TCS Industries Limited (China-sourced API supplier) supplies Ammonium Sulfate –– Nitrogen Source for Fertilizer & Fermentation CAS 7783-20-2 for pharmaceutical B2B procurement — COA, MSDS, and technical documentation available on request.
> Overview
| Product Name | Ammonium Sulfate –– Nitrogen Source for Fertilizer & Fermentation |
|---|---|
| Structural Formula |  |
| CAS Number | 7783-20-2 |
| Molecular Formula | H8N2O4S |
| Molecular Weight | 132.14 g/mol |
| InChIKey | BFNBIHQBYMNNAN-UHFFFAOYSA-N |
| SMILES | Available on request where applicable |
| Appearance | White crystalline granules or powder |
| Purity / Grade | By agreed specification and batch COA |
| Storage | Keep tightly closed in a cool, dry, well-ventilated place |
Ammonium Sulfate (CAS 7783-20-2) is an inorganic salt with the formula (NH₄)₂SO₄, containing 21% nitrogen and 24% sulfur. It is one of the oldest and most widely produced nitrogen fertilizers, valued for its sulfur co-nutrition and soil-acidifying properties. Beyond agriculture, ammonium sulfate is used as a fermentation nutrient, protein precipitation agent in biochemistry, and food-grade processing aid.
TCS Industries Limited, a Hong Kong-based trading and sourcing company, supplies Ammonium Sulfate in multiple grades — fertilizer, feed, food and reagent — for agricultural, industrial and pharmaceutical procurement programs.
> Applications
Nitrogen-sulfur fertilizer for alkaline soils
Ammonium sulfate is applied to alkaline and calcareous soils where the ammonium ion (NH₄⁺) provides nitrogen and simultaneously lowers soil pH, improving micronutrient availability. Application rates are typically 200–500 kg/ha depending on crop and soil type. It is preferred over urea in sulfur-deficient soils and in crops with high sulfur demand (Brassicaceae, Allium). Zhao et al. (Adv Agron, 1999, 65:55–97) reviewed sulfur nutrition requirements in crop production.
Protein precipitation and biochemical reagent
Ammonium sulfate is used for salting-out protein precipitation in biochemistry laboratories at concentrations up to saturation (4.1 M at 25 °C). Different proteins precipitate at different ammonium sulfate saturation levels, enabling fractional separation. ACS reagent-grade or molecular biology-grade material is required for this application, with controlled heavy metal and insoluble matter content.
> Sourcing & Supply
TCS Industries Limited supports development, qualification and commercial purchasing discussions for Ammonium Sulfate –– Nitrogen Source for Fertilizer & Fermentation with buyers in South America, Europe, the United Kingdom, Australia, New Zealand, Mexico and Canada.
- Evaluation and commercial quantities: 25 kg bags for qualification; pallet (1000–1250 kg) and bulk for production. Multiple grades (fertilizer, food, reagent) available.
- Pallet quantities and production campaigns: repeat supply is coordinated against packaging, lead time, annual demand and destination-market import requirements.
> Quality & Documentation
Key specification parameters depend on grade. Fertilizer grade: nitrogen content (≥21.0%), moisture (≤0.5%), free acid (≤0.03%), granule size distribution. Food grade (E517): assay (≥99.0%), heavy metals (Pb ≤2 ppm, As ≤1 ppm), pH (3.0–4.5), selenium, fluoride, and insoluble matter per FCC or GB 29207. Reagent grade: assay (≥99.0%), chloride, phosphate, nitrate, heavy metals per ACS specifications. COA and MSDS are standard for all grades.
> Packaging
Ammonium Sulfate is hygroscopic and should be stored in sealed containers in a dry environment. Standard packaging includes 25 kg or 50 kg woven PP bags with PE liner for fertilizer grade, 25 kg paper bags for food and reagent grades, and palletized shrink-wrapped units. Bulk packaging in 1000 kg jumbo bags (FIBC) is available for large orders. Labels and documents are checked before dispatch.
> Pricing & MOQ
Pricing is quoted by specification, packaging and destination. Common commercial discussions use 25 kg bag/drum formats, pallet quantities and production-campaign planning; smaller samples may be reviewed for qualified formulation teams.
> Regulatory & Compounding Context
Ammonium Sulfate is approved as a food additive (E517 in the EU, GRAS in the US) for use as yeast nutrient, dough conditioner and processing aid in bakery products and fermentation. In the EU it is listed in Regulation (EC) 1333/2008. As a fertilizer it is registered under EU Fertilizing Products Regulation (EC) 2019/1009 and national fertilizer laws. No special import permits are required for standard grades. Buyers should specify the target grade (fertilizer, food, reagent) and applicable standard (FCC, ACS, EN) at inquiry.
> Alias Index
- IUPAC: Diammonium sulfate
- CAS Number: 7783-20-2
- Formula: (NH₄)₂SO₄ (MW 132.14 g/mol)
- EU food additive: E517
- Grades: Fertilizer (granular/crystal), Food (FCC), Reagent (ACS), Molecular biology
- Common names: Ammonium sulphate, Diammonium sulphate, Sulfate of ammonia, Mascagnite (mineral)
- InChIKey: BFNBIHQBYMNNAN-UHFFFAOYSA-N
- Commercial request terms: ammonium sulfate fertilizer, (NH4)2SO4 food grade, E517, nitrogen fertilizer, TCS Industries Limited
> FAQ
What grades of Ammonium Sulfate does TCS supply?
TCS sources fertilizer grade (granular and crystal), food grade (FCC/E517), ACS reagent grade, and molecular biology grade. Each grade has different purity, heavy metal, and particle specifications. Specify the intended application and applicable standard at inquiry.
What documents are available for Ammonium Sulfate –– Nitrogen Source for Fertilizer & Fermentation orders?
COA and MSDS are standard for commercial discussions. COO, packing list, invoice and other import-support documents can be arranged according to order scope.
Can TCS Industries Limited support Ammonium Sulfate –– Nitrogen Source for Fertilizer & Fermentation supply to South America?
Yes. We support B2B buyers in Argentina, Colombia, Chile, Peru, Ecuador, Uruguay, Bolivia, Brazil, Paraguay, Venezuela, Guyana and Suriname, subject to route and document review.
Do you support Europe, the United Kingdom, Australia, New Zealand, Mexico and Canada?
Yes. These destinations can be reviewed for project supply, import documents, packaging and logistics planning before quotation.
Is Ammonium Sulfate approved for food use?
Yes. Ammonium Sulfate is approved as food additive E517 in the EU and is GRAS in the US. It is used as a yeast nutrient, dough conditioner and processing aid. Food-grade material must meet FCC or equivalent purity specifications.
What is the nitrogen and sulfur content of Ammonium Sulfate?
Ammonium Sulfate contains 21.0% nitrogen (as ammonium-N) and 24.3% sulfur. Both nutrients are plant-available. This dual nutrition profile makes it preferred over urea in sulfur-deficient soils and for crops with high sulfur demand.
Can you arrange samples before commercial purchasing?
Samples or evaluation quantities may be reviewed for qualified buyers after target specification, application and destination-market requirements are clarified.
How is Ammonium Sulfate –– Nitrogen Source for Fertilizer & Fermentation packaged for export?
Packaging is confirmed by quantity and material properties. Typical options include foil bags, HDPE containers, fibre drums, 25 kg bags or palletized export packaging.
Can buyer-defined specifications be reviewed?
Yes. Send the specification, methods, impurity limits and required documents. TCS can review feasibility before confirming quotation and lead time.
What payment terms are normally used?
Standard payment is 100% T/T before dispatch unless a different arrangement has been approved for an established commercial account.
What lead time should buyers expect?
Lead time depends on stock, batch size, document scope and destination. Available stock can move faster; made-to-order or pallet programs require longer planning.
Is Ammonium Sulfate the same as Ammonium Nitrate?
No. Ammonium Sulfate (CAS 7783-20-2, (NH₄)₂SO₄) contains 21% N and 24% S. Ammonium Nitrate (CAS 6484-52-2, NH₄NO₃) contains 34% N and no sulfur. Ammonium Nitrate is classified as an oxidizer with special transport and storage regulations. Ammonium Sulfate has no such restrictions. Specify which compound is required.
Last reviewed: June 2026
Evaluation and research orders (≤10 kg) are shipped with COA, MSDS, and certificate of origin. Bulk commercial orders (>10 kg) qualify for volume pricing with a full technical documentation package available on request.
> Request a Quote
If your team already has a target application, estimated quantity, destination market, or documentation requirements, send those details so the commercial response can be prepared more efficiently.