Molekula
Ammonium sulfate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · 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
In stock — same-day dispatch
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 — £21.10 per pack ex VAT · £25.32 inc. VAT
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5 kg — £66.80 per pack ex VAT · £80.16 inc. VAT
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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
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.