Overview
Dithiodipropionic acid is a sulfur-containing organic compound with the molecular formula C6H10O4S2. It is widely used as an antioxidant and stabilizer in various industrial applications, including polymers, lubricants, and food packaging. The compound is known for its ability to prevent oxidative degradation, making it valuable in extending the lifespan of materials. Its synthesis typically involves the oxidation of thiodipropionic acid or related precursors. The compound is commercially available in crystalline powder form, often with high purity grades suitable for industrial use. Regulatory approvals, such as those from the FDA for food-contact applications, further enhance its utility.
Physical and Chemical Properties
Dithiodipropionic acid appears as a white to off-white crystalline powder with a melting point ranging between 160-165°C. It is soluble in water and common organic solvents like ethanol, which facilitates its incorporation into various formulations. The sulfur-sulfur bond in its structure is responsible for its antioxidant properties. The compound exhibits stability under normal storage conditions but may degrade when exposed to extreme heat or strong oxidizing agents. Its molecular weight of 210.27 g/mol and CAS number 1119-62-6 are key identifiers for procurement and regulatory compliance. Analytical methods such as HPLC and titration are commonly used to assess its purity.
Main Applications
Dithiodipropionic acid is primarily used as an antioxidant in polymers, where it prevents thermal and oxidative degradation during processing and use. It is also employed as a stabilizer in lubricants, reducing sludge formation and extending oil life. In the food industry, it serves as an antioxidant in packaging materials to preserve product quality. Other applications include its use in adhesives, coatings, and rubber products, where its stabilizing properties enhance durability. The compound’s compatibility with various matrices and its regulatory approvals make it a versatile additive in multiple industries. Its effectiveness at low concentrations further adds to its cost-efficiency.
Safety and Storage
Dithiodipropionic acid should be handled with care to avoid inhalation or skin contact. Personal protective equipment (PPE), including gloves and goggles, is recommended during handling. The compound is not highly toxic but may cause irritation upon prolonged exposure. Storage conditions should include a cool, dry environment away from direct sunlight and moisture to maintain stability. Containers should be tightly sealed to prevent contamination. In case of spills, absorb with inert material and dispose of according to local regulations. Safety data sheets (SDS) provided by suppliers should be consulted for detailed handling instructions.
B2B Procurement Guide
When procuring dithiodipropionic acid, verify the CAS number (1119-62-6) to ensure product authenticity. Purity grades, typically ranging from 98% to 99.5%, should align with application requirements. Supplier certifications, such as ISO or GMP, are indicators of quality and reliability. Bulk purchases often attract discounts, but ensure storage capacity matches delivery quantities. Pricing varies based on purity and supplier, with approximate ranges of $20-$50 per kg. Request samples for testing before large-scale orders. Logistics considerations, such as shipping conditions and lead times, should also be factored into procurement planning.
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