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[Chemical Knowledge]：Specification for storage and transport of methylene chloride

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Dichloromethane in the field of chemical production of raw materials in the safety of storage and transport specifications

1. Introduction

Dichloromethane is a common organic solvent, widely used in chemical, pharmaceutical, pesticide and other fields. However, due to its toxicity and flammability, strict compliance with relevant regulations is required to ensure safety during storage and transportation. This article will detail the safety storage and transportation specifications of methylene chloride.

2. the physical and chemical properties of dichloromethane

dichloromethane is a colorless transparent liquid with pungent odor. Melting point -96.7 ℃, boiling point 39.8 ℃, density 1.3266g/cm3(20/4 ℃), refractive index 1.4247, flash point (closed cup)<-17 ℃, flammable, vapor can form explosive mixture with air, explosion limit 6.2~15.0 (volume). Slightly soluble in water, soluble in ethanol, ether and other organic solvents.

3. the hazardous
of methylene chloride
methylene chloride has certain toxicity and flammability, which may cause harm to human body and environment. Long-term exposure to dichloromethane may cause damage to the nervous system and liver, and symptoms such as dizziness, headache, nausea, and vomiting may occur during acute poisoning. In addition, methylene chloride may cause safety accidents such as fire and explosion.

4. Dichloromethane Safety Storage Specification

1. The storage place should be selected in a cool, ventilated and dry place, away from fire and heat sources.
2. The storage container shall be well sealed to prevent leakage and volatilization.
3. The storage capacity shall be controlled within a safe range and shall not exceed the maximum storage capacity.
4. The storage area shall be provided with obvious safety signs and warning signs.
Safety transportation specifications for
5. dichloromethane

1. Before transportation, check the safety performance of transportation vehicles and containers to ensure that they meet the requirements.
2. Keep running smoothly during transportation to avoid severe vibration and collision.
3. Transportation vehicles shall be equipped with corresponding fire fighting equipment and leakage emergency treatment equipment.
4. Relevant laws and regulations shall be observed during transportation to ensure legal compliance.

6. methylene chloride leakage emergency treatment measures

1. quickly evacuate the personnel from the contaminated area to the safety zone, and isolate, strictly restrict access. Cut off the fire source. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and fire protection clothing. Cut off leakage sources as much as possible to prevent entry into restricted spaces such as sewers and flood drainage ditches.
2. Small amount of leakage: adsorption or absorption with sand or other non-combustible materials. Can also be washed with a lot of water, wash water diluted into the waste water system.
3. A large number of leaks: build a dam or dig a pit to accommodate; cover with foam to reduce steam disasters. Transfer to tank truck or special collector with explosion-proof pump, recycle or transport to waste treatment site for disposal.

7. conclusion

as a common organic solvent, dichloromethane is widely used in the field of chemical production raw materials. However, due to its toxicity and flammability, strict compliance with relevant regulations is required to ensure safety during storage and transportation. By understanding the physical and chemical properties of methylene chloride, harmfulness and safety of storage and transportation norms, can effectively prevent the occurrence of safety accidents, protect people's lives and property safety.

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