Specifications

Basic information

Methylal is a colorless, clear and volatile flammable liquid with chloroform odor and irritation. It is soluble in 3 times of water (32% (mass) in water at 20 ℃). It is irritating to the mucous membrane and has an anesthetic effect. Inhalation of vapor can cause irritation of the nose and throat; high concentration inhalation of dizziness and so on. There is damage to the eyes, and the damage can last for several days. Long-term skin contact can cause dry skin.

Application areas

Mainly used in the production of anion effect for resin, but also as a solvent and special fuel. Its dissolving ability is stronger than that of ether and acetone, and methanol and azeotropic mixture can dissolve nitrocellulose with high nitrogen content. However, due to its strong anesthetic vapor, it should not be used as a general solvent, usually as a special acoustic solvent. It is also used in the manufacture of perfumes, the production of artificial resins, and as a reaction medium for Grignart reactions and rapa (synthetic) reactions.

Packaging, transportation and safety

Storage

The warehouse is ventilated and dried at low temperature; it is stored and transported separately from oxidants and acids.

Attention to transportation

During transportation, the transportation vehicles shall be equipped with corresponding types and quantities of fire-fighting equipment and leakage emergency treatment equipment. recommend morning and evening transportation in summer. The tank (tank) truck used in transportation shall be provided with grounding chain, and the hole partition plate can be set in the tank to reduce static electricity generated by vibration. It is strictly prohibited to mix with oxidants, acids, edible chemicals, etc. During transportation, it shall be protected from sun exposure, rain and high temperature. Stopover should be away from fire, heat, high temperature zone. The exhaust pipe of the vehicle carrying the goods must be equipped with fire retardant device, and it is forbidden to use mechanical equipment and tools that are easy to produce sparks for loading and unloading. Road transportation shall be carried out according to the prescribed route, and do not stop in residential areas and densely populated areas. It is forbidden to slip away during railway transportation. It is strictly prohibited to use wooden ships and cement ships for bulk transportation.

Hazard Overview

[Explosion Hazard] This product is extremely flammable and irritating.

First aid measures

[Skin contact] Take off contaminated clothing and rinse the skin thoroughly with soap and water.

[Eye contact] Lift the eyelid and flush with flowing water or normal saline. Seek medical attention.

[Inhalation] Quickly leave the scene to the fresh air. Keep the respiratory tract unobstructed. If breathing is difficult, give oxygen. If breathing stops, give artificial respiration immediately. Seek medical attention.

[Intake] Drink plenty of warm water to induce vomiting. Seek medical attention.

Fire protection measures

【Hazardous characters】 Its vapor and air can form an explosive mixture. In case of high heat, open flame and strong oxidant, it is easy to cause combustion. Reacts violently in contact with an oxidizing agent. Exposure to air or under light conditions can produce potentially explosive peroxides.

[harmful combustion products] carbon monoxide, carbon dioxide.

[Fire Extinguishing Method] Move the container from the fire to an open place as much as possible. Spray water to keep the fire container cool until the end of the fire. Containers in a fire scene that have discolored or produced sound from the safety pressure relief device must be evacuated immediately. Fire extinguishing agent: anti-soluble foam, carbon dioxide, dry powder, sand. Fire extinguishing with water is ineffective.

Emergency treatment of leakage

[Emergency Treatment] Quickly evacuate the personnel from the leakage pollution area to the safety area, isolate them and strictly restrict access. Cut off the fire source. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and anti-static overalls. Cut off the leak source as much as possible. Prevent from flowing into restricted spaces such as sewers and flood drainage ditches. Small amount of leakage: with activated carbon or other inert material absorption. It can also be washed with a large amount of water and diluted with washing water into the waste water system. Large leakage: build embankments or dig pits to contain. Cover with foam to reduce steam disasters. Transfer to tanker or special collector with explosion-proof pump, recycle or transport to waste treatment site for disposal.