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Product Name: Diethyl Malonate
Chemical Formula: C7H12O4
Common Synonyms: DEM, Malonic acid diethyl ester
Appearance: Colorless liquid, mild odor
Use Cases: Intermediate in organic synthesis, flavors and fragrances, pharmaceutical manufacturing
Why It Matters: Specific identification is more than a formality. Getting chemicals mixed up can lead to health risks or production loss. This section in MSDS emphasizes precision, which really protects workers and the integrity of the process.
Classification: Slightly hazardous for ingestion, flammable liquid, eye and skin irritant
Common Hazards: Vapor is heavier than air, may travel to ignition sources; contact with skin or eyes causes irritation; inhaling high concentrations can cause dizziness or headaches
Precautionary Statements: Use in well-ventilated areas, keep away from sparks and open flames, wear eye and hand protection
Why Awareness Helps: Too often incidents come from carelessness or assumptions. Knowing the risks upfront gives everyone a chance to work smarter—not just safer.
Main Component: Diethyl Malonate above 98% purity
CAS Number: 105-53-3
Possible Impurities: Ethanol, malonic acid traces
What Transparency Prevents: Surprises—unexpected impurities sometimes cause reactivity or health complaints. Detailed ingredient lists keep users from flying blind, especially in scaling up laboratory work.
Eye Contact: Flush eyes with water for several minutes; seek medical attention for persistent irritation
Skin Contact: Wash skin thoroughly with soap and water; remove contaminated clothing
Inhalation: Move to fresh air; support breathing if needed; call for medical help if symptoms don’t improve
Ingestion: Rinse mouth, never induce vomiting unless a medical professional asks for it
Why Quick Response Matters: Time lost figuring out what to do puts people in real danger. Clear instructions save lives, from small spills to major mishaps.
Suitable Extinguishing Media: Use foam, dry chemical, or CO2 extinguishers
Fire Hazards: Vapors can form explosive mixtures with air; high temperatures increase risk
Protective Actions: Firefighters wear full protective gear including self-contained breathing apparatus
What Gets Overlooked: Underestimating fire risk is a common recipe for disaster, especially with solvents. Stored in a crowded lab or warehouse, even a small spark spells big trouble.
Personal Precautions: Stop the leak if you can safely; isolate the area; ventilate
Environmental Precautions: Prevent entry into drains or soil
Clean-up Procedures: Use inert absorbent material, sweep up and transfer to disposal container
How Small Spills Get Big Fast: Even minor mishaps snowball when people still assume “it’ll just evaporate.” Preparedness matters as much as prevention, so no corners cut in this section.
Safe Handling: Use away from ignition sources; wear gloves and eye protection; work under a hood
Storage Guidance: Store in tightly closed containers, in cool, dry, well-ventilated locations
Storage Incompatibilities: Keep separate from strong oxidizers, acids, or bases
Lesson from the Trenches: Crowded workspaces and overloaded storage shelves tempt shortcuts. Following these standards is the only way to avoid accidents and lost inventory.
Engineering Controls: Local exhaust ventilation, fume hood
Personal Protective Equipment: Chemical-resistant gloves, splash goggles, lab coats
Work Hygiene: Wash hands after handling, don’t eat or drink near work area
Experience Shows: Physical controls must match the hazard—an open window is no substitute for a functioning fume hood. Habit matters so much; ingrained routines stop exposure before it starts.
Physical State: Liquid
Odor: Mild, fruity
Boiling Point: Approximately 199°C
Melting Point: Around −50°C
Solubility: Slightly soluble in water, mixes well with most organic solvents
Vapor Pressure: Low at room temperature
What Real-World Problems Happen: Ignoring these details can wreck processes—especially when heating, mixing, or scaling up reactions. Knowing boiling or flashpoints keeps projects on schedule and everyone out of hot water.
Chemical Stability: Stable under ordinary conditions
Incompatible Materials: Strong oxidizers, strong acids or bases
Decomposition Products: Produces carbon oxides and other chemicals at high temperature
What Goes Wrong: Heat plus the wrong mixture equals ruined batches or worse, fire. Understanding reactivity isn’t for the “what ifs”—it’s about daily risk management.
Routes of Exposure: Skin, eyes, inhalation, ingestion
Acute Effects: May cause irritation, headache, nausea
Chronic Effects: Prolonged or repeated exposure may worsen symptoms, but major long-term issues are rare at recommended exposure levels
What Gets Missed: Chronic symptoms sneak up when nobody expects them—regular reviews and check-ins help catch issues early, before minor exposure turns into something more serious.
Persistence and Degradability: Readily biodegradable in soil and water
Bioaccumulation: Low potential
Aquatic Toxicity: Harmful to aquatic life at high concentrations
Real-World Impact: Runoff or careless disposal does damage far from the source. Small mistakes multiply—chemical users share responsibility with the wider community and ecosystem.
Waste Handling: Dispose of in accordance with local, state, and national regulations
Methods: Incineration under controlled conditions, chemical recycling where possible
Containers: Empty containers need proper disposal—never simply trash or pour down drain
Personal Connection: The stuff someone pours out of a flask doesn’t just disappear. Chemical legacy hangs around in unexpected places unless everyone follows the playbook.
UN Number: 2525
Shipping Name: Diethyl Malonate
Hazard Class: 3 (Flammable liquid)
Packing Group: III
How Transport Goes Wrong: Packaging and labeling feel like red tape—until an accident or checkpoint. It only takes one leaky drum or mislabeled jug to risk fines, injuries, or environmental messes.
Label Elements: Complies with GHS/CLP labeling requirements where enforced
Allergens and Restrictions: Not listed as carcinogenic or as a controlled substance in most jurisdictions
Community Reporting: Facilities using larger amounts submit reports under major right-to-know laws
Why It Matters: Regulation often has a reputation as a box-checking exercise. Instead, full disclosure protects not just employees, but whole neighborhoods, showing respect for people living nearby.
