aluminium(3+) ion potassium dodecahydrate disulfate

• ChemBase ID: 130853
• Molecular Formular: AlH27KO20S2
• Molecular Mass: 477.412218
• Monoisotopic Mass: 476.99895557
• SMILES: O.O.O.O.O.O.O.O.O.O.O.O.[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[AlH3+3].[K+]
• Canonical SMILES: [O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].O.O.O.O.O.O.O.O.O.O.O.O.[AlH3+3].[K+]
• InChI: InChI=1S/Al.K.2H2O4S.12H2O/c;;2*1-5(2,3)4;;;;;;;;;;;;/h;;2*(H2,1,2,3,4);12*1H2/q+3;+1;;;;;;;;;;;;;;/p-4
• InChIKey: GNHOJBNSNUXZQA-UHFFFAOYSA-J

NAMES AND DATABASE IDS

Names

• IUPAC name: aluminium(3+) ion potassium dodecahydrate disulfate
• IUPAC Traditional name: aluminium(3+) ion potassium dodecahydrate disulfate
• Synonyms: Alum; Potassium alum; Potassium aluminum sulfate dodecahydrate; Aluminum potassium sulfate dodecahydrate, ACS; Aluminum potassium sulfate dodecahydrate; Potassium alum dodecahydrate; 十二水硫酸铝钾, ACS; 硫酸铝钾 十二水合物; 明矾; 硫酸钾铝 十二水合物; 硫酸铝钾 十二水合物; 钾明矾; 钾明矾 十二水合物

Database IDs

• CAS Number: 7784-24-9
• EC Number: 233-141-3
• MDL Number: MFCD00149143
• Merck Index: 14360
• PubChem SID: 24891189; 24898896; 24847709; 24891090; 162225131; 24858892; 24854215
• PubChem CID: 62667

CALCULATED PROPERTIES

• Acid pKa: -3.034349
• H Acceptors: 4
• H Donor: 0
• LogD (pH = 5.5): -5.569452
• LogD (pH = 7.4): -5.594027
• Log P: -0.841552
• Molar Refractivity: 11.5274 cm^3
• Polarizability: 6.037845 Å^3
• Polar Surface Area: 80.26 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Solubility: H2O: soluble0.5 M, clear, colorless; Soluble in water, glycerol. Insoluble in alcohol
• Apperance: Granular
• Melting Point: 92 °C(lit.); 92°C
• Density: 1.757; 1.757 g/mL at 25 °C(lit.)
• pH: 3.0-3.5 (20 °C, 10%); 3.0-3.5 (25 °C, 50 mg/mL in H2O)

Safety Information

• RTECS: WS5690000
• German water hazard class: 3
• TSCA Listed: 是
• Personal Protective Equipment: Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter

Product Information

• Purity: ≥98%; ≥98.0%; ≥99.0% (T); ≥99.5%; ≥99.995%; 98.0-102.0%; 98.0-102.0% (ACS specification); 99.0-100.5% (calc. on dry substance); 99.0-102.0%
• Grade: ACS reagent; ACS reagent, reag. Ph. Eur.; JIS special grade; puriss.; puriss. p.a.; ReagentPlus®; SAJ first grade
• Suitability: complies for appearance of solution; meets USP testing specifications; suitable for insect cell culture
• Impurities: <50 ppm total metallic impurities; ≤0.0005% Phosphorus (P); ≤0.001% heavy metals (as Pb); ≤0.005% ammonium (NH4); ≤0.005% Insoluble matter; ≤0.005% insolubles; ≤0.2% ammonium (NH4)
• Cation Traces: As: ≤0.1 mg/kg; As: ≤2 mg/kg; Ca: ≤0.0005%; Ca: ≤50 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤0.0005%; Cu: ≤5 mg/kg; Fe: ≤0.001%; Fe: ≤5 mg/kg; Fe:, in accordance; heavy metals (as Pb): ≤0.001%; heavy metals: ≤0.001%; Mg: ≤0.005%; Mg: ≤50 mg/kg; Mn: ≤5 mg/kg; Na: ≤0.005%; Na: ≤0.02%; Na: ≤100 mg/kg; Na: ≤50 mg/kg; NH4+: ≤0.005%; NH4+: ≤50 mg/kg; Ni: ≤5 mg/kg; Pb: ≤0.001%; Pb: ≤10 mg/kg; Pb: ≤5 mg/kg; Zn: ≤0.0005%; Zn: ≤5 mg/kg
• Antion Traces: chloride (Cl-): ≤0.0005%; chloride (Cl-): ≤5 mg/kg; chloride (Cl-): ≤5 ppm; chloride (Cl-): ≤50 mg/kg
• Loss on Drying: 43.0-46.0 loss on drying
• Quality: meets analytical specification of Ph. Eur., BP
• Linear Formula: AlK(SO4)2 · 12H2O

DETAILS

Sigma Aldrich - 467820

Legal Information
ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC

Sigma Aldrich - 237086

Packaging
100, 500 g in poly bottle
2.5 kg in poly bottle