Table 4-2Physical and Chemical Properties of Cadmium and Compoundsa

PropertyCadmiumCadmium carbonate
Molecular weight112.41b172.42b
ColorSilver-whitebWhitec
Physical stateLustrous metalbPowder or rhombohedral leafletsb
Melting point321 °CbDecomposes at 357 °C
Boiling point765 °CbNo data
Density at 20 °C8.65 g/cm3 at 25 °Cb4.58 g/cm3 f
OdorOdorlessNo data
Odor threshold:
  WaterNo dataNo data
  AirNo dataNo data
Solubility:
  Water at 20 °CInsolublebInsolublef
  Organic solventsAcids, NH4NO3fAcids, especially HNO3, concentrated NH4 solutionc
Partition coefficients:
  Log KowNo dataNo data
  Log KocNo dataNo data
Vapor pressure7.5×10−3 mmHg at 257 °CNo data
Henry's law constant at 25 °CNo dataNo data
Autoignition temperature250 °CNo data
FlashpointNo dataNo data
Flammability limitsNo dataNo data
Conversion factorsNo dataNo data
Explosive limitsNo dataNo data
Molecular weight183.32128.41b
ColorWhitecDark brownb
Physical stateRhombohedral crystalsbInfusible powder or cubic crystalsb
Melting point568 °CbDecomposes at 950 °C
Boiling point960 °CbDecomposes at 950 °C
Density at 20 °C4.047g/cm3 at 25 °CeCrystals 8.15 g/cm3; amorphous powder 6.95 g/cm3c
OdorOdorlesscOdorless
Odor threshold:
  WaterNo dataNo data
  AirNo dataNo data
Solubility:
  Water at 20 °CSolublebInsolubleb
  Organic solventsAcetone, slightly soluble in MEOH and ETOHbDilute acid, slowly soluble in NH4 saltsb
Partition coefficients:
  Log KowNo dataNo data
  Log KocNo dataNo data
Vapor pressure10 mmHg at 656 °Ce, 40 mmHg at 736 °Cd, 760 mmHg at 967 °Cd1 mmHg at 1,000 °Ce; 10 mm Hg at 1149 °C; 40 mm Hg at 1257 °C
Henry's law constant at 25 °CNo dataNo data
Autoignition temperatureNo dataNo data
FlashpointNo dataNo data
Flammability limitsNo dataNo data
Conversion factorsNo dataNo data
Explosive limitsNo dataNo data
Molecular weight208.47b144.48b
ColorColorlesscLight yellow or orangeb; brownc
Physical stateMonoclinic crystals (hydrate)bCubic or hexagonal structureb
Melting point1,000 °Cc1,750 °Cc
Boiling pointNo dataSublimes in N2 at 980 °Cc
Density at 20 °C4.69 g/cm3b4.82 g/cm3, hexagonal structureb, 4.5 g/cm3, cubic structureb
OdorOdorlessNo data
Odor threshold:
  WaterNo dataNo data
  AirNo dataNo data
Solubility:
  Water at 20 °CSolublecSoluble at 1.3 mg/L at 18 °Cb
  Organic solventsInsoluble in alcoholc, acetone, ammoniafConcentrated or warm dilute mineral acidsb
Partition coefficients:
  Log KowNo dataNo data
  Log KocNo dataNo data
Vapor pressure at 20 °CNo dataNo data
Henry's law constant at 25 °CNo dataNo data
Autoignition temperatureNo dataNo data
FlashpointNo dataNo data
Flammability limitsNo dataNo data
Conversion factorsNo dataNo data
Explosive limitsNo dataNo data
a

All information from HSDB 2008, except where noted.

b

O’Neil et al. 2006.

c

Sax and Lewis 2001.

d

Farnsworth 1980.

e

Sax and Lewis 2000.

f

Lide 2005.

All information from HSDB 2008, except where noted.

Sax and Lewis 2001.

Sax and Lewis 2000.

From: 4, CHEMICAL AND PHYSICAL INFORMATION

Cover of Toxicological Profile for Cadmium
Toxicological Profile for Cadmium.
Faroon O, Ashizawa A, Wright S, et al.

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