Chinese name: sodium formate
English name: Sodium formate
CAS: 141-53-7
EINECS number: 205-488-0
Molecular formula: CHNaO2
MDL number: MFCD00013101
Molecular weight: 68.01
Appearance: Sodium formate (141-53-7) is a white powder. Melting point 253℃. The relative density is 1.919. Soluble in water and glycerin, slightly soluble in ethanol. Insoluble in ether. Sodium formate decomposes at high temperatures into sodium oxalate and hydrogen, and finally into sodium carbonate. It has a slight formic acid odor and is absorbent.
Solubility: soluble in water and glycerin, slightly soluble in ethanol, insoluble in ether.
Melting point: 259-262 °C(lit.)
Boiling point: 360 °C
Density: 1.16 g/mL at 20 °C
Vapor pressure: 0Pa at 25℃
Storage conditions: 2-8°C
Solubility: H2O: 8 M at 20 °C, clear, colorless
Acidity coefficient (pKa) : 3.86[at 20 ℃]
Form: crystalline powder
Specific gravity: 1.92
Color: White to off-white
PH value: 7.0-8.5 (50g/l, H2O, 20℃)
Odor: A slight smell of formic acid
Acid-base indicator discoloration ph: range 7-8.5
Water solubility: Soluble in water
Sensitivity: hygroscopicity
Hydrolysis sensitivity 0: forms stable aqueous solutions
Maximum wavelength (λmax)λ: 260 nm Amax: 0.02
λ: 280 nm Amax: 0.01
Merck: 14,8621
BRN: 3595134
Stability: Stable. Incompatible with strong oxidants and acids. Keep away moisture.
LogP: -2.1 at 20℃
category
Organic raw materials: salts of carboxylate and its derivatives
Use 1
Used in alkyd resin coatings, plasticizers, high explosives, acid resistant materials, aviation lubricating oil, adhesive additives
Preparation method
Method one
It is formed by the reaction of carbon monoxide and sodium hydroxide at 160℃ and 2MPa.
Method 2
1. It is obtained by the reaction of carbon monoxide and sodium hydroxide at 150-170℃ and about 2MPa. In fact, the production process of sodium formate is part of the production of oxalic acid, and the concentration of sodium hydroxide solution used for the absorption reaction is 25%-30%. Sodium formate can also be prepared by the reaction of formic acid with sodium oxyoxide or sodium bicarbonate. Raw material consumption quota: carbon monoxide (> 28%) 1630kg/t, caustic soda (> 30%) 2160kg/t. 2. Pentaerythritol byproducts.
China
