Iron(III) chloride

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Iron(III) chloride (anhydrous)
IUPAC name iron(III) chloride
Other names iron trichloride
molysite
Identifiers
InChI InChI=1/3ClH.Fe/h3*1H;/q;;;+3/p-3
InChIKey RBTARNINKXHZNM-DFZHHIFOAF
Standard InChI InChI=1S/3ClH.Fe/h3*1H;/q;;;+3/p-3
Standard InChIKey RBTARNINKXHZNM-UHFFFAOYSA-K
CAS number [7705-08-0]
EC number 231-729-4
RTECS LJ9100000
ChemSpider 22792
Properties[1]
Chemical formula FeCl3
Molar mass 162.20 g mol−1
Appearance dark brown solid, hygroscopic
Density 2.898 g cm−3
Melting point

306 °C

Boiling point

315 °C decomp.

Solubility in water 74.4 g/100 ml (0 °C)
535.7 g/100 ml (100 °C)
Structure[2]
Coordination geometry Octahedral (Fe3+)
Hazards[3][Note 1]
Material safety data sheet (MSDS) ICSC 1499
EU index number not listed
GHS pictograms Corr. Met. 1; Skin Corr. 1C; Eye Dam. 1Acute Tox. 4 (oral)
GHS signal word DANGER
GHS hazard statements H290, H302, H314, H318
GHS precautionary statements P234, P260, P264, P270, P273, P280, P301+312, P301+330+331, P303+361+353, P363, P304+340, P310, P321, P305+351+338
Flash point non-flammable
Related compounds
Other anions Iron(III) fluoride
Iron(III) bromide
Other cations Iron(II) chloride
Ruthenium(III) chloride
Osmium(III) chloride
Other Lewis acids Aluminium chloride
Boron trifluoride
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Iron(III) chloride hexahydrate
IUPAC name iron(III) chloride—water (1/6)
Identifiers
InChI InChI=1/3ClH.Fe.6H2O/h3*1H;;6*1H2/q;;;+3;;;;;;/p-3
InChIKey NQXWGWZJXJUMQB-DFZHHIFOAS
Standard InChI InChI=1S/3ClH.Fe.6H2O/h3*1H;;6*1H2/q;;;+3;;;;;;/p-3
Standard InChIKey NQXWGWZJXJUMQB-UHFFFAOYSA-K
CAS number [10025-77-1]
EC number 231-729-4
RTECS LJ9100000
ChemSpider 23195
Properties[1]
Chemical formula FeCl3·6H2O
Molar mass 270.30 g mol−1
Appearance yellow-brown crystals, deliquescent
Melting point

37 °C

Boiling point

280 °C decomp.

Solubility in water 91.9 g/100 ml (20 °C)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Iron(III) chloride, FeCl3, also known as ferric chloride, is commodity chemical. As the hydrated salt (nominally a hexahydrate, FeCl3·6H2O), it is used in water purification and as an etchant for printed circuit boards.[2] The anhydrous compound is a moderately strong Lewis acid and is used in organic synthesis.

Notes and references

Notes

  1. An alternative GHS classification from the Japanese GHS Inter-ministerial Committee (2006)[4] notes the possibility of respiratory tract irritation from FeCl3 and differs slightly in other respects from the classification used here.

References

  1. 1.0 1.1 CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p B-108. ISBN 0-8493-0462-8.
  2. 2.0 2.1 Greenwood, Norman N.; Earnshaw, A. Chemistry of the Elements; Pergamon: Oxford, 1984; p 1259. ISBN 0-08-022057-6.
  3. HSNO Chemical Classification Information Database, <http://www.ermanz.govt.nz/Chemicals/ChemicalDisplay.aspx?SubstanceID=10764> (accessed 19 September 2010), New Zealand Environmental Risk Management Authority.
  4. GHS classification – ID 831, <http://www.safe.nite.go.jp/english/ghs_index.html#results> (accessed 19 September 2010), Japanese GHS Inter-ministerial Committee, 2006.

External links

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