specification
appearance                             novisible mechanicalimpurity                               novisible mechanicalimpurity                                                 novisible mechanical impurity
nitrogen (n)content% ≥         21.0                                 21.0                                  20.5
moisture (h2o),% ≤              0.2                                   0.5                                 1.5
free acidity(h2so4),%  ≤      0.03                                 0.05                                  0.20
fe content, %  ≤                      0.007                               -                                       -
as content,%  ≤                     0.00005                           -                                       -
heavy metal( pb)content,% ≤                                        0.005                                - -
insoluble matter %   ≤            0.01                                 -                                       -
product name  ammonium sulphate
other names   ammonium sulfate,as,soa, amsulf
(mf)molecular formula  (nh4)2so4
molecular weight      132.14
cas no.          7783-20-2
einecs no.   231-984-1
hs code           3102210000
features
easily soluble in water, insoluble in alcohol, acetone, can react with alkalis and release the ammonia gas.
hygroscopic, easily become caking after moisture absorption
odor                slight odor of ammonia
ph                   5.5 (0.1m aqueous solution) 
melting point  235 - 280c (455 - 536f) decomposes
stability
stable under ordinary conditions of use and storage. maintain at temperatures below 513c (955f). 
color     range from white to brown:
white or off white, snow white colorless rhombic crystals
light grey, yellowish or yellowish-brown as of different impurities
appearance     takes the forms of powder, granules or crystals
application fields and standards, based ongb535                                                 
parameters                              industrialpremiumgrade                                       industrialfirstgrade                                                 agriculturegrade
application:
in agriculture: 
as well all know, nitrogen, phosphorus and potassium are the three primary nutrients very important 
to plant health. they are called macronutrients, short for n p and k.
ammonium sulphate is particularly suitable for alkaline oil, more stable than ammonium nitrate and ammonium carbonate. of the nitrogen fertilizers, ammonium sulphate has the most acidifying effect on the soil.in the soil, the ammonium ion is released and forms a small amount ich lowering the ph balance of the soil, while contributing essential nitrogen nutrient for plant growth. once it is dissolved in water, the nitrogen in form of ammonium will be absorbed into the root system of plants.when used in the field, all efforts must be made to avoid exposure to moist air. keep trucks tarped, spreaders covered, empty drills, airseeders and spreaders overnight or between jobs.
  advantage:
fast release, quick acting;
more efficiency than urea, ammonium bicarbonate, ammonium chloride, ammonium nitrate;
can be readily blended with other fertilizers. it has the desirable agronomic features of being a source of both nitrogen and sulphur.the ammonium sulphate could be also used as the raw material of npk, the water soluble fertilizer, drip irrigation fertilizer, and so on.
4.ammonium sulphate can make crops thrive and improve fruit quality and yield and strengthen resistance to disaster,can be used for common soil and plant in basic fertilizer, additional fertilizer and seed manure. suitable for the rice seedling, paddy fields, wheat and grain, the growth of tea, vegetables, fruit trees,hay grass, lawns,turf and other plants.
other fields:
        raw material in chemicals, dying and pharmaceuticals; 
        dough regulators, yeast nutrition or breads in food industry;
        flame proofing of paper, wood and textiles;
        auxiliary material in the practice board and cellulose industry;
        decalcification agent in leather industry;
        beer brew industry;
        and so on.
note: when ammonium sulfate is used as fertilizer in agriculture,it is not necessary to check the content of fe, as, heavy metal andwater insoluble matter.
packaging & shipping
packaging & delivery  
packaging detail:      1.packed in plastic-lined plastic woven bags of 50 kg net each, 25mtper 20fcl. 2. packed in plastic-lined plastic woven jumbo bags of1100 kg net each, 22mt per 20fcl 3. according to the customer'srequirement
delivery detail:  within7~10 days after order confirmation.
storage and transportation
ammonium sulphate should be stored in cool, dry, ventilatedwarehouse, avoid to be exposed in sunshine, rain, and hightemperature.
during the transportation: avoid shipment withacid, alkali stuff, prevent it from sunlight and rain anddo not damage the packing bags.

---

安阳市重信农资有限公司
刘刘
15637293263
钢花路北段