Iodoform
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For use of the term "iodoform" in cryptography, see Group key.
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.
Quick Facts Names, Identifiers ...
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Names | |||
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Preferred IUPAC name
Triiodomethane | |||
Other names | |||
Identifiers | |||
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3D model (JSmol) |
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1697010 | |||
ChEBI | |||
ChEMBL | |||
ChemSpider |
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ECHA InfoCard | 100.000.795 | ||
EC Number |
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KEGG |
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MeSH | iodoform | ||
PubChem CID |
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RTECS number |
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UNII | |||
CompTox Dashboard (EPA) |
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Properties | |||
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] | ||
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 | ||
−117.1·10−6 cm3/mol | |||
Structure | |||
Hexagonal | |||
Tetrahedral at C | |||
Thermochemistry | |||
Heat capacity (C) |
157.5 J/(K·mol) | ||
Std enthalpy of formation (ΔfH⦵298) |
180.1 – 182.1 kJ/mol | ||
Std enthalpy of combustion (ΔcH⦵298) |
−716.9 – −718.1 kJ/mol | ||
Pharmacology | |||
D09AA13 (WHO) | |||
Hazards | |||
GHS labelling: | |||
Warning | |||
H315, H319, H335 | |||
P261, P280, P305+P351+P338 | |||
NFPA 704 (fire diamond) | |||
Flash point | 204 °C (399 °F; 477 K) | ||
Lethal dose or concentration (LD, LC): | |||
LD50 (median dose) |
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NIOSH (US health exposure limits): | |||
PEL (Permissible) |
none[5] | ||
REL (Recommended) |
0.6 ppm (10 mg/m3)[5] | ||
IDLH (Immediate danger) |
N.D.[5] | ||
Related compounds | |||
Related compounds |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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