Oxalic Acid for Sale

• In cleaning industry. Oxalic acid is used as a reducing agent and bleaching agent, which can be used for the cleaning and processing of ceramic products, floor tiles, metal and marble surfaces, as well as the bleaching of texiles.
• In the fine chemical industry. Industrial oxalic acid can be further processed into high-purity and electronic grade refined oxalic acid, oxalate and other fine chemical products. Used in lithium battery cathode materials, cobalt salts, electronic ceramics, magnetic materials, alloy powder materials, PTA catalyst recovery and other new energy, new materials, energy conservation and environmental protection fields.
• In the organic synthesis industry. Ethanedioic acid is used in the production of hydroquinone, pentaerythritol, cobalt oxalate, nickel oxalate, gallic acid and other chemical products, as well as the production of pure dextrin and glucose by starch hydrolysis.
• In the pharmaceutical industry. Oxalic acid for sale in Chemate can be used in the production of chlortetracycline, circin, oxytetracycline, tetracycline, streptomycin, borneol, vitamin B12, phenobarbital and other drugs.
• In the plastic industry. It is used in the production of polyvinyl chloride, amino plastic, urea-formaldehyde plastic, paint flakes, etc…
• In the printing and dyeing industry. Oxalic acid can be replace acetic acid and used as a color-developing auxiliary and bleaching agent for pigments and dyes. It is also used as a dye reducing agent, to produce salt-based green products.
• In the metallurgical industry. Ethanedioic acid is used in the production of cobalt-molybdenum-aluminum catalysts, solvents for extracting rare metals, the precipitation, separation and extraction of high-end rare earth metals such as lanthanum and europium.
• In light industry. Oxalic acid is used for rust removal, bleaching and descaling in leather, wood, aluminum products, marble polishing, etc…
• In electronics industry. Oxalaic acid is used in the preparation of ceramic capacitor raw materials and the preparation of cleaning liquid for electronic equipment.
• In oleochemistry industry. Oxalic acid is used as a refined preparation of terpineol, glycerin and stearate. In addition, ethanedioic acid is also used in the film processing of aluminum alloys, the manufacturer of cemented carbides, alloy cutter heads, as well as steel and soil analysis reagents.

• Oxalic acid is a colorless columnar crystal, soluble in water but insoluble in organic solvents such as, ether.
• Oxalate has a strong coordination effect and is another type of metal chelating agent in plant-derived foods. When oxalic acid is combined with some alkaline earth metal elements, its solubility is greatly reduced. For example, calcium oxalate is almost insoluble in water. Therefore, the presence of oxalic acid has a great influence on the bioavailability of essential minerals. When oxalic acid is combined with some transition metal elements, due to the coordination effect of oxalic acid, a soluble complex is formed and its solubility is greatly increased.
• Oxalic acid begins to sublime at 100℃, rapidly sublimates at 125℃, sublimates in large quantities at 157℃ and begins to decompose.
• Ethanedioic acid can react with bases, and undergo esterification, acid halide and amidation reactions. A reduction reaction can also occur, and a decarboxylation reaction occur when heated. Anhydrous oxilic acid has hygroscopic properties.
• Oxalic acid acidity. Ethanedioic acid is a strong acid, which is 100,000 times stronger than acetic acid. It has the general properties of acid, can neutralize with alkali, can change color of the indicator and release carbon dioxide by reacting with carbonate.
• Oxalate has strong redox properties, and can easily be oxidized to carbon dioxide and water when interacting with oxidants. It can discolor the acid potassium permanganate solution and reduce it to divalent manganese ions. Ethanedioic acid can also wash away ink stains on the cloth stips.
• Oxalic acid will decompose into carbon dioxide, carbon monoxide and water at 189.5℃ or in the presence of concentrated sulfuric acid.
• Oxalate is poisonous, which is irritating and corrosive to the skin and mucous membranes, and is easily absorbed through the epidermis and mucous membranes to cause poisoning. The maximum allowable concentration in the air is 1mg/m³.

Industrial production methods mainly include sodium formate method, oxidation method, carbonyl synthesis method, glycol oxidation method, propylene oxidation method, carbon monoxide coupling method.

Sodium formate method

After carbon monoxide is purified, it reacts with sodium hydroxide under pressure to generate sodium formate, which is then dehydrogenated at high temperature to generate sodium oxalate. The sodium oxalate is then leaded(or calcified), acidified, crystallized, dehydrated to dry and other processes to get finished oxalic acid.

Oxidation method

Using starch or glucose liquor as raw material, in the presence of alum catalyst, oxalic acid is obtained by oxidation reaction with nitric acid and sulfuric acid. The nitrogen oxides in the exhaust gas are sent to the absorption tower to be recovered to generate dilute nitric acid.

Carbonyl Synthesis Method

Carbon monoxide is purified to more than 90%, and it undergoes a carbonylation reaction with butanol in the presence of a palladium catalyst to generate dibutyl oxalate, and then obtain oxalic acid through hydrolysis. This method is divided into liquid phase method and gas phase method.

Ethylene glycol oxidation Method

Using ethylene glycol as raw material, it is obtained by oxidation with air in the presence of nitric acid and sulfuric acid.

Propylene oxidation method

The oxidation process is carried out in two steps. The first step is oxidation with nitric acid to convert propylene into α-nitro lactic acid, then further catalytic oxidation to obtain oxalic acid. The second step can also use mixed acid as the oxidant.