Chromium potassium sulfate dodecahydrate
Synonym(s):Chrome alum;Chromium(III) potassium sulfate dodecahydrate;Potassium chromium(III) sulfate dodecahydrate;Potassium chromium(III) sulfate, Alum chrome
- CAS NO.：7788-99-0
- Empirical Formula: CrH5KO5S
- Molecular Weight: 208.19
- MDL number: MFCD00149917
- EINECS: 616-539-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-04-17 18:50:11
What is Chromium potassium sulfate dodecahydrate ?
Chemical properties
deep violet-red crystals
The Uses of Chromium potassium sulfate dodecahydrate
Chromium potassium sulfate dodecahydrate is used in preparation of chromium standard solutions.
The Uses of Chromium potassium sulfate dodecahydrate
Chromium potassium sulfate dodecahydrate is used in method for synthesizing metal-organic terephthalate structure MIL-101 (Cr).
The Uses of Chromium potassium sulfate dodecahydrate
Chromium(III) potassium sulfate dodecahydrate [KCr(SO4)2.12H2O] has been used for the dissolution of gelatin in various studies.
It may be used as a starting material in the synthesis of quasi-monodisperse spherical core-shell particles of Cr/α-Cr2O3 to be used as solar absorbers.
What are the applications of Application
Chromium(III) potassium sulfate dodecahydrate is used for tanning of leather and as a photographic film hardener
General Description
Chromium(III) potassium sulfate dodecahydrate (Potassium chromium(III) sulfate dodecahydrate, Chrome alum) is a violet colored solid. It has been synthesized by reacting sulfur dioxide with potassium dichromate (diisolved in sulfuric acid) at -38°C. It is widely used chemical in dyeing and textile industry.
Purification Methods
Crystallise it from hot water (2mL/g) by cooling.
Properties of Chromium potassium sulfate dodecahydrate
| Melting point: | 89 °C(lit.) |
| Density | 1.83 |
| storage temp. | Store at +15°C to +25°C. |
| solubility | water: soluble(lit.) |
| form | Solid |
| color | Violet |
| Odor | Odorless |
| PH | 3 (50g/l, H2O, 20℃) |
| Water Solubility | 24 g/100 mL (15 ºC) |
| Merck | 14,2229 |
| Exposure limits | NIOSH: IDLH 25 mg/m3; TWA 0.5 mg/m3 |
| Stability: | Stable. Incompatible with magnesium, aluminium. |
| CAS DataBase Reference | 7788-99-0(CAS DataBase Reference) |
Safety information for Chromium potassium sulfate dodecahydrate
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P332+P313:IF SKIN irritation occurs: Get medical advice/attention. P337+P313:IF eye irritation persists: Get medical advice/attention. |
Computed Descriptors for Chromium potassium sulfate dodecahydrate
New Products
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