Although methylene chloride is widely used, contact methylene chloride directlky will have the following effects on the human body:

 
(1) The nose and throat are slightly irritated.
(2) At 500 to 1,000 ppm for 1 to 2 hours may cause mild depression of the nervous system, such as: dizziness, dizziness, nausea, numbness of hands and feet, fatigue, inability to concentrate and decreased coordination.
(3) Very high concentration exposure may cause loss of consciousness and death.
(4) Liquid may irritate the skin. If it flows into gloves, shoes or tight clothing, it may be severely irritating.
(5) In animal experiments, methylene chloride will be quickly absorbed into the body and cause moderate toxicity.
(6) Carcinogenicity: Research indicates that workers exposed to long-term exposure have no signs of increased cancer, but IARC lists it as a suspected carcinogen.