calcium dihydroxide

• ChemBase ID: 105620
• Molecular Formular: CaO2
• Molecular Mass: 72.0768
• Monoisotopic Mass: 71.95242022
• SMILES: [OH-].[OH-].[Ca+2]
• Canonical SMILES: [OH-].[OH-].[Ca+2]
• InChI: InChI=1S/Ca.2H2O/h;2*1H2/q+2;;/p-2
• InChIKey: AXCZMVOFGPJBDE-UHFFFAOYSA-L

NAMES AND DATABASE IDS

Names

• IUPAC name: calcium dihydroxide; calcium dioxidanide
• IUPAC Traditional name: calcium dihydroxide; calcium(2+) bis(OH-); calcium dioxidanide
• Synonyms: Slaked lime; Milk of lime; Calcium(II) hydroxide; Pickling lime; Hydrated lime; Calcium hydroxide; Calcium hydroxide, ACS; Calcium hydroxide; CALCIUM HYDROXIDE ACS REAGENT GRADE; Lime; Quicklime; CALCIUM OXIDE; 氢氧化钙, ACS; 氢氧化钙

Database IDs

• CAS Number: 1305-78-8; 1305-62-0
• EC Number: 215-138-9; 215-137-3
• MDL Number: MFCD00010901
• Merck Index: 141673
• PubChem SID: 162092817
• PubChem CID: 6093208; 14777
• CHEBI ID: 31341
• Chemspider ID: 14094
• KEGG ID: D01083
• Unique Ingredient Identifier: PF5DZW74VN
• Wikipedia Title: Calcium_hydroxide

CALCULATED PROPERTIES

• Acid pKa: 15.7
• H Acceptors: 1
• H Donor: 1
• LogD (pH = 5.5): -0.652
• LogD (pH = 7.4): -0.652
• Log P: -0.652
• Molar Refractivity: 13.9149 cm^3
• Polarizability: 1.1434737 Å^3
• Polar Surface Area: 0.0 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Solubility: 0.189 g/100 mL (0 °C) ; 0.173 g/100 mL (20 °C) ; 0.066 g/100 mL (100 °C) in water; Slightly soluble in water. Soluble in glycerol, acids. Insoluble in alcohol; Soluble in glycerol and acids. ; Insoluble in alcohol.
• Apperance: Powder; white powder
• Melting Point: 2570 °C; 580 °C (loses water); Decomposes at 580 °C (1076 °F)
• Boiling Point: 2850 °C; Decomposes at 580 °C (1076 °F)
• Flash Point: Non-flammable
• Density: 2.211 g/cm^3, solid; 2.24; 2.24 at 20 °C (water = 1); 3.3-3.4 at 20 °C
• Refractive Index: 1.574
• Vapor Pressure: 0 hPa at 20 °C
• pKa: 12.4
• pKb: 2.37
• Odor: odorless
• Std enthalpy of formation: -987 kJ·mol^-1
• Std molar entropy: 83 J·mol^-1·K^-1
• Solubility Product (Ksp): 4.68×10^-6

Safety Information

• Storage Condition: Room Temperature (15-30°C); Room Temperature (15-30°C), Desiccate
• Storage Warning: Air Sensitive
• RTECS: EW2800000; EW3100000
• European Hazard Symbols: Corrosive (C); Irritant (Xi)
• UN Number: 1759; 1910; UN3262
• Hazard Class: 8
• Packing Group: II; III
• Australian Hazchem: 2X
• Risk Statements: 34; R:34; R22, R34
• Safety Statements: 26-36/37/39-45-60; 26-36/37/39-60; S:26-27/28-36/37/39-46-64; S2, S24
• EU Classification: C10
• EU Hazard Identification Number: 8B
• Emergency Response Guidebook(ERG) Number: 154; 157
• TSCA Listed: 是
• GHS Pictograms: GHS05
• NFPA704:
  

  0

  3

  0
• LD50: 7340 mg/kg (oral, rat) ; 7300 mg/kg (mouse)
• GHS Hazard statements: H314-H318
• GHS Precautionary statements: P260-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501A

Product Information

• Purity: ~97%; ~99%; 95%; 95.0% min
• Grade: ACS; REAGENT

DETAILS

MP Biomedicals - 02193551

ACS Reagent
Purity: ~99%

MP Biomedicals - 02193802

Purity: ~97%