Title: Potassium Formate
CAS Registry Number: 590-29-4
CAS Name: Formic acid potassium salt
Molecular Formula: CHKO2
Molecular Weight: 84.12
Percent Composition: C 14.28%, H 1.20%, K 46.48%, O 38.04%
Line Formula: HCOOK
Literature References: Environmentally friendly, biodegradable source of potassium ion. Prepn: E. Groschuff,
Ber. 36, 1783 (1903); and complex formation with formic acid: J. Kendall, H. Adler,
J. Am. Chem. Soc. 43, 1470 (1921). Crystal structure: B. F. Mentzen, Y. Oddon,
Inorg. Chim. Acta 43, 237 (1980); J. W. Bats, H. Fuess,
Acta Crystallogr. B36, 1940 (1980). Properties and applications as a secondary refrigerant: A. Aittom?ki, A. Lahti,
Int. J. Refrig. 20, 276 (1997).
Properties: mp 157° (Groschuff); also reported as mp 167.5 ±0.5° (Kendall). d18 1.95. Very sol in water. The aq soln is practically neutral. Exceedingly hygroscopic.
Melting point: mp 157° (Groschuff); mp 167.5 ±0.5° (Kendall)
Density: d18 1.95
Use: Reducing agent; secondary refrigerant; anti-oxidant in oil drilling applications.
