Calcium Acetate

Title: Calcium Acetate
CAS Registry Number: 62-54-4
CAS Name: Acetic acid calcium salt
Trademarks: Phos-ex (Vitaline); PhosLo (Nabi)
Molecular Formula: C4H6CaO4
Molecular Weight: 158.17
Percent Composition: C 30.37%, H 3.82%, Ca 25.34%, O 40.46%
Line Formula: Ca(CH3COO)2
Literature References: The technical product was originally known as brown acetate of lime or gray acetate of lime. Prepn and analysis of acetate of lime: Stillwell, Gladding, J. Am. Chem. Soc. 4, 94 (1882); T. S. Gladding, Ind. Eng. Chem. 1, 250 (1909). Distillation to produce acetone: E. G. R. Ardagh et al., ibid. 16, 1133 (1924). Electrolytic prepn: H. Schmidt, Z. Anorg. Allg. Chem. 270, 188 (1952). Analysis of hydrated forms: J. Panzer, J. Chem. Eng. Data 7, 140 (1962). Toxicity study: Smyth et al., Am. Ind. Hyg. Assoc. J. 30, 470 (1969). Clinical evaluation in hyperphosphatemia: W. Y. Qunibi et al., Kidney Int. 65, 1914 (2004).
Properties: Very hygroscopic, rod-shaped crystals. On heating above 160° dec to acetone and CaCO3. d 1.50. Sol in water; slightly sol in methanol. Practically insol in ethanol, acetone, benzene. Keep well closed.
Density: d 1.50
Derivative Type: Monohydrate
CAS Registry Number: 5743-26-0
Properties: Needles, granules or powder. Does not lose all its water below 150°. Sol in water; slightly sol in alcohol. pH of 0.2 molar aq soln 7.6. LD50 orally in rats: 4.28 g/kg (Smyth).
Toxicity data: LD50 orally in rats: 4.28 g/kg (Smyth)
Use: Manuf of acetic acid, acetone; in dyeing, tanning, and curing skins; in lubricants; as food stabilizer; as corrosion inhibitor.
Therap-Cat: Antihyperphosphatemic.
Keywords: Antihyperphosphatemic.
Calcium Acetylsalicylate Calcium Aluminosilicate Calcium Arsenate Calcium Arsenite Calcium Bisulfite, Solution

Calcium acetate
Calcium acetate.png
Ca-acetate.png
Calcium acetate crystals
Identifiers
Abbreviations Ca(OAc)2
CAS number 62-54-4 YesY, 5743-26-0 (monohydrate) YesY
PubChem 6116
ChemSpider 5890 YesY
UNII Y882YXF34X YesY
DrugBank DB00258
ChEBI CHEBI:3310 YesY
ChEMBL CHEMBL1200800 N
RTECS number AF7525000
ATC code A12AA12,(anhydrous)
Jmol-3D images Image 1
Properties
Molecular formula C4H6CaO4
Molar mass 158.17 g mol−1
Appearance White solid
hygroscopic
Odor slight acetic acid odor
Density 1.509 g/cm3
Melting point 160 °C[1] (decomposition to CaCO3 + acetone)
Solubility in water 37.4 g/100 mL (0 °C)
34.7 g/100 mL (20 °C)
29.7 g/100 mL (100 °C)
Solubility slightly soluble in methanol
insoluble in acetone, ethanol and benzene
Acidity (pKa) 6.3-9.6
Refractive index (nD) 1.55
Hazards
NFPA 704
NFPA 704.svg
1
1
0
Autoignition temperature 680-730 °C
LD50 4280 mg/kg (oral, rat)
 N (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Calcium acetate is a chemical compound which is a calcium salt of acetic acid. It has the formula Ca(C2H3O2)2. Its standard name is calcium acetate, while calcium ethanoate is the systematic name. An older name is acetate of lime. The anhydrous form is very hygroscopic; therefore the monohydrate (Ca(CH3COO)2•H2O) is the common form.