| Identification | More | [Name]
Chromium potassium sulfate dodecahydrate | [CAS]
7788-99-0 | [Synonyms]
ALUM CHROME
CHROME ALUM
CHROME ALUM, DODECAHYDRATE
CHROMIC POTASSIUM SULPHATE
CHROMIC POTASSIUM SULPHATE 12-HYDRATE
CHROMIC POTASSIUM SULPHATE DODECAHYDRATE
CHROMIUM(+3)POTASSIUM SULFATE 12-WATER
CHROMIUM(III) POTASSIUM SULFATE
CHROMIUM (III) POTASSIUM SULFATE 12-WATER
CHROMIUM(III) POTASSIUM SULFATE DODECAHYDRATE
CHROMIUM(III) POTASSIUM SULPHATE 12-HYDRATE
CHROMIUM(III) POTASSIUM SULPHATE DODECAHYDRATE
CHROMIUM POTASSIUM SULFATE
CHROMIUM POTASSIUM SULFATE 12 H2O
CHROMIUM POTASSIUM SULFATE, 12-HYDRATE
CHROMIUM POTASSIUM SULFATE DODECAHYDRATE
CHROMIUM POTASSIUM SULFATE, HYDROUS
POTASSIUM CHROMIUM(+3)SULFATE 12-WATER
POTASSIUM CHROMIUM ALUM
POTASSIUM CHROMIUM(III) SULFATE | [EINECS(EC#)]
233-401-6 | [Molecular Formula]
CrH24KO20S2 | [MDL Number]
MFCD00149917 | [Molecular Weight]
499.4 | [MOL File]
7788-99-0.mol |
| Chemical Properties | Back Directory | [Appearance]
deep violet-red crystals | [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℃) | [Stability:]
Stable. Incompatible with magnesium, aluminium. | [Water Solubility ]
24 g/100 mL (15 ºC) | [Merck ]
14,2229 | [CAS DataBase Reference]
7788-99-0(CAS DataBase Reference) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
R36/38:Irritating to eyes and skin . | [Safety Statements ]
S22:Do not breathe dust .
S24/25:Avoid contact with skin and eyes .
S37/39:Wear suitable gloves and eye/face protection .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . | [WGK Germany ]
2
| [RTECS ]
GB6850000
| [TSCA ]
Yes | [HS Code ]
28332990 |
| Hazard Information | Back Directory | [Chemical Properties]
deep violet-red crystals | [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. | [Uses]
Chromium potassium sulfate dodecahydrate is used in method for synthesizing metal-organic terephthalate structure MIL-101 (Cr). | [Uses]
Chromium potassium sulfate dodecahydrate is used in preparation of chromium standard solutions.
| [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. |
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