Iodoform

Iodoform
Names
Preferred IUPAC name
Triiodomethane
Other names
  • Iodoform[1]
  • Carbon hydride triiodide
  • Carbon triiodide[2]
Identifiers
CAS Number
3D model (JSmol)
Beilstein Reference
1697010
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.000.795
EC Number
  • 200-874-5
KEGG
MeSH iodoform
PubChem CID
RTECS number
  • PB7000000
UNII
InChI
  • InChI=1S/CHI3/c2-1(3)4/h1H Y
    Key: OKJPEAGHQZHRQV-UHFFFAOYSA-N Y
SMILES
  • IC(I)I
Properties
Chemical formula
CHI3
Molar mass 393.732 g·mol−1
Appearance Pale, light yellow, opaque crystals
Odor Saffron-like[3]
Density 4.008 g/cm3[3]
Melting point 119 °C (246 °F; 392 K)[3]
Boiling point 218 °C (424 °F; 491 K)[3]
Solubility in water
100 mg/L[3]
Solubility in diethyl ether 136 g/L
Solubility in acetone 120 g/L
Solubility in ethanol 78 g/L
log P 3.118
Henry's law
constant (kH)
3.4 μmol·Pa−1·kg−1
Magnetic susceptibility (χ)
−117.1·10−6 cm3/mol
Structure
Crystal structure
Hexagonal
Molecular shape
Tetrahedral at C
Thermochemistry
Heat capacity (C)
157.5 J/(K·mol)
Std enthalpy of
formation fH298)
180.1 – 182.1 kJ/mol
Std enthalpy of
combustion cH298)
−716.9 – −718.1 kJ/mol
Pharmacology
D09AA13 (WHO)
Hazards
GHS labelling:
Pictograms
Signal word
Warning
Hazard statements
H315, H319, H335
Precautionary statements
P261, P280, P305+P351+P338
NFPA 704 (fire diamond)
2
1
1
Flash point 204 °C (399 °F; 477 K)
Lethal dose or concentration (LD, LC):
  • 355 mg/kg (oral, rat)[3]
  • 1180 mg/kg (dermal, rat)[3]
  • 1.6 mmol/kg(s.c., mouse)[5]
NIOSH (US health exposure limits):
PEL (Permissible)
none[4]
REL (Recommended)
0.6 ppm (10 mg/m3)[4]
IDLH (Immediate danger)
N.D.[4]
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

Iodoform (also known as triiodomethane) is the organoiodine compound with the chemical formula CHI3. It is a pale yellow, crystalline, volatile substance, with a penetrating and distinctive odor (in older chemistry texts, the smell is sometimes referred to as that of hospitals, where the compound is still commonly used) and, analogous to chloroform, sweetish taste. It is occasionally used as a disinfectant.

  1. ^ "Front Matter". Nomenclature of Organic Chemistry: IUPAC Recommendations and Preferred Names 2013 (Blue Book). Cambridge: The Royal Society of Chemistry. 2014. p. 661. doi:10.1039/9781849733069-FP001. ISBN 978-0-85404-182-4. The retained names 'bromoform' for HCBr3, 'chloroform' for HCCl3, and 'iodoform' for HCI3 are acceptable in general nomenclature. Preferred IUPAC names are substitutive names.
  2. ^ "Iodoform".
  3. ^ a b c d e f g Record in the GESTIS Substance Database of the Institute for Occupational Safety and Health
  4. ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0343". National Institute for Occupational Safety and Health (NIOSH).
  5. ^ Merck Index, 12 Edition, 5054