Sodium Formate
Title: Sodium Formate
CAS Registry Number: 141-53-7
Molecular Formula: CHNaO2
Molecular Weight: 68.01
Percent Composition: C 17.66%, H 1.48%, Na 33.80%, O 47.05%
Line Formula: HCOONa
Properties: White, deliquesc granules or cryst powder; slight odor of formic acid. d 1.92. mp 253°; at higher temp dec into sodium oxalate and hydrogen, then into sodium carbonate. Sol in ~1.3 parts water; sol in glycerol, slightly in alcohol. The aq soln is neutral. pH ~7. Has buffering action. Keep well closed.
Melting point: mp 253°
Density: d 1.92
Use: In dyeing and printing fabrics; also in anal. chemistry as a precipitant for the "noble" metals. Solubilizes trivalent metal ions in soln by forming complex ions. Buffering action adjusts the pH of strong mineral acids to higher values.
Therap-Cat: Caustic, astringent.
Keywords: Astringent.

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