Molekula
Ammonium iron(III) oxalate trihydrate
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 iron(III) oxalate trihydrate is an inorganic coordination compound, also known as ammonium ferrioxalate, primarily used in photochemistry as a light-sensitive iron(III) complex, notably in chemical actinometry and in cyanotype (blueprint) and other photographic processes. It also serves as a precursor in the synthesis of iron-based catalysts and pigments. This chemical has a CAS number of 13268-42-3, with the molecular formula (NH4)3[Fe(C2O4)3] · 3H2O and a molecular weight of 428.06 g/mol. It should be stored at ambient conditions, and its safety classification includes a signal word of "Warning." Molekula supplies ammonium iron(III) oxalate trihydrate 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.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Specifications
| Property | Value |
|---|---|
| Appearance | Bright green crystalline |
| pH | 3.5 - 5.5 |
| Chloride (Cl-) | ≤0.005% |
| Assay | ≥99% |
| Water insoluble matter | ≤0.05% |
| Iron (Fe) | 12.4 - 13.4 |
| Lead (Pb) | ≤0.0005% |
| Sulphates (SO4)(2-) | ≤0.005% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 14569653 |
| CAS Number | 13268-42-3 |
| Molecular Formula | (NH4)3[Fe(C2O4)3] · 3H2O |
| Molecular Weight | 428.06 |
| SMILES | C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].[NH4+].[NH4+].[NH4+].O.O.O.[Fe+3] |
| REACH Code | Y110 |
| HTS Code | 2917110000 |
| Tariff Code | 2917110099 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H302+312 Harmful if swallowed or in contact with skin
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- 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
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, 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
No alternate names recorded for this product.
Frequently asked questions
What is ammonium iron(III) oxalate trihydrate commonly used for?
It is primarily used in photochemistry, notably in chemical actinometry (the ferrioxalate actinometer) and in cyanotype and blueprint processes, and in research for photochemical studies.
What is the chemical formula and molecular weight of ammonium iron(III) oxalate trihydrate?
The formula is (NH₄)₃[Fe(C₂O₄)₃] · 3H₂O, with a molecular weight of 428.06 g/mol.
What safety classification does this product have?
The product is labeled with the signal word 'Warning' and requires standard handling precautions for oxalate compounds.
How should ammonium iron(III) oxalate trihydrate be stored?
Store in a cool, dry place at ambient temperature, protected from light and moisture to prevent decomposition.
Does Molekula supply this product in bulk quantities?
Yes, we offer bulk packaging options—please contact us for custom quantities and pricing.
What documentation is provided with an order of this chemical?
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.