Overview
Boric acid powder, chemically known as orthoboric acid, is a white crystalline solid derived from boron. It is a weak acid with diverse applications across multiple industries, including pharmaceuticals, agriculture, and manufacturing. Its antiseptic and flame-retardant properties make it particularly valuable in medical and industrial settings. Boric acid is naturally occurring and can be synthesized from borate minerals. It is widely used due to its low toxicity to humans at low concentrations, though higher doses can be harmful. The powder form is preferred for its ease of handling and precise dosage in various applications.
Physical and Chemical Properties
Boric acid powder is characterized by its white, odorless crystals and mild solubility in water. It has a density of 1.435 g/cm³ and melts at 170.9 °C, decomposing at higher temperatures. Its solubility in water increases with temperature, making it useful in temperature-dependent processes. Chemically, boric acid acts as a weak Lewis acid, forming borate salts when neutralized. It exhibits antiseptic and antifungal properties, which are leveraged in medical and agricultural applications. Its flame-retardant properties are due to its ability to release water when heated, cooling the surrounding material.
Main Applications
In pharmaceuticals, boric acid powder is used as an antiseptic for minor cuts and burns, and in eye wash solutions. Its antifungal properties make it effective in treating conditions like athlete's foot. In agriculture, it serves as a micronutrient for plants and a pesticide against ants, cockroaches, and termites. Industrially, boric acid is a key component in the production of borosilicate glass, which is resistant to thermal shock. It is also used as a flame retardant in textiles and wood products. Additionally, it plays a role in nuclear power plants as a neutron absorber.
Safety and Storage
While boric acid is relatively low in toxicity, prolonged exposure or ingestion can cause health issues such as nausea, vomiting, and kidney damage. Proper handling includes using gloves, goggles, and masks to prevent inhalation or skin contact. It should be stored in a cool, dry place away from incompatible materials like strong bases. In case of accidental ingestion, seek medical attention immediately. Spills should be cleaned up promptly with water and neutralized with a weak base like sodium bicarbonate. Proper disposal methods must be followed to avoid environmental contamination.
B2B Procurement Guide
When procuring boric acid powder, prioritize suppliers with certifications such as ISO or GMP to ensure product quality and consistency. Key specifications to verify include purity (typically 99.5% or higher), particle size, and moisture content. Packaging options range from 25 kg bags to bulk containers, depending on volume requirements. Price negotiations should consider order volume, with discounts available for larger purchases. Lead times and logistics are critical, especially for international shipments, as boric acid is classified as a hazardous material in some regions. Always request material safety data sheets (MSDS) and certificates of analysis (COA) for compliance.