Sodium Formate

What Is Sodium Formate

  • Chemical Formula: HCOONa
  • Grade: Industrial grade
  • Appearance: White crystalline powder
  • Sodium Chloride (NaCl)% ≤: 0.2
  • Cas No.: 141-53-7
  • HS Code: 29151210
  • Package: 25kg, 1000kg
  • Description:Sodium formate, also known as formic acid sodium salt, is the simplest organic carboxylate, which is white crystal or powder with a slight smell of formic acid. There are two crystal waters in the crystal, so it is also called sodium formate dihydrate. It is slightly deliquescent and hygroscopic.

Technical Specifications of Formic Acid Sodium Salt in Chemate

Items Index
Appearance White crystalline powder
Sodium Formate % ≥ 98 95
Sodium Chloride (NaCl) % ≤ 0.20 0.20
Organic matter % ≤ 1.0 4.0
Iron (Fe)% ≤ 0.005 0.005
Moisture % ≤ 1.0 2.0

What Are Sodium Formate Uses

  • Used in the production of sodium hydrosulfite, oxalic acid and formic acid, etc.
  • Used in the leather industry as camouflage acid in chrome tanning. It can help protect the leather and improve the uniformity of dye penetration resulting in a high quality leather product.
  • For catalysts and stabilized synthetic agents.
  • Reducing agent in printing and dyeing industry. Aids in the fixation of dyes on fabrics, resulting in vibrant, long-lasting colours.
  • Used as a reagent, disinfectant and mordant for the determination of phosphorus and arsenic.
  • Used as a preservative, used in alkyd resin coatings and plasticizers.
  • Used as explosives, acid-resistant materials, aviation lubricants, adhesive additives.
  • Precipitating agent for heavy metals, which can form complex ions of trivalent metals in solution. It has a buffering effect and can correct the pH value of strong acids.
  • It is an intermediate for the production of formic acid and oxalic acid, used for the production of dimethylformamide, etc.
  • Electrolyte for nickel-cobalt alloy plating.
  • It is used as a concrete quick-setting agent in the construction industry. When sodium formate is added to concrete mixes, it speeds up the hydration process, resulting in faster setting and improved early strength.

How Is Sodium Formate Granular Prepared

Using coke as raw material, the carbon monoxide gas by the process is obtained through the processes of gas generation and dust removal, water washing, decarbonization, and dust removal. After heating and pressurizing, it reacts with sodium hydroxide to form a sodium formate solution, and then evaporates, separates, and dries to form a solid product, sodium formate.

Prepare gas

Lift the coke to the upper part of the gas-making furnace with an electric hoist, and add coke to the furnace from the mouth of the gas-making furnace. Incomplete combustion of coke in the furnace and the air brought in by the fan produce mixed gases such as carbon monoxide, carbonate dioxide, and nitrogen.

Purify

The mixed gas from the gas generator enters the cyclone dust collector, and most of the small solid particles entrained by the mixed gas enter the scrubber. The scrubber uses water as the washing liquid to further remove the solid particles in the mixed gas, and then enters the alkali washing tower, using sodium hydroxide solution as the circulating absorption liquid. Part of the carbon dioxide gas in the mixed gas is removed, and then the moisture entrained in the gas is separated by a hydrocyclone. Then enter the electrostatic precipitator, remove the remaining small solid particles through static electricity, and purify the mixed gas again.

Compression

The purified mixed gas enters the compressor for two-stage compression, and the pressure is raised to 2.0-2.2Mpa. In enter the mixer through the oil-water separator and mixes with the lye from the preheater. Under a certain temperature and pressure, the lye reacts with most of the carbon dioxide gas, and obtains the carbon monoxide gas required for the process.

Desulfurization

In the production of sodium formate, the commonly used desulfurization method is zinc oxide method. Zinc oxide is a contact reaction type desulfurizer with large inner surface and high sulfur capacity, which can be used as a single desulfurizer.

Synthesis

Heat the generated monoxide gas and nitrogen to 140℃-150℃ to enter the synthesis reactor. In the synthesis reactor, carbon monoxide reacts with sodium hydroxide to form sodium formate solution. The mixture of sodium formate solution, nitrogen and trace carbon monoxide gas is decompressed and then enters the hydrocyclone for gas-liquid separation. The sodium formate solution is pumped into the storage tank for use, and the mixed gas is discharged into the atmosphere.

Evaporative separation

The sodium formate solution in the storage tank is pumped to the evaporator, and most of the water is evaporated to form sodium formate solution with a content of 70%-80%. Then it is pumped to the centrifuge, and the centrifuge to get solid sodium formate.

The Main Applications of Sodium Hydrosulfite Produced by Sodium Formate

  1. In the textile industry, used as a reducing agent for vat dyeing, vat bleaching agent, vat dye printing auxiliary, scouring and bleaching agent for silk, stripping agent for dyed products, as well as cleaning agent for dying vats.
  2. In the pulp and paper industry, it is used as bleaching agent for mechanical pulp, thermomechanical pulp and deinked pulp.
  3. In the food industry, it is used as bleaching agent and food preservative for sugar, candy, candied, fruit, biscuits, vermicelli, etc.
  4. As a reduction bleaching agent, it is widely used in the bleaching of kaolin, the bleaching and reduction whitening of fur, the bleaching of bamboo products and straw products, etc.
  5. Used as reducing agent in the chemical industry.

The Main Applications of Sodium Hydrosulfite Produced by Sodium Formate

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