Methylene chloride is used to process spices and hops and to extract caffeine from coffee beans and tea leaves. In the automotive industry, it serves as a lubricant or degreaser. Lab technicians use it to extract other chemicals from plants for use in steroids, antibiotics and vitamins.
In 2019, EPA found uses of methylene chloride in paint removers to pose unreasonable risks to human health and banned the use of the chemical in paint removers for consumer use.
OSHA monitors and regulates methylene chloride in industrial settings, and its Methylene Chloride Standard sets a permissible exposure limit. Employers must follow OSHA requirements applicable to worker protection, including maintaining proper ventilation and use of respirators and other safety gear.
Uses & Benefits
Methylene chloride is most prominently used industrially — in the production of paint strippers, pharmaceuticals and process solvents. Methylene chloride also is used in the following industrial settings:
Food and Beverage Manufacturing
Methylene chloride is used as an extraction solvent in the food and beverage manufacturing industry. For example, methylene chloride can be used to remove caffeine from unroasted coffee beans and tea leaves, to make decaffeinated coffee and tea.
Methylene chloride also is used in processing spices, creating hops extract for beer and other flavorings for the food and beverage industries.
Methylene chloride can be used to degrease metal surfaces and parts, such as airplane components and railroad tracks and equipment. Lubricating and degreasing products used in automotive products, for example in gasket removal and for prepping metal parts for a new gasket, could contain methylene chloride.
Automotive specialists use a vapor methylene chloride degreasing process to remove oils and grease from car transistor parts, diesel motors and aircraft components and spacecraft assemblies.
Modern vapor degreasing techniques that rely on methylene chloride enable metal parts in transportation systems to be cleaned quickly and safely.
In laboratories, methylene chloride is used to extract chemicals from plants or foods for medicine such as steroids, antibiotics and vitamins.
Medical equipment can be quickly and efficiently cleaned with methylene chloride cleaners without causing corrosion problems or damage to heat-sensitive parts.
Methylene chloride is a solvent found in paint and varnish strippers that are used to remove paint or varnish coatings from a variety of surfaces. It is also used in bathtub refinishing.
The U.S. Environmental Protection Agency (EPA) issued a final rule banning the use of methylene chloride in all paint removers for consumer use, effective November 24, 2019.
An EPA ban on methylene chloride paint removers for consumer use takes effect on November 24, 2019. The ban will require establishments, including e-commerce sites, to permanently suspend the sale of paint removal products containing methylene chloride to consumers.
EPA is also working on a future rulemaking that could establish a federally-enforceable training, certification, and limited access program for methylene chloride for commercial uses.
EPA requires that releases of methylene chloride of 1,000 pounds or more be reported to the federal government. EPA also has guidelines on how much methylene chloride a person can be exposed to for certain amounts of time “without causing risk to human health.”
OSHA has set a permissible exposure limit for methylene chloride for workers. In food products such as spices, hops extract for beer and decaffeinated coffee and tea, FDA has established limits on the amounts of methylene chloride that can remain in a product. Under the Federal Hazardous Substances Act, the Consumer Product Safety Commission requires labeling for products containing methylene chloride.