Fluoroform

Title: Fluoroform
CAS Registry Number: 75-46-7
CAS Name: Trifluoromethane
Molecular Formula: CHF3
Molecular Weight: 70.01
Percent Composition: C 17.16%, H 1.44%, F 81.41%
Literature References: Prepd from CHCl3 and HF: Meslans, Compt. Rend. 110, 717 (1890); Valentiner, US 643835 (1900); Ruff, Ber. 69, 299 (1936); Whallay, J. Soc. Chem. Ind. London 66, 429 (1947); Kwasnik in Handbook of Preparative Inorganic Chemistry vol. 1, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1963) pp 204-205. Early industrial prepn: Pearlson in Fluorine Chemistry vol. I, J. H. Simons, Ed. (Academic Press, New York, 1950) p 467.
Properties: Colorless, odorless gas. Stable up to 1150°. Chemically very inert. d (solid) 1.935. d (liq; -100°) 1.52. mp -160°. bp -84.4°. Critical temp 33°, critical pressure 47 atm, critical density 0.516. May be stored over water. Practically non-toxic: N. V. Sidgwick, The Chemical Elements and Their Compounds vol. II (Oxford, 1950) p 1130.
Melting point: mp -160°
Boiling point: bp -84.4°
Density: d (solid) 1.935; d (liq; -100°) 1.52; critical density 0.516
CAUTION: May be slightly irritating to respiratory tract, and, in high concns, narcotic.
Use: Refrigerant for low temps.
Fluoromethane Fluorometholone Fluorosalan Fluorosulfonic Acid Fluorotoluene

Fluoroform
Fluoroform.svg Fluoroform-3D-vdW.png
Identifiers
CAS number 75-46-7 YesY
PubChem 6373
ChemSpider 21106179 YesY
UNII ZJ51L9A260 YesY
EC number 200-872-4
ChEBI CHEBI:24073 N
RTECS number PB6900000
Jmol-3D images Image 1
Properties
Molecular formula CHF3
Molar mass 70.01 g/mol
Appearance Colorless gas
Density 2.946 kg·m-3 (gas, 1 bar, 15 °C)
Melting point -155.2 °C (117.95 K)
Boiling point -82.1°C (191.05 K)
Solubility in water 1 g/l
Solubility in organic solvents Soluble
Vapor pressure 4.38 MPa at 20 °C
kH 0.013 mol.kg-1.bar-1
Acidity (pKa) 25 - 28
Hazards
S-phrases S38
Main hazards Nervous system depression
NFPA 704
NFPA 704.svg
0
2
0
Flash point Non-flammable
 N (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Fluoroform is the chemical compound with the formula CHF3. It is one of the "haloforms", a class of compounds with the formula CHX3 (X = halogen). Fluoroform is used in diverse niche applications and is produced as a by-product of the manufacture of Teflon. It is also generated biologically in small amounts apparently by decarboxylation of trifluoroacetic acid.[1]