Cadmium acetate

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Cadmium acetate
Cadmium acetate.png
Names
IUPAC name
Cadmium acetate
Other names
Cadmium diacetate
Identifiers
3D model (Jmol)
ChemSpider
ECHA InfoCard 100.008.049
EC Number 208-853-2
RTECS number AF7505000
UNII
Properties
Cd(CH3COO)2 (anhydrous)
Cd(CH3COO)2·2H2O (dihydrate)
Molar mass 230.500 g/mol (anhydrous)
266.529 g/mol (dihydrate)
Appearance colorless crystals (anhydrous)
white crystals (dihydrate)
Odor acetic acid
Density 2.341 g/cm3 (anhydrous)
2.01 g/cm3 (dihydrate)
Melting point 255 °C (491 °F; 528 K) (anhydrous) dihydrate decomposes at 130°C [1]
soluble (anhydrous), very soluble (dihydrate)
Solubility soluble in methanol, ethanol (anhydrous)
soluble in ethanol (dihydrate)
-83.7·10−6 cm3/mol
Structure
monoclinic
Hazards
R-phrases (outdated) R20/21/22
S-phrases (outdated) (S2) S22[2]
NFPA 704
Flammability code 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g., canola oil Health code 3: Short exposure could cause serious temporary or residual injury. E.g., chlorine gas Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
US health exposure limits (NIOSH):
PEL (Permissible)
[1910.1027] TWA 0.005 mg/m3 (as Cd)[3]
REL (Recommended)
Ca[3]
IDLH (Immediate danger)
Ca [9 mg/m3 (as Cd)][3]
Related compounds
Other anions
Cadmium fluoride
Cadmium chloride
Cadmium bromide
Cadmium iodide
Other cations
Zinc acetate
Mercury(II) acetate
Silver acetate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YesYN ?)
Infobox references

Cadmium acetate is the chemical compound with the formula Cd(CH3CO2)2. This colourless solid is classified coordination polymer, featuring acetate ligands interconnecting cadmium centers. The compound exists in anhydrous form and as a dihydrate. It forms by treating cadmium oxide with acetic acid:[2][4]

CdO + 2 CH3COOH → Cd(CH3COO)2 + H2O

Uses[edit]

Cadmium acetate is used for glazing ceramics and pottery; in electroplating baths, in dyeing and printing textiles; and as an analytic reagent for sulfur, selenium and tellurium.[4]

Preparation[edit]

Cadmium acetate is prepared by treating cadmium oxide with acetic acid. The compound may also be prepared by treating cadmium nitrate with acetic anhydride.

Safety[edit]

Cadmium compounds are considered Group 1 carcinogens by the IARC.

References[edit]

  1. ^ Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, FL: CRC Press. p. 447. ISBN 0-8493-0594-2. 
  2. ^ a b Gangolli, S. (1999). The Dictionary of Substances and Their Effects. London: Royal Society of Chemistry. pp. 12–13. Retrieved 2009-03-29. 
  3. ^ a b c "NIOSH Pocket Guide to Chemical Hazards #0087". National Institute for Occupational Safety and Health (NIOSH). 
  4. ^ a b Patnaik, Pradyot (2003). Handbook of Inorganic Chemical Compounds. McGraw-Hill Professional. pp. 143–144. ISBN 0-07-049439-8. Retrieved 2009-03-29.