1,4-Dioxane[2]

Updated: 2026-09-12

Overview

1,4-Dioxane is a colorless, ether-like liquid widely used as an industrial solvent due to its excellent solvency properties. It is a byproduct of ethylene oxide production and is valued for its ability to dissolve a wide range of organic and inorganic compounds. Despite its utility, 1,4-dioxane is classified as a potential carcinogen and environmental pollutant, prompting strict regulatory oversight in many regions. Its production and handling require adherence to safety protocols to mitigate health and environmental risks.

Physical and Chemical Properties

1,4-Dioxane exhibits high miscibility with water and organic solvents, making it a versatile solvent in industrial applications. Its low viscosity and relatively high boiling point (101.1°C) suit it for processes requiring stable temperature conditions. A notable hazard is its tendency to form explosive peroxides when exposed to air, especially in concentrated forms. Regular testing for peroxide content is essential during storage. The compound is also highly flammable, requiring careful handling to avoid ignition sources.

Main Applications

In the pharmaceutical industry, 1,4-dioxane serves as a solvent for resins, oils, and waxes during drug formulation. It is also a key component in adhesives, paints, and varnishes, where its solvency ensures uniform mixing and application. Another critical use is as a stabilizer for chlorinated solvents like 1,1,1-trichloroethane. However, due to environmental concerns, alternatives are being explored. Its role in laboratory settings includes extraction and purification processes, though safer substitutes are increasingly preferred.

Safety and Storage

Due to its toxicity and flammability, 1,4-dioxane requires strict safety measures, including the use of gloves, goggles, and respiratory protection. Work areas must be well-ventilated to prevent vapor accumulation. Storage containers should be tightly sealed and labeled with hazard warnings. Periodic checks for peroxide formation are mandatory, and inhibitors like BHT may be added to extend shelf life. Disposal must comply with local regulations to prevent environmental contamination.

B2B Procurement Guide

When sourcing 1,4-dioxane, prioritize suppliers with certifications like ISO 9001 and REACH compliance. Request detailed specifications, including purity levels (typically ≥99%) and peroxide content reports. Bulk purchases may offer cost savings, but ensure proper storage facilities are available. Evaluate supplier safety records and transportation protocols to minimize risks during logistics. Long-term contracts with reliable vendors can stabilize supply chains amid regulatory fluctuations.