Calcium hydroxide

• Catalog No.: Calcium_hydroxide
• CAS Number: 1305-62-0
• M. F.: CaO2
• M. W.: 72.0768

SYNONYMS

• IUPAC name: calcium dioxidanide
• IUPAC Traditional name: calcium dioxidanide
• Synonyms: Calcium(II) hydroxide; Slaked lime; Pickling lime; Milk of lime; Hydrated lime

DATABASE IDS

• Chemspider ID: 14094
• Unique Ingredient Identifier: PF5DZW74VN
• Wikipedia Title: Calcium_hydroxide
• EC Number: 215-137-3
• CAS Number: 1305-62-0
• CHEBI ID: 31341
• KEGG ID: D01083
• PubChem CID: 14777

PROPERTIES

• pKa: 12.4
• Apperance: white powder
• pKb: 2.37
• Std enthalpy of formation: -987 kJ·mol^-1
• Density: 2.211 g/cm^3, solid
• Flash Point: Non-flammable
• Melting Point: 580 °C (loses water)
• Std molar entropy: 83 J·mol^-1·K^-1
• Odor: odorless
• Refractive Index: 1.574
• Solubility: 0.189 g/100 mL (0 °C) ; 0.173 g/100 mL (20 °C) ; 0.066 g/100 mL (100 °C) in water
• Solubility: Soluble in glycerol and acids. ; Insoluble in alcohol.
• Solubility Product (Ksp): 4.68×10^-6
• European Hazard Symbols: Corrosive (C)
• European Hazard Symbols: Irritant (Xi)
• LD50: 7340 mg/kg (oral, rat) ; 7300 mg/kg (mouse)
• NFPA704:
  

  0

  3

  0
• Risk Statements: R22, R34
• RTECS: EW2800000
• Safety Statements: S2, S24