Storage Precautions for N-Methylaniline

N-Methylaniline (CAS No. 100-61-8) is a flammable, toxic, and environmentally harmful chemical. Its storage must strictly adhere to safety regulations to prevent leakage, combustion, or human exposure. The following are detailed storage precautions compiled from authoritative sources:

✅ Core Storage Requirements

Environmental Conditions: Store in a cool, well-ventilated warehouse. The recommended temperature is below 30°C. Avoid direct sunlight.

Sealing Management: Keep containers sealed to prevent vapor evaporation and oxidation, which can lead to deterioration (it may turn yellow or reddish-brown upon prolonged storage).

Keep Away from Hazards: Must be kept away from sources of ignition and heat. Open flames, sparks, and high-temperature equipment are strictly prohibited, as its flash point is 78°C, classifying it as a flammable liquid.

🚫 Management of Incompatible Materials (Mixed Storage Strictly Prohibited)

To prevent the risk of violent reactions or explosions, N-methylaniline should be stored separately from the following substances and must not be mixed with them:

Oxidizing agents (such as potassium permanganate, nitrates)

Strong acids (such as sulfuric acid, hydrochloric acid)

Edible chemicals or food additives

★ Safety Facilities and Operational Protection

Fire and Explosion Prevention: The storage area should be equipped with an appropriate quantity and type of fire-fighting equipment (such as dry powder and carbon dioxide fire extinguishers), and explosion-proof lighting and ventilation equipment should be installed.

Static Electricity Protection: Storage containers must be grounded to prevent static electricity buildup from causing fires.

Leakage Emergency Response: The storage area should be equipped with leakage emergency handling equipment (such as absorbent cotton, sand, activated carbon) and suitable containment materials to quickly control small leaks.

Lightning Protection Measures: For large storage areas, the warehouse should be equipped with lightning protection devices.

☂ Emergency and Transportation Supplementary Recommendations

In case of fire, firefighters must wear self-contained breathing apparatus and full-body fire suits, and fight the fire from upwind.

During transportation, ensure the packaging remains intact, protect from sunlight and rain, and avoid mixing with acids and oxidizers.

Packaging is recommended to use galvanized iron drums or inner-coated iron drums, each with a net weight of approximately 200 kg.

⚠️ Special Reminder

N-Methylaniline is moderately toxic and can be absorbed through the skin and respiratory tract. Long-term exposure may damage the liver and nervous system, and it is classified as a suspected human carcinogen (IARC Group 2B). Therefore, not only must storage be standardized, but protective gloves, goggles, and respirators should be worn during handling, and local or general ventilation systems should be ensured to be functioning properly.