Iodoform

CHI₃Molar mass393.732 g·mol Appearance Pale, light yellow, opaque crystals OdorSaffron-like, sweetish Density4.008 g/cm Melting point119 °C (246 °F; 392 K) Boiling point218 °C (424 °F; 491 K)

Solubility in water

100 mg/L Solubility in diethyl ether136 g/L Solubility in acetone120 g/L Solubility in ethanol78 g/L log P3.118

Henry's law
constant (k_H)

3.4 μmol·Pa·kg

Magnetic susceptibility (χ)

−117.1·10 cm/mol Structure

Crystal structure

Hexagonal

Molecular shape

Tetrahedral at CThermochemistry

Heat capacity(C)

157.5 J/(K·mol)

Std enthalpy of
formation(Δ_fH₂₉₈)

180.1 – 182.1 kJ/mol

Std enthalpy of
combustion(Δ_cH₂₉₈)

−716.9 – −718.1 kJ/mol Pharmacology

ATC code

D09AA13 (WHO) Hazards GHS labelling:

Pictograms

Signal word

Warning

Hazard statements

H315, H319, H335

Precautionary statements

P261, P280, P305+P351+P338NFPA 704 (fire diamond)

2

1

Flash point204 °C (399 °F; 477 K) Lethal dose or concentration (LD, LC):

LD₅₀ (median dose)

355 mg/kg (oral, rat)
1180 mg/kg (dermal, rat)
1.6 mmol/kg(s.c., mouse)

NIOSH (US health exposure limits):

PEL (Permissible)

none

REL (Recommended)

0.6 ppm (10 mg/m)

IDLH (Immediate danger)

N.D. Related compounds

Related compounds

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

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Iodoform (also known as triiodomethane) is the organoiodine compound with the chemical formulaC H I₃. It is a pale yellow, crystalline, volatile substance, with a penetrating and distinctive sweetish and chloroform-like 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.