertilizer.
3. In chemical industry, it is for raw material in making oxydol, ammonium-alum and
Ammonium chlorde.
4. In welding industry, used for welding agent.
5. In textile industry, used for fire retardant of textile fabrics
6. In electroplating industry, used for electrobath additive
7. Ammonium sulfate can be used for making refactory material
8. Catalyst in food coloring reddish brown
9. Nitrogen source culturing microzyme in making fresh yeast
10. Dyeing auxiliaries of acid dyes.
11. Deliming agent of leather.
12. Ammonium sulfate also can be used for beer making.
13. Chemical agent.
14. Storage battery making, etc.
Molecular formula
|
(NH4)2SO4
|
Molecular weight
|
132.13
|
Element Composition
|
If pure substance, nitrogen content is 21.21%, sulfer content is 24.26%.
|
Density
|
1.769g/cm3
|
Decomposition temperature
|
235 degrees centigrade
|
CAS No.
|
7783-20-2
|
H.S.code (customs code)
|
31022100
|
colour
|
white crystal
|
Physicalproperty
|
easy to dissolve in water and can not dissolve in alcohol, acetone, ammonia;
easy to become caking after moisture absorption.
|
Item
|
Index unit %
|
|
High class
|
First class
|
Qualified class
|
Apperance
|
White crystal,free from mechanical
impurities
|
Free from
mechanical
impurities
|
free from visible mechanical
impurities
|
Nitrogen(N, as dry basis) more than
|
21.0
|
21.0
|
20.5
|
Moisture(H2O) less than
|
0.2
|
0.3
|
1.0
|
Free acid(H2SO4) less than
|
0.03
|
0.05
|
0.20
|
Iron(Fe)less than
|
0.007
|
—
|
—
|
Arsenic(As) less than
|
0.00005
|
—
|
—
|
Heavy metal(As Pb)less than
|
0.005
|
—
|
—
|
Water
insolubles less than
|
0.01
|
—
|
—
|

