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Product Name: Monomethylamine Solution
Synonyms: MMA aqueous solution, Methylamine solution
CAS Number: 74-89-5
Recommended Use: Chemical manufacturing, pharmaceuticals, crop protection
Supplier Information: Refer to safety office or purchase documents for current supplier details
Emergency Contact Number: Local emergency response service or CHEMTREC
Classification: Flammable liquid, Toxic substance, Corrosive to skin and eyes
GHS Label Elements: Flame, Skull and Crossbones, Corrosive symbol
Signal Word: Danger
Hazard Statements: Causes severe burns, toxic if inhaled or ingested, highly flammable liquid and vapor, may cause allergic skin reaction
Precautionary Statements: Keep away from heat, use explosion-proof equipment, avoid breathing vapors, wash thoroughly after handling, wear appropriate PPE
Chemical Identity: Methylamine – Aqueous solution
Concentration (%): 30-40% methylamine by weight
CAS No.: 74-89-5
Water: 60-70%
Impurities: Trace ammonia possible, consult supplier if concern about trace contaminants arises
Inhalation: Remove person to fresh air, assist with breathing if necessary, seek medical attention if respiratory symptoms persist
Skin Contact: Remove contaminated clothing, wash skin thoroughly with water for at least 15 minutes, get medical attention for burns
Eye Contact: Rinse eyes cautiously with water for several minutes, remove contact lenses if possible, continue rinsing, seek immediate medical help
Ingestion: Rinse mouth, do not induce vomiting, seek immediate medical care
Most Important Symptoms: Burning sensation, coughing, shortness of breath, severe pain in contact areas
Suitable Extinguishing Media: Dry chemical powder, carbon dioxide, alcohol-resistant foam
Unsuitable Media: Direct water stream on burning liquid may cause violent reaction
Specific Hazards: Vapors may form explosive mixtures with air, containers may rupture under fire conditions
Special Protective Equipment: Self-contained breathing apparatus, chemical protective clothing
Hazardous Combustion Products: Carbon monoxide, carbon dioxide, nitrogen oxides, toxic fumes
Personal Precautions: Evacuate area, ventilate, avoid contact with eyes and skin, avoid inhalation of vapors
Protective Equipment: Use chemical splash goggles, gloves, apron, respiratory protection in confined space
Emergency Procedures: Remove all ignition sources, stop leak if safe, contain spillage, use absorbent for small spills
Method for Clean Up: Neutralize with dilute acid if safe, absorb with inert material, shovel up, place in a closed container for disposal
Precautions for Safe Handling: Wear PPE, keep away from open flames and hot surfaces, use in well-ventilated spaces, avoid creating aerosols
Safe Storage Conditions: Store in tightly closed, corrosion-resistant containers, in cool, dry, well-ventilated area away from sunlight and incompatible materials
Storage Incompatibilities: Strong acids, strong oxidizers, halogens, avoid contact with copper, zinc, or their alloys
Other Notes: Ensure secondary containment for large volumes, regularly inspect containers for corrosion or leaks
Occupational Exposure Limits: OSHA TWA 5 ppm; ACGIH TWA 5 ppm
Engineering Controls: Use local exhaust ventilation to keep airborne concentrations below permissible exposure limits
Personal Protective Equipment (PPE): Gloves (nitrile or butyl rubber), goggles or full-face shield, chemical-resistant apron, flame-resistant lab coat
Respiratory Protection: Use NIOSH-approved respirator for airborne concentrations above limits, emergency escape mask for high concentrations
Hygiene Measures: Wash hands after handling, do not eat or drink in handling area, provide eyewash stations and emergency showers
Appearance: Colorless to pale yellow liquid
Odor: Strong, fishy, ammonia-like odor
Odor threshold: Detectable below 1 ppm
pH: Strongly alkaline (typically above 11)
Melting/Freezing Point: -57°C (solution dependent)
Boiling Point: 44-55°C (solution dependent)
Flash Point: -11°C (closed cup)
Flammability: Flammable liquid
Auto-ignition Temperature: 430°C
Vapor Pressure: High; increases with temperature
Solubility: Fully miscible with water
Density: 0.9-1.0 g/cm³ (solution dependent)
Viscosity: Water-thin
Explosive Limits: Lower: 4.9%, Upper: 20.7% (in air)
Partition Coefficient: log Kow -0.57 (methylamine, not expected to bioaccumulate)
Chemical Stability: Stable under normal temperatures and pressures in sealed container
Reactivity: Highly reactive with acids, oxidizers, halogens, hypochlorites
Possibility of Hazardous Reactions: Rapid, violent reaction with strong acids; may release toxic vapors or heat
Hazardous Decomposition Products: Ammonia, carbon oxides, nitrogen oxides
Conditions to Avoid: Heat, spark, flame, incompatible chemicals
Incompatible Materials: Acidic materials, strong oxidizing agents, copper, brass, zinc
Acute Toxicity: Toxic by inhalation, ingestion, and skin absorption; LC50 (rat, inhalation) approx. 4000 ppm/4h; LD50 (oral, rat) approx. 100 mg/kg
Skin Corrosion: Severe burns, possible permanent tissue damage
Eye Effects: Severe irritation, burns, potential for blindness
Inhalation: Respiratory tract irritation, coughing, chest pain, shortness of breath
Chronic Effects: Prolonged or repeated exposure may cause dermatitis, respiratory sensitization
Carcinogenicity: No clear evidence in humans or animals
Other Effects: Potential to cause allergic skin reaction; overexposure causes CNS symptoms
Aquatic Toxicity: Toxic to aquatic organisms; LC50 (fish) 65 mg/L (96 hr, rainbow trout)
Mobility: High in soil and water; soluble in water and likely to leach
Persistence/Degradability: Readily biodegradable in natural environment
Bioaccumulation Potential: Not expected due to low log Kow
Other Adverse Effects: Raises pH of water, may cause significant shift in aquatic ecosystem, avoid release into sewers or waterways
Waste Disposal Methods: Hand over to licensed chemical waste disposal contractor, neutralize with properly diluted acid under expert supervision, avoid discharge into environment
Contaminated Packaging: Rinse well, dispose along with chemical waste according to local regulations
Special Precautions: Do not pour down drain, comply with all federal, state and local environmental controls
Disposal Regulations: Consult local, regional, national regulations for hazardous waste classification and permitted methods
UN Number: UN1235
Proper Shipping Name: Methylamine solution
Hazard Class: 3 (Flammable liquid), 8 (Corrosive)
Packing Group: II
Label Required: Flammable Liquid, Corrosive
Marine Pollutant: Not classified as marine pollutant
Special Transport Precautions: Secure upright, ventilate container, avoid transporting with acids or oxidizers, emergency documentation required in transport vehicle
OSHA: Listed hazardous chemical, strict exposure limits apply
TSCA: Listed in inventory
SARA 302/304: Listed as extremely hazardous, reporting thresholds apply
SARA 311/312: Immediate (Acute), Delayed (Chronic), Fire hazard, Reactive hazard
SARA 313: Subject to reporting
State Regulations: California Proposition 65: Not listed
International Inventories: Listed in EU REACH, Australian AICS, Canadian DSL
Other Legal Requirements: Strict handling, labeling, and spill response under international and national guidelines
