Introductions of

Ammonium Sulfate

21-0-0 with 24% Sulfur

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Production

Since the advent of the Industrial Revolution and up to the 1960s, it was made from ammonia released during manufacturing coal gas or from coal coke used to produce steel by a reaction of sulfuric acid and heated ammonia. After being dried and screened to specific particle sizes and reduced dust, the crystal powder comes and easy cake. Currently, it is a by-product from steel plants or chemical plants, such as cyanuric acid, capro, acrylonitrile, sodium cyanide, MSG (Monosodium glutamate), MMA (methyl methacrylate), nickel/cobalt refinery etc. Normally, producing 1MT caprolactam will bring approximately 1.5MT ammonium sulphate as a coproduct.

Ammonium sulfate [(NH4)2 SO4] is one of the most popular inorganic nitrogen fertilizers in the world, effectually rapidly promoting the growth of grain. It was one of the first and most widely used nitrogen (N) fertilizers for crop production. Now it is more used than before. Both 21% nitrogen and 24% sulfur are especially valuable than urea for a number of agricultural applications.

Most fertilisers are now granular. They are free-flowing and less prone to caking and setting in storage. This makes them easier to store, handle and apply, more suited to modern application equipment, and more suitable for use in blends with one another. So ammonium sulphate in granular form is necessary, the benefits are

  1. Be able to blend with Phosphate and potash fertilizers) to make NPK.
  2. Spread by machine more accurately, uniformly spread by hands more easily.
  3. It can be spread evenly in windy weather.
  4. Significantly reduce caking, longer stay free flowing status.
  5. Avoid dust when loading or discharging.
  6. Slower release than powder, reduce waste. Improve the utilization rate of fertilizer.

Specification

ItemUnitCaprolactam GradeSteel GradeSteel Grade
TypeCrystallineFree-flowing Granular, Non-cakingPowder
AppearanceAchromatousWhite or off-whiteWhite or off-white
Odour (Distance 15cm)ImperceptibleImperceptibleImperceptible
Size (Granulometry)mm0-2 or 2-42 – 4.75mm (90% min)0 – 1
Nitrogen Content% min21.020.520.5
Purity% min9996.596.5
Sulphur% min2423.423.4
Moisture% max0.21.01.0
Free Acid% max0.030.200.20
Iron(Fe)% max0.007
Arsenic (As)% max0.00005
Heavy Metals% max0.005
Water-insoluble Matters% max0.01
HardnessNewton min30
CustomizeColour and formula
Based on GB535-1995 Standard

Characters

Physical and chemical indexes

100% water soluble (acidic). High to 700+g with 1000ml water. insoluble in acetone, alcohol and ether. Spontaneous Hygroscopic is 79% critical relative humidity (RH), consolidate into lumps.

  • CAS No.: 7783-20-2
  • ECHA InfoCard: 100.029.076
  • EC Number: 231-984-1
  • HS Code: 31022100
  • Molecular Formula: (NH4)2SO4 or H8N2O4S
  • Molecular Weight: 132.14 (molar mass is 132.14 g/mol)
  • Appearance: White or off-white crystal powder or granular
  • Density: 1.77 g/cm3 (20 °C)
  • Bulk Density – Loose: 0.9
  • Bulk Density – Tapped: 1.1
  • Size Guide Number (SGN): 120
  • Angle Of Repose: 33 Degrees
  • pH: 5.5 in 0.1M solution
  • Melting point: 235°C (280 °C decomposes)
  • Odor: No odor or slight ammonia

Synonyms: Ammonium sulfate (in American English and international scientific usage), Ammonium sulphate (in British English), sulfato de amonio, diammonium sulphate, sulfuric acid diammonium salt, Mascagnite, 硫安, 硫酸アンモニウム,硫铵,肥田粉.

Abbreviation: AS or AMS or SAM or SOA or AmSul, NPK 21-0-0 24S

Reference: Ammonium sulfate – Wikipedia

Applications

It has many essential functions, including

1. In Agriculture Use:

It contains the nutrition of supplemental N and S, fast release and quick act for growing plants (protein synthesis). It is one of the most common uses and most typical inorganic nitrogen sulfur fertilizer that can be directly used for a variety of soil and crops, also can be used as a kind of seed fertilizer, base fertilizer additional fertilizer and organic fertilizer.

It is particularly suitable for sulfur-deficient soils, low chlorine tolerance crops, row crops, and sulphur-philic crops (such as oilseed rape). It is prevalent in Japan, Southeast Asia, and northeast China where plant premium rice is. Very suitable for corn, wheat, grass, vegetables, and fruit trees also, effectually rapidly promotes the growth of most plants. The effect of increasing the yield of sulfur-loving crops such as citrus, soybean, sugarcane, beet, cotton, sweet potato, peanut and tea is more prominent. It is popular in Australia and New Zealand for intensively grazed irrigated nitrogen-fertilised pastures and forage crops.

The easiest way to measure fertilizer level is to check Electrical Conductivity (EC). EC is the measure of total dissolved salts in a solution, influencing a plant’s ability to absorb water. Monitoring salinity helps manage the effects of soluble salts on plant growth. In horticultural applications, such as grass, flowers, trees, shrubs, and hedges where in the pasture, lawns, turfs and garden care products, BUNNINGS is a Leading brand of Australian and New Zealand retailers that sell various specialised fertilisers from Richgro etc.

It has more efficiency than urea, ammonium bicarbonate, ammonium chloride, and ammonium nitrate. Large granular ammonium sulphate can also serve as raw material for compound fertilizer.

Due to nitrate-based fertilizers having denitrification losses, it is better used in flooded soils for rice production (especially in the seedling period) to avoid soil lacking sulphur.

To reduce gaseous loss in alkaline conditions, apply to the soil as soon as possible before an irrigation event or a predicted rainfall is advisable.

It does not contain harmful ingredients such as chlorine and biuret. It is suitable as a raw material for compound fertilizers and Bulk blending (BB) fertilizers. It is greater than ammonium nitrate since 100% N in ammonium sulfate will be converted to nitrate to be absorbed, but ammonium nitrate will be 50%.

Should pay attention when using in neutral and alkaline soils, in order to prevent calcium ions combined with sulfate ions to insoluble calcium sulfate (gypsum), caused by soil hardened

Instruction:

  • It is the preferred nitrogen source, and optimal and safe in areas with high pre-existing levels of phosphorus and potassium.
  • It is best to be used as topdressing, and the application rate is generally 20-30 kg per 1000 square meters.
  • It can be used as base fertilizer, topdressing fertilizer and seed fertilizer. Be careful not to use too much when using it as a seed fertilizer. Whether in paddy fields or dry fields, it must be applied deeply.
  • It should be noted that an appropriate amount of lime or organic fertilizer should be applied in acidic soil or in the same field for multiple consecutive applications.

2. In Pesticide Use:

Liquid:

Active Constituent:417g/L Ammonium Sulphate
Pack size: Amsul 417 is available in 20L, 200L and 1000L containers. Conveniently formulated to reduce the need to ease handling heavy 25kg bags of crystalline product. Reduces the antagonism resulting from hard water with specific glyphosate tank mixes like trifluralin and 2,4D-Ester.

Crystalline:

It is used for water-soluble herbicides (insecticides and fungicides). Our ammonium sulfate is often used for this purpose. As an adjuvant agent in agricultural chemicals (Spray Grade Ammonium Sulphate Active 980 g/kg), flowable dissolved ammonium sulfate solution is ideally suited to mix with Glyphosate-based (or 2,4-D Amine Salt, glufosinate) based post-emergence herbicides. Additive in tank mixing to improve their performance and effectiveness at minimising weed & minimise antagonism, and to improve performance under adverse spraying environmental conditions.

It is particularly effective when the water supply contains significant concentrations of calcium, magnesium, or sodium. May be corrosive to metal parts of the sprayer. Thoroughly flush tanks, pumps and nozzles with water after use to avoid plugging spray nozzles.

Function:

| HERBICIDE ADDITIVE | ACTIVATOR | PENETRANT | SPREADING ADJUVANT | SURFACTANT | WETTING AGENT

3. In Industrial Use:

as the raw materials of hydrogen peroxide, aluminium ammonium sulfate, and ammonium chloride; the minor ingredient of ammonium persulfate and lysine.

as an extinguishing agent for fire extinguisher powder, fire suppression and flame-proofing agents, acting much like diammonium phosphate, can be enhanced by blending it with ammonium sulfamate in aerial firefighting.

as a welding agent.

as a flame retardant.

as a flameproofing agent.

as a plating bath additive when galvanizing.

as dyeing auxiliaries of acid dyes.

as a tanning or deliming agent in the tannery.

as a leaching agent.

as a disinfection agent, combined with chlorine to generate monochloramine.

as a salting-out agent, it can be purifying proteins by precipitation.

Attention:
  • As feed additives, it provide non-protein nitrogen nutrients to ruminants or fish cultures. Someone uses it to prepare mineral supplements (licks) for livestock (ruminants).
  • But our commitment is never to use in feed or food as additives since our standards do not match FDA or Feed Safety Management System including Good Manufacturing Practice (GMP) in compliance with the FAMI-QS Code of Practice)
  • Where molasses is used as an energy source in stock licks, additional sulfur is unlikely to be required, since it is typically high in sulfur.

4. In Laboratory use:

Ammonium sulphate precipitation of proteins is one of the most commonly used methods for extensive and laboratory-scale protein purification and fractionation by altering their solubility in the presence of a high salt concentration. As an initial step in protein purification because it enables quick, bulk precipitation of cellular proteins. It is especially useful as a precipitant because it is highly soluble, stabilizes protein structure, has a relatively low density, is readily available, and is relatively inexpensive.

Transportation & Storage

Kept in dry and place, avoid moisture, water, rain and fire, normal transportation.

Shelf-life

In temperate climate: 18 months
In hot climates: 12 months

attention

When ammonium sulphate is in transportation and outdoor storage, It should be kept away from moisture, insolation, rain & high temperature. Should storage in the flat ground within a ventilating low-temperature & dry warehouse. In order to prevent deterioration, In the same warehouse, strictly prohibit storing nearby alkaline substances, such as lime, cement and plant ash. The stacking height should be less than 4 meters.