Diethyl oxalate

Diethyl oxalate is an organic chemical compound with the molecular formula C6H10O4 and CAS number 95-92-1. It is the diethyl ester of oxalic acid, featuring two ethyl groups attached to the oxalate backbone. With a molecular weight of 146.14 g/mol, this compound appears as a colorless liquid and is classified as a moderately hazardous substance with acute toxicity and eye irritation properties under GHS classification.

Diethyl oxalate is a colorless, oily liquid at room temperature with a characteristic ester odor. It has a molecular weight of 146.14 g/mol and is moderately soluble in water while being fully miscible with organic solvents like ethanol and ether. The compound has a boiling point around 186°C and a density of approximately 1.08 g/cm³, making it slightly denser than water.

Diethyl oxalate is primarily used as an intermediate in organic synthesis and pharmaceutical manufacturing. It serves as a building block for the production of various organic compounds, including pharmaceuticals, agrochemicals, and specialty chemicals. The compound is also utilized in research laboratories for synthetic chemistry applications and as a reagent in certain analytical procedures. Its ester functionality makes it valuable for further chemical transformations.

Diethyl oxalate must be handled with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing to prevent skin and eye contact. Work should be conducted in well-ventilated areas or under fume hoods to avoid inhalation exposure. The substance is classified as Acute Tox. 4 and Eye Irrit. 2, requiring careful handling to prevent accidental exposure and potential health effects.

Diethyl oxalate should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and direct sunlight. The storage area must be equipped with appropriate spill containment measures and maintained at stable temperatures to prevent degradation. Keep containers properly labeled and away from incompatible materials. Regular inspection of storage containers is recommended to ensure integrity and prevent leakage.

In case of skin contact with diethyl oxalate, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. For eye contact, flush immediately with clean water for at least 15 minutes and seek medical attention. If inhaled, move the person to fresh air immediately. In case of ingestion, do not induce vomiting and seek immediate medical attention.

Diethyl oxalate must be disposed of in accordance with local, national, and international waste regulations as hazardous chemical waste. The substance cannot be disposed of in regular waste streams or poured down drains. Contact licensed waste disposal companies specialized in chemical waste treatment. Small quantities may be neutralized or incinerated under controlled conditions by qualified professionals following appropriate environmental protection protocols.

Diethyl oxalate is classified under ADR as Class 6.1 (Toxic substances), Packing Group III for transportation purposes. It must be packaged in UN-approved containers with proper labeling including the GHS07 pictogram and 'Warning' signal word. Transportation documentation must include the proper shipping name, UN number, and hazard class. Vehicles must comply with ADR requirements for toxic substance transport.

Diethyl oxalate is subject to REACH regulation in Europe and must comply with CLP classification requirements. It is classified as Acute Tox. 4 and Eye Irrit. 2, requiring appropriate safety data sheets and hazard communication. The substance is not currently listed as a Substance of Very High Concern (SVHC). Users must follow occupational safety regulations and ensure proper risk assessment and management measures are implemented.

Diethyl oxalate is available through OYSI, a European distributor specializing in technical chemical products. OYSI provides high-quality diethyl oxalate with complete documentation including safety data sheets, certificates of analysis, and regulatory compliance information. As an established European chemical distributor, OYSI ensures reliable supply chains and technical support for industrial customers requiring this specialty chemical compound.