Chemical Name: Dimethylamine, supplied as a 40% solution in water.
CAS Number: 124-40-3.
Synonyms: DMA, DMA 40%, Dimethylamine solution.
Our manufacturing line produces this solution by controlled reaction of methanol and ammonia under specific temperature and pressure, using catalyst beds that we optimize for yield and minimal by-products.
GHS Classification: Flammable liquid (Category 3), Acute toxicity–inhalation (Category 3), Skin corrosion (Category 1B), Serious eye damage (Category 1), Specific target organ toxicity–single exposure (Category 3, respiratory system).
Signal Word: Danger.
Hazard Statements: Highly flammable liquid and vapor, toxic by inhalation, causes severe skin burns and eye damage, may cause respiratory irritation. In our facility, accidental vapor leaks get immediate attention; we invest in layered controls to prevent plant downtime and keep local regulators satisfied.
Main Component: Dimethylamine (CH3)2NH — 40% by weight.
Solvent: Water — up to 60% by weight.
Impurities: Trace amines and ammonia from process; no stabilizers added. We strive to hit specification, batch after batch, by monitoring purities through in-house GC and titration.
Inhalation: Move the affected individual to fresh air; oxygen administration for breathing difficulties; medical attention for persistent symptoms.
Skin Contact: Remove contaminated clothing; rinse skin thoroughly with water; seek immediate medical help for burns.
Eye Contact: Flush eyes for 15 minutes at safety stations; prompt medical attention due to high risk of serious harm. Our plant staff perform regular response drills with site medics.
Ingestion: Do not induce vomiting; rinse mouth; get immediate professional medical care. Workers get safety briefings daily as handling mistakes lead to painful injuries.
Suitable Extinguishing Media: Alcohol-resistant foam, dry chemical, CO2, or water spray.
Specific Hazards: Toxic and irritating vapors arise from thermal decomposition, including oxides of nitrogen and carbon. High vapor density means vapors accumulate low to ground.
Advice for Firefighters: Full protective gear, positive pressure SCBA required. Cooling, containment, and coordinated movement matter; liquid leaks in a chemical plant turn small fires into major events, so teams train with local fire brigades.
Special Precautions: Remove containers from fire area if possible; water spray reduces vapor.
Personal Precautions: Wear chemical splash goggles, resistant gloves, face shields, and chemical suits.
Environmental Precautions: Prevent entry into soil, drains, or waterways. Collect leaks quickly; we run internal audits to check that bunded storage and emergency kits stay ready for spills.
Containment and Clean-up: Absorb with inert material; ventilate area; neutralize with dilute acid under controlled conditions, as neutralization liberates heat and vapors.
Emergency Procedures: Workers rely on alarm protocols and rapid shutoff systems at our site. We document releases and improvements after every event to strengthen our culture of safety.
Safe Handling: Maintain good ventilation; use non-sparking tools; avoid heating or open flames. Explosive dimethylamine/air mixtures demand care filling tanks or drums.
Storage: Keep in tightly sealed containers, out of direct sunlight and away from oxidizing agents or acids. As manufacturers, we engineer secondary containment and restrict access with key card systems; leak detection monitors supplement site inspections.
Hygiene Measures: Wash hands before breaks and after shifts; do not eat, drink, or smoke in handling areas. Our operators learn these basics as apprentices and refresh them with annual retraining.
Engineering Controls: Local exhaust at processing points; enclosed transfer systems; fixed gas detection installed at critical risk points.
Exposure Limits: OSHA PEL: 10 ppm (TWA).
Personal Protective Equipment: Chemical goggles, face shields, butyl rubber gloves, long sleeves, and respiratory protection when concentrations exceed limits. We provide PPE as standard issue and monitor compliance with routine supervisor walk-throughs and digital checklists.
Monitoring: We calibrate personal gas detectors regularly and keep records for every shift.
Appearance: Colourless, transparent liquid.
Odor: Strong, ammonia-like.
pH: Highly alkaline; in the range of 11–13 for typical batches.
Melting Point/Freezing Point: Below 0°C; product remains liquid at ambient temperature.
Boiling Point: Approximately 62°C for solution.
Flash Point: 6°C (closed cup).
Evaporation Rate: Rapid, especially at room temperature.
Vapor Pressure: Significant at ambient, potential for fume build-up.
Solubility: Fully miscible with water.
Other Properties: Corrosive to copper, zinc, and alloys. Our material selection for plant piping avoids incompatible metals to extend service life.
Chemical Stability: Stable under recommended storage and handling.
Reactivity: Vigorous reactions with strong oxidizers, acids, halogens; violent polymerization or exothermic reactions reported with certain compounds. Operators respect batch chemistry, following SOPs to the letter.
Hazardous Decomposition Products: Nitrogen oxides, carbon oxides, and highly flammable dimethylamine vapors released under fire or heat. Our facility’s fire control plan accounts for major vapor releases under catastrophic scenarios.
Acute Toxicity: Inhalation and skin exposure cause severe harm; 40% solution is caustic and may produce burns, pulmonary edema, or systemic distress.
Chronic Effects: Prolonged or repeated contact leads to dermatitis and respiratory issues.
Routes of Exposure: Eyes, skin, ingestion, inhalation probable for manufacturing plant staff and during maintenance days.
Carcinogenicity: No evidence classified for dimethylamine. Our safety reviews track symptom logs and first aid reports to spot any trends early.
Aquatic Toxicity: High toxicity to aquatic life; pH shift damages fish and invertebrate populations.
Persistence/Degradability: Degrades rapidly in water, but acute local impact if large spill enters a stream or drain.
Bioaccumulation: Not significant.
Mobility: Highly mobile in water; containment is a priority for us; process effluent is neutralized before off-site discharge.
Waste Treatment Methods: Neutralization under alkaline treatment, then off-site for regulated disposal as hazardous waste.
Disposal Precautions: Never dump down drains or into the environment; closed-loop waste capture systems are standard for any sizable manufacturing operation.
Contaminated Packaging: Rinse thoroughly before recycling or disposal, prevent incompatible mixtures in drums. We keep hazardous waste storage areas segregated by class, and train staff on the cost and compliance risks of improper dumping.
UN Number: 1032.
Proper Shipping Name: Dimethylamine, aqueous solution.
Class: Flammable Liquid; Subclass: Corrosive.
Packing Group: II.
Transport Precautions: Bulk shipments require pressure-rated, vented tankers; tank valves double checked pre-loading. Our shipping team pre-authorizes tanker routes and cross-checks against community safety regulations. For ground transport, staff monitor weather to avoid summer heat spikes or accident-prone highways.
Applicable Regulations: OSHA Hazard Communication Standard (HCS), TSCA, SARA Title III.
Labeling: GHS-compliant labels mark every drum and storage tank; container signage reviewed during quarterly safety audits.
Local Compliance: Our compliance team stays in contact with state environmental agencies for updates. New rule changes get incorporated into site training manuals and posted so every operator knows what’s at stake if procedures break down.
Reporting: Releases, injuries, and significant leaks get immediate site leadership attention; external reporting follows national chemical accident protocols.
