Ammonium Sulphate

AMMONIUM SULPHATE 50KG – A RELIABLE SOURCE OF NITROGEN AND SULPHUR

Ammonium Sulphate, also known as Ammonium Sulfate, Sulphate of Ammonia, Diammonium Sulfate or SA fertilizer, is an inorganic salt with the chemical formula (NH₄)₂SO₄. It is commonly supplied as white crystals or granules, is odorless and readily soluble in water. The product is widely used in fertilizer production, industrial chemical processing, wood-based materials, microbial cultivation, fire-extinguishing powders, paper treatment, textiles and biotechnology.

PRODUCT INFORMATION / Introduced packaging: 50 kg/bag. The product packaging displays Nitrogen ≥ 21% and Sulphur ≥ 24%. Final acceptance criteria must be verified against the Certificate of Analysis for the actual batch.

1. What Is Ammonium Sulphate?

Ammonium Sulphate is the ammonium salt of sulphuric acid. It consists of two ammonium ions, NH₄⁺, and one sulphate ion, SO₄²⁻. Commercial fertilizer grades commonly provide approximately 20–21% nitrogen and 23–24% sulphur. Ammonium nitrogen supports plant growth, while sulphur contributes to the synthesis of amino acids, proteins and enzymes.

2. Product Identification and Technical Data

Property	Information
Product name	Ammonium Sulphate
Alternative spelling	Ammonium Sulfate
Common names	Sulphate of Ammonia, Diammonium Sulfate, SA fertilizer
Chemical formula	(NH₄)₂SO₄
CAS No.	7783-20-2
EC No.	231-984-1
Molecular weight	132.14 g/mol
Appearance	White or off-white crystals/granules
Odour	Odourless
Solubility	Readily soluble in water
Packaging	50 kg/bag
Origin shown on packaging	Taiwan

2.1. Typical Commercial Specifications

Parameter	Typical reference
Total nitrogen	Approximately 20–21%; packaging displays ≥ 21%
Sulphur	Approximately 23–24%; packaging displays ≥ 24%
Moisture	Commonly ≤ 0.5–1.0%, depending on grade and manufacturer
Free acidity	According to manufacturer specifications and COA
Particle size	According to crystalline or granular grade
Water-insoluble matter	According to the batch COA
Flammability	Non-flammable under normal conditions
Stability	Stable when stored under dry conditions
Strong heating	May decompose and release hazardous gases

TECHNICAL NOTICE / The values in this document are provided for reference only and do not replace the TDS, SDS or COA. Final acceptance must be based on the documents for the actual delivered batch.

3. Key Features

• Provides both ammonium nitrogen and sulphate sulphur.
• Readily soluble in water for suitable blending and solution-preparation processes.
• Solid form is convenient for weighing, transportation and storage when protected from moisture.
• Contains no added phosphorus or potassium, making it suitable for formulas requiring separate N and S sources.
• The 50 kg packaging is suitable for manufacturing, commercial distribution and industrial use.

4. Applications

4.1. Fertilizer Production and Blending

• Used as a source of nitrogen and sulphur for crops.
• Used in straight fertilizers, NPK blends and specialist fertilizer formulations.
• Adds sulphur to deficient soils and helps adjust nutrient formulas.
• May be applied directly under appropriate soil-test and agronomic recommendations.
• The product may be considered for rice, maize, sugarcane, coffee, tea, fruit trees, vegetables and industrial crops. Application rates should be based on crop type, growth stage, soil pH, irrigation conditions and the existing nutrient programme.

4.2. Industrial Applications

• Used as an ammonium source or intermediate in selected chemical processes.
• May support textile dyeing, fibre treatment and finishing processes after compatibility evaluation.
• Used in selected wood-material, paper, flame-retardant textile and fire-extinguishing powder formulations.
• May be used in specially designed water-treatment systems.

4.3. Laboratory and Biotechnology Applications

• Ammonium Sulphate of an appropriate purity grade may be used for protein precipitation by the “salting-out” method, microbial cultivation or fermentation. Fertilizer grade and general industrial grade must not automatically be used in laboratory, food, pharmaceutical or animal-feed applications.

5. Instructions for Use

• Apply directly to soil as a basal or top-dressing fertilizer according to the cultivation programme.
• Blend with compatible fertilizers.
• Dissolve for use in suitable systems or use as an industrial raw material.
• Perform compatibility and small-scale tests before blending or full-scale processing.
• A single dosage should not be applied to every crop and soil. Industrial users should evaluate the effect on pH, solubility, equipment and finished-product stability before large-scale use.

6. Safety, Storage and Transportation

• Wear safety goggles, gloves, protective clothing and dust protection during handling or transfer.
• Work in a well-ventilated area, minimise dust generation and avoid inhaling dust.
• Store in a dry, cool and ventilated warehouse; keep bags on pallets and away from direct floor contact.
• Keep packaging tightly closed and protect from rain, high humidity, direct sunlight and strong heat.
• Separate from alkalis, nitrites and incompatible chemicals.
• Do not discharge large quantities into drains, surface water or groundwater.
• Protect cargo from rain, secure the load and keep labels intact during transportation.
• In case of eye contact, rinse immediately with clean water for at least 15 minutes. If excessive dust is inhaled, move the affected person to fresh air. Seek medical attention if symptoms persist and provide the product Safety Data Sheet.

7. Selection and Acceptance Criteria

• Nitrogen content, sulphur content, moisture and free acidity.
• Appearance, particle-size uniformity and caking condition.
• Water-insoluble matter and application-specific impurity limits.
• Origin, manufacturer, packaging condition, COA and SDS.
• Suitability for the plant’s actual technical and process requirements.

8. Frequently Asked Questions