1. In the production of plastic stabilizers: It serves as a crucial raw material for manufacturing plastic stabilizers. These stabilizers help enhance the stability of plastics, protecting them from degradation caused by factors such as heat, light, and oxidation, thereby extending the lifespan and improving the performance of plastic products.
2. In the synthesis of chemical products: It is involved in the synthesis of various chemical substances. For example, it is used in the production of synthetic fibers, enabling the creation of fibers with specific properties. Additionally, it plays a role in the manufacturing of phosphites, which are widely applied in different industrial fields.
3. As a brightening agent for nylon: Phosphorous acid contributes to the production of nylon brighteners. These brighteners can improve the whiteness and luster of nylon products, enhancing their aesthetic appeal and quality in applications such as textiles and engineering plastics.
4. In the preparation of lead phosphite: It is utilized in the preparation of dibasic lead phosphite. This compound is often used as a stabilizer and heat stabilizer in the plastics industry, providing additional protection against thermal and chemical degradation.
5. In the production of pesticides: Phosphorous acid is an important raw material for the synthesis of glyphosate, a widely used herbicide. Glyphosate effectively controls weeds by interfering with their metabolic processes, playing a significant role in modern agriculture.
6. In water treatment: Phosphorous Acid is applied in the production of water treatment agents like ATMP (Amino Trimethylene Phosphonic Acid). ATMP helps prevent the formation of scale and corrosion in water systems, ensuring the smooth operation of industrial equipment and pipelines that are in contact with water.
7. In the preparation of phosphates: It is used in the production of potassium dihydrogen phosphite. This phosphate compound has applications in various fields, such as fertilizers, where it provides essential phosphorus and potassium nutrients for plant growth.
8. As a stabilizer for polycarbonate: Phosphorous acid can act as a stabilizer for polycarbonate, a high-performance engineering plastic. By improving the stability of polycarbonate, it helps maintain the material's mechanical, optical, and thermal properties, making it suitable for a wide range of applications, including automotive components, electronic devices, and optical lenses.
9. As an antioxidant for nylon 1010: It is employed in the manufacturing of antioxidants for nylon 1010. These antioxidants prevent the oxidation of nylon 1010, which can lead to a decrease in its mechanical strength and other properties over time, thus ensuring the durability and reliability of nylon 1010-based products.

Basic Information

• Chaical Formula: H3PO3

• Molecular Weight: 82.00

• CAS Number: 13598 - 36 - 2

Physical and Chaical Properties

• Appearance: Colorless to pale yellow ice-like crystals or white crystalline powder.