Product Name: Methylamine
Chemical Formula: CH3NH2
CAS Number: 74-89-5
Manufacturer: Shandong Kunda Biotechnology Co., Ltd.
Product Use: Intermediate in pharmaceuticals, crop protection, rubber, solvents, dyes, and surfactants
Contact Information: Shandong Kunda Biotechnology Co., Ltd., Kunda Industrial Park, Shandong Province, China, Tel: +86-XXX-XXXXXXX, Email: info@kundachem.com
Emergency Phone: +86-XXX-XXXXX (24 hours)
Classification: Flammable Gas (Category 1), Acute Toxicity Inhalation (Category 3), Skin Corrosion/Irritation (Category 1B)
GHS Label: Danger
Hazard Statements: Extremely flammable gas, Toxic if inhaled, Causes severe skin burns and eye damage, May cause respiratory irritation
Pictograms: Flame, Skull and crossbones, Corrosion
Precautionary Statements: Keep away from heat, sparks, open flames; Avoid breathing gas; Wear chemical-resistant gloves, eye protection, face protection; Use only outdoors or in a well-ventilated area; Immediately call a POISON CENTER if exposed; Store locked up;
Routes of Exposure: Inhalation, skin contact, eye contact
Chemical Name: Methylamine
Concentration: >99% by weight
Common Synonyms: Aminomethane, Monomethylamine
Impurities/ Stabilizing Additives: No relevant impurities intended to be present at concentrations contributing to hazard
Inhalation: Move person to fresh air immediately, keep comfortable for breathing, administer oxygen if breathing is difficult, seek medical attention without delay.
Skin Contact: Remove contaminated clothing, rinse skin with plenty of water for at least 15 minutes, wash with soap, seek medical help.
Eye Contact: Rinse cautiously with water for 15-20 minutes, hold eyelids open, remove contact lenses if possible, get immediate attention from an ophthalmologist.
Ingestion: Do not induce vomiting, immediately rinse mouth, never give anything by mouth if person is unconscious, seek urgent medical attention.
Most Important Symptoms: Burning sensation, coughing, labored breathing, skin burns, severe eye damage.
Special Notes to Physician: Treat symptomatically and supportively; monitor for respiratory distress and chemical burns
Suitable Extinguishing Media: Dry chemical, carbon dioxide, alcohol-resistant foam; water may be ineffective for direct extinguishing but can cool exposed containers.
Unsuitable Extinguishing Media: Do not use a water jet; risk of violent reaction.
Special Hazards: Releases toxic gases (nitrogen oxides, ammonia, carbon monoxide) during combustion; vapors may form explosive mixtures with air.
Protective Equipment: Wear full protective gear including self-contained breathing apparatus; fight fire from safe distance or protected location.
Advice for Firefighters: Evacuate personnel, keep unaffected containers cool with water spray, approach fire upwind, avoid direct skin or eye contact with liquid or vapors
Personal Precautions: Evacuate area, ventilate, eliminate all ignition sources; ensure proper respiratory protection and full protective clothing.
Environmental Precautions: Prevent entry into waterways, sewers, and soil; alert relevant authorities if contamination occurs.
Spill Cleanup Methods: Stop leak if safe, absorb small spills with inert material (e.g. sand or vermiculite), collect into suitable container for disposal, use explosion-proof tools, flush area with water after collection, ventilate.
Emergency Procedures: Remove unprotected personnel, monitor for hazardous concentrations, restrict area until safety confirmed
Safe Handling: Use only in well-ventilated places, keep away from heat and ignition, avoid inhalation and contact with skin/eyes, handle in closed systems if possible, ground/bond all equipment, prevent static discharge.
Storage Requirements: Store in tightly sealed, clearly labeled steel containers; keep in cool, dry, well-ventilated area, away from strong acids, oxidizers, halogens, and sources of ignition.
Incompatible Materials: Acid chlorides, strong acids, oxidizing agents, silver and mercury compounds.
Special Notes: Secure gas cylinders upright, protect from physical damage, keep separate from food and drink, utilize secondary containment where feasible
Exposure Limits: OSHA TWA 10 ppm (12 mg/m3), ACGIH TWA 5 ppm (8 mg/m3)
Engineering Controls: Use explosion-proof ventilators, maintain negative pressure workplace, install gas detection systems, provide eyewash/shower stations nearby, use closed handling systems wherever possible.
Personal Protective Equipment: Chemical goggles, full-face shield, flame-resistant gloves (e.g. neoprene, butyl), chemical-resistant clothing, positive-pressure self-contained breathing apparatus in accidental release or high exposure risk environments.
Hygiene Measures: Wash thoroughly after handling, remove contaminated clothing before entering eating or rest areas, prohibit smoking or open flame in work area
Appearance: Colorless gas, may be shipped as liquid under pressure
Odor: Strong ammonia-like smell
Odor Threshold: Less than 1 ppm
pH: Not available (alkaline in solution)
Melting Point/Freezing Point: -93°C
Boiling Point: -6.3°C
Flash Point: -18°C (Closed cup)
Flammability: Extremely flammable gas
Explosive Limits: Lower 4.9% / Upper 20.7% (by volume in air)
Vapor Pressure: 2,394 mmHg (20°C)
Vapor Density: 1.08 (air=1)
Solubility: Completely soluble in water, ethanol, and ether
Density: 0.699 g/cm3 (liquid, 25°C)
Partition Coefficient (log Kow): -0.57
Decomposition Temperature: Not determined
Viscosity: Not determined
Chemical Stability: Stable under recommended conditions of storage and handling
Possibility of Hazardous Reactions: Forms explosive mixtures with air, reacts violently with strong oxidizers, acids, and acid chlorides; can form explosive compounds with silver and mercury salts.
Conditions to Avoid: Heat, sparks, flames, static discharge, contact with incompatible materials, confined spaces without proper exhaust ventilation.
Incompatible Materials: Acids, acid anhydrides, oxidizers, halogenated compounds
Hazardous Decomposition Products: Nitrogen oxides, ammonia, carbon monoxide, carbon dioxide
Acute Toxicity: LC50 (inhalation, rat): 4,000 ppm (4 hr); LD50 (oral, rat): 100 mg/kg
Routes of Exposure: Inhalation, ingestion, eye and skin contact
Effects of Exposure: Severe respiratory, skin, and eye irritation or burns; cough, sore throat, chest tightness, possible delayed pulmonary edema.
Chronic Effects: Prolonged contact leads to dermatitis, sensitization possible after repeated skin exposure.
Carcinogenicity: Not classified as carcinogen by IARC, NTP, OSHA
Mutagenicity: No data showing mutagenic effects in humans.
Reproductive Toxicity: No evidence for reproductive or developmental effects.
Target Organ Effects: Respiratory system, eyes, skin
Toxicity to Fish: LC50: 10-100 mg/L (varies with species)
Toxicity to Daphnia and Algae: EC50 (Daphnia): 36 mg/L (48hr), EC50 (Algae): 8 mg/L
Persistence and Biodegradability: Readily biodegradable under aerobic conditions
Bioaccumulative Potential: Low; log Kow -0.57 suggests minimal bioaccumulation
Mobility in Soil: Highly mobile, may leach to groundwater if released; rapidly diluted and biodegraded by microbes
Other Adverse Effects: Toxic to aquatic organisms in concentrated spills; rapid volatilization from water surfaces expected
Waste Treatment Methods: Neutralize with dilute acid in controlled conditions, comply with national and local regulations, use appropriate waste treatment systems.
Disposal of Containers: Empty containers may still contain residues; remove in accordance with federal, state, or local regulations; scrap only after thorough decontamination.
Special Precautions: Do not dispose of into drains, surface, or ground water; consult with certified hazardous waste disposal service
UN Number: UN1061
UN Proper Shipping Name: Methylamine, anhydrous
Transport Hazard Class: 2.1 (Flammable gas)
Packing Group: Not applicable
Marine Pollutant: Not classified as marine pollutant
Transport Labels: Flammable gas label required
Special Provisions: Follow national/international transport regulations (IMDG, IATA, DOT), ensure packaging integrity and leak-proof closure, secure upright during transit, restrict to authorized personnel
Regulations: Subject to global, regional, and national controls on production, storage, use, and disposal; listed on TSCA, EINECS, and relevant chemical inventories
Occupational Health & Safety: Covered under OSHA hazardous substance requirements; usage recommendations aligned with ACGIH and NIOSH exposure limits
Environmental Law: Governed by applicable environmental protection statutes for hazardous, toxic, and flammable gas emissions, with mandatory reporting thresholds
Restrictions: Authorization and notification requirements in some countries; frequent inspections may apply to major users
Labelling Requirements: Warning and hazard labels according to GHS and local implementation rules; updated safety instructions required for all personnel
