Product Description
Oxalic acid, also known as thanedioic acid, is a white crystalline powder or crystalline granules with the chemical formula of H2C2O4. It is a simple dibasic acid, taste sour, easily soluble in water and ethanol, slightly soluble in ether, insoluble in benzene. When the oxalic acid crystal is heated to 100°C, it will lose crystal water and become anhydrous oxalic acid. Anhydrous oxalic acid is colorless, odorless transparent crystal or white powder, poisonous, soluble in water, alcohol and ether. In addition, oxalic acid dihydrate is also a colorless crystal, which will lose moisture and become a white powder in dry air or when heated.
Oxalic acid is ubiquitous in nature and often exists in various plants in the form of oxalate, such as the cell membranes of barberry, sheepsorrel, sorrel and sorrel, and almost all plants contain calcium oxalate. As an important organic acid, oxalic acid 99.6% always plays an important role in industries such as electroplating, metal cleaning and textile printing and dyeing.
| Items | Index |
|---|---|
| Purity (C2H2O4.2H2O)% ≥ | 99.6 |
| Sulphate group (SO4) % ≤ | 0.07 |
| Incinerated residue % ≤ | 0.01 |
| Heavy metal (Pb) % ≤ | 0.0005 |
| Iron (Fe) % ≤ | 0.0005 |
| Chlorides (Cl) % ≤ | 0.0005 |
| Calcium (Ca) % ≤ | 0.0005 |
| Storage and transportation | Seal and store in a dry and cool place. Strictly moistureproof, waterproof and sunscreen. The storage temperature should not exceed 40 ℃. Keep away from oxides and alkaline substances. Packing with polypropylene woven bags lined with plastic bags. |
Applications of Oxalic Acid 99.6%
Due to the unique chemical properties of oxalic acid 99.6, it is widely used in many industrial fields. For example, in the pharmaceutical industry, oxalic acid is used to manufacture a variety of antibiotics and vitamins; in the printing and dyeing industry, it is used as a coloring agent and bleaching agent; in the plastics industry, it is used to produce plastic products such as polyvinyl chloride; in the cleaning agent field, oxalic powder is used as an efficient rust remover and cleaning agent; in chemical analysis, it is used as a standard substance for calibrating oxidants such as potassium permanganate.
1. Strong acidity. Oxalic acid 99.6% is an organic dibasic acid with relatively strong acidity, stronger than acetic acid (ethanoic acid). In water, oxalic acid can completely ionize two hydrogen ions (H+), thus showing strong acidity. This property makes oxalic acid an effective acid catalyst or reactant in many chemical reactions.
2. Reducibility. This chemical has strong reducing properties and can undergo redox reactions with a variety of oxidants, such as being oxidized by potassium permanganate to carbon dioxide and water. This reducing property is not only reflected in chemical experiments, but is also used in industry to prepare certain metal oxides or reduce certain metal ions.
3. Chelating properties. The carboxyl group (-COOH) in the oxalic acid molecule can form a stable complex with metal ions, and this property is called chelating properties. Since oxalic acid can form complexes with a variety of metal ions, it has a wide range of applications in chemical analysis, electroplating, wastewater treatment and other fields.
4. Physical stability and hygroscopicity. The physical properties of oxalic acid are relatively stable at room temperature, but decomposition reactions may occur at high temperatures or in the presence of strong oxidants. In addition, oxalic acid is also hygroscopic and easily absorbs moisture from the air. Therefore, when storing oxalic acid, a dry, well-ventilated environment should be selected to avoid humidity and high temperature.
5. Toxicity and safety. Although oxalic acid dihydrate has important applications in many fields, it is also toxic to the human body and the environment. Oxalic acid is irritating and corrosive to human skin and mucous membranes, and can cause burns and pain. Long-term contact or large-scale intake of oxalic acid may also cause damage to the kidneys and digestive system. Therefore, when using oxalic acid, you must strictly follow the safety operating procedures, wear appropriate protective equipment, and avoid direct contact with the skin and eyes.