Molekula
Ammonium oxalate monohydrate(RP)
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 oxalate monohydrate (RP) is a white crystalline solid derived from oxalic acid and ammonia, primarily used in analytical chemistry for precipitation reactions, water treatment, and as a reagent in chemical synthesis. It appears as odorless, hygroscopic crystals with a molecular formula of (NH4)2C2O4·H2O and a molecular weight of 142.11 g/mol. Store at ambient conditions, handling with caution—it carries a warning signal word due to potential hazards. Molekula supplies ammonium oxalate monohydrate (RP) 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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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 |
|---|---|
| Chloride (Cl-) | ≤ 0.002 |
| Assay | ≥ 99.5 |
| Heavy Metals (Pb) | ≤ 0.0015 |
| Water insoluble matter | ≤ 0.015 |
| Iron (Fe) | ≤ 0.001 |
| Calcium (Ca) | ≤ 0.005 |
| Magnesium (Mg) | ≤ 0.005 |
| Potassium (K) | ≤ 0.005 |
| pH (50g/l, 25℃) | 6.0-7.0 |
| Sodium (Na) | ≤ 0.005 |
| Sulphates (SO4)(2-) | ≤ 0.02 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 90035943 |
| CAS Number | 6009-70-7 |
| Molecular Formula | (NH4)2C2O4 · H2O |
| Molecular Weight | 142.11 |
| SMILES | C(=O)(C(=O)[O-])[O-].[NH4+].[NH4+].O |
| REACH Code | Y113 |
| HTS Code | 29171100 |
| Tariff Code | 2917110099 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
- H319 Causes serious eye irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+330 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting
- 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.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is ammonium oxalate monohydrate used for?
Ammonium oxalate monohydrate is commonly used as a reagent in analytical chemistry, a precipitating agent for calcium and magnesium ions, and as a component of Hucker's crystal violet solution used in Gram staining.
What is the chemical formula and molecular weight of ammonium oxalate monohydrate?
The chemical formula is (NH₄)₂C₂O₄ · H₂O, and the molecular weight is 142.11 g/mol.
What safety classification does ammonium oxalate monohydrate have?
The product carries a Signal Word: Warning under GHS classification, indicating moderate hazard.
How should ammonium oxalate monohydrate be stored?
Store at ambient conditions in a cool, dry place, away from incompatible substances.
Does Molekula offer ammonium oxalate monohydrate in bulk quantities?
Yes, we supply ammonium oxalate monohydrate in bulk quantities—please contact us for specific packaging options.
What documentation comes with an order of ammonium oxalate monohydrate?
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.