Molekula
Ammonium iron (III) citrate (Brown)
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 iron(III) citrate (Brown) is a coordination complex used primarily as a food additive (E381) to fortify iron levels, prevent anemia, and enhance color in processed foods like cereals, baked goods, and dietary supplements. It is also employed in pharmaceuticals as an iron supplement and in laboratory applications for iron buffering. This chemical has a CAS number of 1185-57-5 with the molecular formula C6H8O7·xFe³⁺·yNH3. It is stored at ambient temperatures and carries a warning signal word for safety.
Molekula supplies Ammonium iron (III) citrate (Brown) at 16.5 - 18.5% purity in 100 g packs, from £29.76 inc. VAT. It is made or sourced to order. Every batch ships with a certificate of analysis, and safety data sheets are available in 5 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
On backorder — expected to ship by 5 December 2026
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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100 g — £24.80 per pack ex VAT · £29.76 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 | Brown powder/ granules |
| Assay | 16.5 - 18.5% |
| Total Coliforms | Negative |
| Total aerobic plate count | ≤ 1000 cfu/g |
| Lead (Pb) | ≤ 2ppm |
| Mercury (Hg) | ≤ 1ppm |
| pH (5% sol) | 5.0 - 8.0 |
| ID Test A,B,C | Pass |
| Sulphates (SO4)(2-) | ≤ 0.3% |
| Mould & Yeast | ≤100 cfu/g |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 90021908 |
| CAS Number | 1185-57-5 |
| Molecular Formula | C6H8O7 ·xFe3+ · yNH3 |
| Molecular Weight | N/A |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29183090 |
| Tariff Code | 2918150090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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
No alternate names recorded for this product.
Frequently asked questions
What is ammonium iron(III) citrate (Brown) commonly used for?
It is primarily used as a food additive (E381) for iron fortification in dietary supplements, animal feed, and some processed foods to prevent iron deficiency.
What is the chemical formula and molecular weight of ammonium iron(III) citrate (Brown)?
The formula is C₆H₈O₇·xFe³⁺·yNH₃, but the exact molecular weight (MW) varies due to the variable stoichiometry of iron and ammonia.
How should ammonium iron(III) citrate (Brown) be stored?
Store in a cool, dry place at ambient temperature, away from moisture and strong oxidizing agents. Keep containers tightly sealed.
What grades or purity levels are available for this product?
Molekula supplies ammonium iron(III) citrate (Brown) as a brown powder or granules with an assay of 16.5–18.5%, pH (5% solution) of 5.0–8.0, lead ≤ 2 ppm, mercury ≤ 1 ppm, sulphates ≤ 0.3%, total aerobic plate count ≤ 1000 cfu/g, mould and yeast ≤ 100 cfu/g and negative total coliforms.
Can Molekula supply this product in bulk quantities?
Yes, we offer bulk packaging options (e.g., 25kg drums, 1MT big bags) for industrial, food-grade, and contract manufacturing needs—please inquire for specific requirements.
What documentation is provided with an order of ammonium iron(III) citrate (Brown)?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability and compliance.
Where can I buy Ammonium iron (III) citrate (Brown)?
Directly from Molekula, which lists Ammonium iron (III) citrate (Brown) in 100 g packs from £29.76 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
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.