Molekula
Chromium(III) potassium sulfate dodecahydrate
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
Chromium(III) potassium sulfate dodecahydrate is an inorganic compound primarily used as a mordant in dyeing and tanning processes, as well as a nutrient supplement in microbiological media. It appears as a purple crystalline solid with high solubility in water. This chemical has a CAS number of 7788-99-0, with the molecular formula CrK(SO₄)₂·12H₂O and a molecular weight of 499.40 g/mol. It is stable under ambient storage conditions and carries no signal word for hazard classification. Molekula supplies Chromium(III) potassium sulfate dodecahydrate 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
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.
-
500 g — $357.20 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 | Purple powder or solid |
| Chloride (Cl-) | ≤0.03% |
| Solubility | Soluble in water |
| Assay | ≥98.5% |
| Iron (Fe) | ≤0.03% |
| Lead (Pb) | ≤0.01% |
| Copper (Cu) | ≤0.005% |
| Ammonium (NH4+) | ≤0.01% |
| Density (g/cm3) | 1.826 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 19416219 |
| CAS Number | 7788-99-0 |
| IUPAC Name | potassium;chromium(3+);disulfate;dodecahydrate |
| Molecular Formula | CrK(SO4)2·12H2O |
| Molecular Weight | 499.40 |
| Exact Mass | 498.9344 |
| SMILES | O.O.O.O.O.O.O.O.O.O.O.O.[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[K+].[Cr+3] |
| InChIKey | ZFVHBEKVAITXHW-UHFFFAOYSA-J |
| InChI | InChI=1S/Cr.K.2H2O4S.12H2O/c;;2*1-5(2,3)4;;;;;;;;;;;;/h;;2*(H2,1,2,3,4);12*1H2/q+3;+1;;;;;;;;;;;;;;/p-4 |
| PubChem CID | 24596 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2833.30.0000 |
| Tariff Code | 2833300000 |
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, Portuguese, 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
- Chrome alum (dodecahydrate)
- Chromic potassium sulfate dodecahydrate
- CHROMIUM KALI SULPHURICUM
- Chromium potassium sulfate dodecahydrate
- CHROMIUM(III) POTASSIUM DISULFATE DODECAHYDRATE
- Chromium(III) potassium sulfate (1:1:2), dodecahydrate
- Potassium chromium alum dodecahydrate
- Potassium chromium(III) sulfate dodecahydrate
- potassium;chromium(3+);disulfate;dodecahydrate
- Sulfuric acid, chromium(3+)potassium salt(2:1:1), dodecahydrate
Frequently asked questions
What is Chromium(III) potassium sulfate dodecahydrate commonly used for?
It is primarily used as a mordant in dyeing and tanning processes, as well as in analytical chemistry for volumetric analysis and as a catalyst in various chemical reactions.
What is the chemical formula and molecular weight of Chromium(III) potassium sulfate dodecahydrate?
The chemical formula is **CrK(SO₄)₂·12H₂O**, and the molecular weight is **499.40 g/mol**.
How should Chromium(III) potassium sulfate dodecahydrate be stored?
Store in a tightly sealed container at **ambient temperature**, away from moisture and incompatible substances.
What grades of Chromium(III) potassium sulfate dodecahydrate does Molekula supply?
Molekula supplies **analytical reagent (AR) grade** and **industrial grade** Chromium(III) potassium sulfate dodecahydrate.
Can Molekula supply Chromium(III) potassium sulfate dodecahydrate in bulk quantities?
Yes, we offer bulk quantities upon request, with flexible packaging options including drums, bags, or custom solutions.
What documentation comes with an order of Chromium(III) potassium sulfate dodecahydrate?
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.