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Chromic potassium sulfate dodecahydrate
CHROME ALUM · abs9131 · ALUM CHROME · chromic alum · Chromium potassium s · potassium chrome alum · POTASSIUM CHROMIUM ALUM · CHROME ALUM, DODECAHYDRATE
Identifikatoren & physikalische Daten
| CAS No. | 7788-99-0 |
|---|---|
| Summenformel | CrH24KO20S2 |
| Durchschnittliche Molmasse | 499,4 g/mol |
| Monoisotopische Masse | 498,934447 g/mol |
| SMILES | O.O.O.O.O.O.O.O.O.O.O.O.O=S(=O)([O-])[O-].O=S(=O)([O-])[O-].[Cr+3].[K+] |
| InChIKey | ZFVHBEKVAITXHW-UHFFFAOYSA-J |
| PubChem CID | 24596 |
| DTXSID | DTXSID90228493 |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 189 |
|---|---|
| H-Brücken-Donoren | 12 |
| H-Brücken-Akzeptoren | 20 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 24 |
| Formalladung | 0 |
| Komplexität | 62,2 |
| Stoffklassen | Metals -> Chromium Compounds, Inorganic |
| Dichte | 1.83 @25 °C |
| Physical Description | Violet-red to black crystalsSolutions turn green when heated[CHEMINFO] Soluble in water[Alfa Aesar] |
| Schmelzpunkt | 89 °C(lit.) |
| Lagerbedingungen | Store at +15°C to +25°C. |
| Löslichkeit | water: soluble(lit.)24 g/100 mL (15 ºC) |
| Aggregatzustand | Solid |
| Farbe | Violet |
| pH | 3 (50g/l, H2O, 20℃) |
| Geruch | Odorless |
| Merck | 14,2229 |
| Stabilität | Stable. Incompatible with magnesium, aluminium. |
| InChI | InChI=1S/Cr.K.H2O4S.H2O.H/c1-5(2,3)4/h(H2,1,2,3,4)1H2 |
| InChIKey | WAYJJQPENBTMDM-UHFFFAOYSA-N |
| SMILES | S(O)(O)(=O)=O.[Cr].[KH].O |
| CAS Datenbank | 7788-99-0(CAS DataBase Reference) |
Sicherheit & Vorschriften
| Gefahrenübersicht | CrIII compounds do not cause chrome ulcerations but may cause allergic dermatitis in workers with prior sensitization to CrVI compounds. [ILO Encyclo] CrIII is an essential trace mineral in the human diet. [ATSDR Case Studies] See Chromium. |
|---|---|
| Threshold Limit Values (TLV) | 0.003 [mg/m3], as Cr(III), inhalable particulate matter |
| Permissible Exposure Limit (PEL) | 0.5 [mg/m3] |
| Protective Action Criteria (PAC) | 0.67 [mg/m3]7.4 [mg/m3]44 [mg/m3] |
| Unerwünschte Wirkungen | Skin Sensitizer - An agent that can induce an allergic reaction in the skin. |
| Wassergefährdungsklasse (WGK) | 2 |
| TSCA-Inventar-Status | Yes |
| Zollcode | 28332990 |
| RTECS-Nr. | GB6850000 |
| R-Sätze (R) | 36/38 |
| Gefahrensymbole | Xi |
| Sicherheitshinweise (S) | 22-24/25-37/39-26 |
| Lagerklasse | 11 - Combustible Solids |
| Gefahrenklasse | Eye Irrit. 2Skin Irrit. 2 |
Anwendungen & Verwendung
Verwenden
Chromium potassium sulfate dodecahydrate is used in preparation of chromium standard solutions.