Chromium(III) 2-ethylhexanoate

Chromium(III) 2-ethylhexanoate, C24H45CrO6, is a coordination complex of chromium and ethylhexanoate. In combination with 2,5-dimethylpyrrole it forms the Phillips selective ethylene trimerisation catalyst[2] (not to be confused with Phillips catalyst), used in the industrial production of linear alpha olefins, particularly 1-hexene or 1-octene.[3]

Chromium(III) 2-ethylhexanoate
Names
IUPAC name
Chromium(3+) 2-ethylhexanoate
Other names
Chromium(3+) tris(2-ethylhexanoate)
2-Ethylhexanoic acid chromium(III) salt
AR-1I2320
CID103012
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.020.326
EC Number
  • 222-357-3
  • InChI=1S/3C8H16O2.Cr/c3*1-3-5-6-7(4-2)8(9)10;/h3*7H,3-6H2,1-2H3,(H,9,10);/q;;;+3/p-3 checkY
    Key: WBKDDMYJLXVBNI-UHFFFAOYSA-K checkY
  • CCCCC(CC)C(=O)[O-].CCCCC(CC)C(=O)[O-].CCCCC(CC)C(=O)[O-].[Cr+3]
Properties
C24H45CrO6
Molar mass 481.6 g/mol
Density 1.01 g/cm3
soluble in mineral spirits
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Harmful by inhalation, in contact with skin and if swallowed, Irritating to eyes, respiratory system and skin
GHS labelling:
GHS07: Exclamation markGHS08: Health hazard
Warning
H302, H312, H315, H317, H319, H361
P201, P202, P261, P264, P270, P272, P280, P281, P301+P312, P302+P352, P305+P351+P338, P308+P313, P312, P321, P322, P330, P332+P313, P333+P313, P337+P313, P362, P363, P405, P501
Flash point 110 °C (230 °F; 383 K)
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 1 mg/m3[1]
REL (Recommended)
 TWA 0.5 mg/m3[1]
IDLH (Immediate danger)
 250 mg/m3[1]
Safety data sheet (SDS) MSDS
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

References
  1. NIOSH Pocket Guide to Chemical Hazards. "#0141". National Institute for Occupational Safety and Health (NIOSH).
  2. Naji-Rad, Ebtehal; Gimferrer, Martí; Bahri-Laleh, Naeimeh; Nekoomanesh-Haghighi, Mehdi; Jamjah, Roghieh; Poater, Albert (24 May 2018). "Exploring Basic Components Effect on the Catalytic Efficiency of Chevron-Phillips Catalyst in Ethylene Trimerization". Catalysts. 8 (6): 224. doi:10.3390/catal8060224. hdl:10256/15519.
  3. Agapie, Theodor (April 2011). "Selective ethylene oligomerization: Recent advances in chromium catalysis and mechanistic investigations". Coordination Chemistry Reviews. 255 (7–8): 861–880. doi:10.1016/j.ccr.2010.11.035.
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