Cadmium Stearate

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Cadmium stearate
Cadmium stearate.svg
Names
IUPAC name
Cadmium dioctadecanoate
Other names
Cadmium distearate; Cadmium(II) stearate; Cadmium(II) dioctadecanoate
Identifiers
CAS Number
  • 2223-93-0 ☑Y
3D model (JSmol)
  • Interactive image
ChemSpider
  • 15818
EC Number
  • 218-743-6
PubChem CID
  • 16681
UNII
  • GBI2ILV46J ☑Y
Properties
Chemical formula
 C36H70CdO4
Molar mass 679.366 g·mol−1
Appearance White powder
Density 1.80 g/cm3
Melting point 134 °C (273 °F; 407 K)
Hazards
NFPA 704 (fire diamond)
Flammability code 0: Will not burn. E.g. waterHealth code 4: Very short exposure could cause death or major residual injury. E.g. VX gasReactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no codeNFPA 704 four-colored diamond
0
4
0
NIOSH (US health exposure limits):
PEL (Permissible)
 [1910.1027] TWA 0.005 mg/m3 (as Cd)[1]
REL (Recommended)
 Ca[1]
IDLH (Immediate danger)
 Ca [9 mg/m3 (as Cd)][1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Tracking categories (test):
  • SizeSet

Cadmium stearate is a salt with the formula Cd(O2CC17H35)2. Classified as a metallic soap, this a white solid is used as a lubricant and as a heat- and light-stabilizer in polyvinyl chloride. The use of cadmium stearate is being phased out because of its toxicity.

Synthesis

The compound is produced by the reaction of cadmium chloride with sodium stearate or heating stearic acid and cadmium oxide or hydroxide.[2] Also, an exchange reaction between cadmium sulfate and sodium stearate:

[math]\displaystyle{ \mathsf{ CdSO_4 + 2NaC_{18}H_{35}O_2 \ \xrightarrow{}\ Cd(C_{18}H_{35}O_2)_2\downarrow + Na_2SO_4 } }[/math]

Safety

Like other cadmium compounds, cadmium stearate is toxic.[3] Cadmium stearate is also carcinogen.[4]

References

  1. ↑ 1.0 1.1 1.2 NIOSH Pocket Guide to Chemical Hazards. "#0087". National Institute for Occupational Safety and Health (NIOSH). https://www.cdc.gov/niosh/npg/npgd0087.html. 
  2. ↑ Nora, Angelo; Szczepanek, Alfred; Koenen, Gunther (2001). "Ullmann's Encyclopedia of Industrial Chemistry". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a16_361. 
  3. ↑ 40 C.F.R.: Appendix A to Part 355—The List of Extremely Hazardous Substances and Their Threshold Planning Quantities (July 1, 2008 ed.). Government Printing Office. http://edocket.access.gpo.gov/cfr_2008/julqtr/pdf/40cfr355AppA.pdf. Retrieved October 29, 2011. 
  4. ↑ Cadmium stearate. MSDS



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Categories: [Cadmium compounds] [Stearates]

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