Molekula
Ammonium sulfate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Ammonium sulfate is an inorganic salt widely used as a nitrogen-based fertilizer in agriculture, a buffering agent in biochemical applications, and a food additive (E517) in baking and brewing. It dissolves readily in water and supports plant growth by providing ammonium and sulfate ions. This white crystalline solid has a CAS number of 7783-20-2, a molecular formula of (NH₄)₂SO₄, and a molecular weight of 132.14 g/mol. It is non-hazardous (no signal word) and stable at ambient storage conditions. Molekula supplies ammonium sulfate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Often bought together
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 kg — $40.10 per pack
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5 kg — $126.90 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White crystalline solid |
| Water | ≤ 0.20% |
| Heavy metals | ≤ 5mg/kg |
| Identification | Conforms to reference |
| Assay | ≥ 99.0% |
| Sulphated Ash | ≤ 0.05% |
| Free acid | ≤ 0.01% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
For research use only. Not for human use.
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White or brown orthorhombic crystals |
| Odour | Odorless |
| Melting Point | 280 °C (decomposes) |
| Density | 1.77 g/cm³ |
| Solubility (other solvents) | Freely soluble in water, insoluble in ethanol |
| Refractive Index | 1.521 |
Source: PubChem CID 6097028 (HSDB, EU Food Improvement Agents)
Identification
| Property | Value |
|---|---|
| SKU | 10565375 |
| CAS Number | 7783-20-2 |
| IUPAC Name | diazanium;sulfate |
| EC Number | 231-984-1 |
| Molecular Formula | (NH4)2SO4 |
| Molecular Weight | 132.14 |
| Exact Mass | 132.0205 |
| SMILES | [NH4+].[NH4+].[O-]S(=O)(=O)[O-] |
| InChIKey | BFNBIHQBYMNNAN-UHFFFAOYSA-N |
| InChI | InChI=1S/2H3N.H2O4S/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4) |
| PubChem CID | 6097028 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 31022100 |
| Tariff Code | 3102210000 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Russian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Actamaster
- Ammonium sulfate (2:1)
- Ammonium sulphate
- Caswell No. 048
- Diammonium sulfate
- Diammonium sulphate
- Dolamin
- Mascagnite
- Sulfatom ammoniya
- Sulfuric acid diammonium salt
Frequently asked questions
What is ammonium sulfate commonly used for?
Ammonium sulfate is primarily used as a nitrogen fertilizer in agriculture, as a flame retardant, and in the production of pharmaceuticals, food additives, and laboratory chemicals.
What is the chemical formula and molecular weight of ammonium sulfate?
The chemical formula is **(NH₄)₂SO₄**, and the molecular weight is **132.14 g/mol**.
How should ammonium sulfate be stored?
Store ammonium sulfate in a **cool, dry place at ambient temperature**, away from incompatible substances like strong oxidizers.
What grades of ammonium sulfate does Molekula supply?
Molekula supplies **technical grade** and **laboratory reagent grade** ammonium sulfate, depending on purity requirements.
Can Molekula supply ammonium sulfate in bulk quantities?
Yes, we offer **bulk packaging options** (e.g., 25 kg bags, 1-tonne containers) for large-scale industrial or agricultural applications.
What documentation comes with an ammonium sulfate order?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.