Oxalic Acid

short description:

Is a kind of organic acid, is a metabolic product of organisms, binary acid, widely distributed in plants, animals and fungi, and in different living organisms play different functions. It has been found that oxalic acid is rich in more than 100 kinds of plants, especially spinach, amaranth, beet, purslane, taro, sweet potato and rhubarb. Because oxalic acid can reduce the bioavailability of mineral elements, it is considered as an antagonist for the absorption and utilization of mineral elements. Its anhydride is carbon sesquioxide.

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Product Details

Specifications provided

White powder content ≥ 99%

oxalic acid liquid ≥ 98%

(Scope of application reference ‘product usage’)

Oxalic acid is a weak acid. The first-order ionization constant Ka1=5.9×10-2 and the second-order ionization constant Ka2=6.4×10-5. It has acid commonness. It can neutralize the base, discolor the indicator, and release carbon dioxide by interaction with carbonates. It has strong reducibility and is easy to be oxidized into carbon dioxide and water by oxidizing agent. Acid potassium permanganate (KMnO4) solution can be discolored and reduced to 2-valence manganese ion.

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Product Parameter

CAS Rn

144-62-7

EINECS Rn

205-634-3

FORMULA wt

90.0349

Product Usage

Dyeing additive

In printing and dyeing industry, it can replace acetic acid to make primary colors. Used as a colorant and bleach for pigment dyes. It can be combined with certain chemicals to form dyes, and can also be used as a stabilizer for dyes, thereby extending the life of dyes.

Cleanser

The application of zeolite as filler in the paper industry can improve the performance and quality of paper, so that its porosity increases, water absorption is enhanced, it is easier to cut, writing performance is improved, and it has certain fire resistance.

Plastics industry

Plastics industry for the production of polyvinyl chloride, amino plastics, urea formaldehyde plastics, paint chips and so on.

Photovoltaic industry

Oxalic acid is also used in the photovoltaic industry. Oxalic acid can be used to make silicon wafers for solar panels, helping to reduce defects on the surface of silicon wafers.

Sand washing

Oxalic acid combined with hydrochloric acid and hydrofluoric acid can act on the acid washing of quartz sand.

Synthesis catalyst

As a catalyst for phenolic resin synthesis, the catalytic reaction is mild, the process is relatively stable, and the duration is the longest. Acetone oxalate solution can catalyze the curing reaction of epoxy resin and shorten the curing time. It is also used as a pH regulator for the synthesis of urea-formaldehyde resin and melamine formaldehyde resin. It can also be added to water-soluble polyvinyl alcohol adhesive to improve the drying speed and bonding strength. It can also be used as curing agent of urea-formaldehyde resin and metal ion chelating agent. It can be used as an accelerator to prepare starch binder with KMnO4 oxidizing agent to speed up oxidation rate and shorten reaction time.