Chromium potassium sulfate dodecahydrate
- CAS No.
- 7788-99-0
- Chemical Name:
- Chromium potassium sulfate dodecahydrate
- Synonyms
- abs9131;ALUM CHROME;CHROME ALUM;chromic alum;Chromium potassium s;potassium chrome alum;POTASSIUM CHROMIUM ALUM;CHROME ALUM, DODECAHYDRATE;CHROMIC POTASSIUM SULPHATE;CHROMIUM POTASSIUM SULFATE
- CBNumber:
- CB6307992
- Molecular Formula:
- CrH5KO5S
- Molecular Weight:
- 208.19
- MDL Number:
- MFCD00149917
- MOL File:
- 7788-99-0.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Product description | Number | Pack Size | Price |
| Chromium(III) potassium sulfate dodecahydrate ACS reagent, ≥98% | 243361 | 5g | $74.2 |
| Chromium(III) potassium sulfate dodecahydrate ACS reagent, ≥98% | 243361 | 100g | $95.7 |
| Chromium(III) potassium sulfate dodecahydrate for analysis EMSURE? ACS,Reag. Ph Eur | 1.01036 | 250g | $212 |
| Chromium(III) potassium sulfate dodecahydrate 98.0-102.0%(Titration) | 33381 | 100G | $22.03 |
| Chromium(III) potassium sulfate dodecahydrate 98.0-102.0%(Titration) | 33381 | 250G | $44.97 |
| More product size | |||
| Melting point | 89 °C(lit.) |
|---|---|
| bulk density | 800-1000kg/m3 |
| 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. |
| InChI | InChI=1S/Cr.K.H2O4S.H2O.H/c;;1-5(2,3)4;;/h;;(H2,1,2,3,4);1H2; |
| InChIKey | WAYJJQPENBTMDM-UHFFFAOYSA-N |
| SMILES | S(O)(O)(=O)=O.[Cr].[KH].O |
| Indirect Additives used in Food Contact Substances | CHROME ALUM |
| CAS DataBase Reference | 7788-99-0(CAS DataBase Reference) |
| FDA UNII | H54D055WX6 |
| UNSPSC Code | 12352302 |
| NACRES | NB.24 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319 | |||||||||
| Precautionary statements | P264-P280-P302+P352-P305+P351+P338-P332+P313-P337+P313 | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 36/38 | |||||||||
| Safety Statements | 22-24/25-37/39-26 | |||||||||
| WGK Germany | 2 | |||||||||
| RTECS | GB6850000 | |||||||||
| TSCA | Yes | |||||||||
| HS Code | 28332990 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazard Classifications | Eye Irrit. 2 Skin Irrit. 2 |
|||||||||
| NFPA 704 |
|
Chromium potassium sulfate dodecahydrate price More Price(56)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 243361 | Chromium(III) potassium sulfate dodecahydrate ACS reagent, ≥98% | 7788-99-0 | 5g | $74.2 | 2026-04-30 | Buy |
| Sigma-Aldrich | 243361 | Chromium(III) potassium sulfate dodecahydrate ACS reagent, ≥98% | 7788-99-0 | 100g | $95.7 | 2026-04-30 | Buy |
| Sigma-Aldrich | 1.01036 | Chromium(III) potassium sulfate dodecahydrate for analysis EMSURE? ACS,Reag. Ph Eur | 7788-99-0 | 250g | $212 | 2026-04-30 | Buy |
| Chem-Impex | 33381 | Chromium(III) potassium sulfate dodecahydrate 98.0-102.0%(Titration) | 7788-99-0 | 100G | $22.03 | 2026-05-19 | Buy |
| Chem-Impex | 33381 | Chromium(III) potassium sulfate dodecahydrate 98.0-102.0%(Titration) | 7788-99-0 | 250G | $44.97 | 2026-05-19 | Buy |
Chromium potassium sulfate dodecahydrate Chemical Properties,Uses,Production
Chemical Properties
deep violet-red crystals
Uses
Chromium potassium sulfate dodecahydrate is used in preparation of chromium standard solutions.
Uses
Chromium potassium sulfate dodecahydrate is used in method for synthesizing metal-organic terephthalate structure MIL-101 (Cr).
Uses
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.
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.
reaction suitability
reagent type: catalyst
core: chromium
Synthesis
After dissolving 98% potassium dichromate and 98% sulfuric acid in the mother liquor of chromium alum according to the theoretical amount, wood chips were added slowly under stirring for reduction. The reaction temperature is controlled at not more than 80C. After the reaction, it is left to crystallize slowly, and after centrifugal separation of the mother liquor, the crystals are washed with a small amount of cold water, and then dried at a low temperature to produce the finished product of chromium potassium sulfate. The reaction formula is as follows:
2K2Cr2O7+8H2SO4+40H2O+3C4KCr(SO4)2-21H2O+3CO2
Purification Methods
Crystallise it from hot water (2mL/g) by cooling.
Chromium potassium sulfate dodecahydrate Preparation Products And Raw materials
Raw materials
Preparation Products
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| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Chuanghai Biotechnology Co., Ltd | +8615350571055 | Sibel@chuanghaibio.com | China | 8738 | 58 |
| Hebei Yanxi Chemical Co., Ltd. | +8618531123677 | faithe@yan-xi.com | China | 5853 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21588 | 55 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | factory@coreychem.com | China | 29794 | 58 |
| Antai Fine Chemical Technology Co.,Limited | 18503026267 | info@antaichem.com | CHINA | 9636 | 58 |
| SIMAGCHEM CORP | +86-5922680277 +86-13806087780 | sale@simagchem.com | China | 17346 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +8618949823763 | sales@tnjchem.com | China | 34563 | 58 |
| ANHUI WITOP BIOTECH CO., LTD | +8615255079626 | eric@witopchemical.com | China | 23541 | 58 |
| Shaanxi Dideu Medichem Co. Ltd | +86-029-89586680 +86-18192503167 | 1026@dideu.com | China | 10000 | 58 |
| Dayang Chem (Hangzhou) Co.,Ltd. | +86-0571-88938639 +8617705817739 | info@dycnchem.com | China | 52705 | 58 |
View Lastest Price from Chromium potassium sulfate dodecahydrate manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-03-20 | Chromium potassium sulfate dodecahydrate
7788-99-0
|
US $10.00 / KG | 1KG | 99% | 10 mt | Hebei Chuanghai Biotechnology Co., Ltd | |
 |
2026-02-25 | Chromium potassium sulfate dodecahydrate
7788-99-0
|
US $1000.00 / ton | 5ton | 98% | 3000tons | Hebei Dangtong Import and export Co LTD | |
 |
2025-06-20 | Chromium potassium sulfate dodecahydrate
7788-99-0
|
US $0.00 / KG | 25KG | 98% | 200MT/Month | Hebei Yanxi Chemical Co., Ltd. |
-
- Chromium potassium sulfate dodecahydrate
7788-99-0
- US $10.00 / KG
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
-
- Chromium potassium sulfate dodecahydrate
7788-99-0
- US $1000.00 / ton
- 98%
- Hebei Dangtong Import and export Co LTD
-
- Chromium potassium sulfate dodecahydrate
7788-99-0
- US $0.00 / KG
- 98%
- Hebei Yanxi Chemical Co., Ltd.
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