Is copper oxide toxic? Is it harmful to the human body?

Copper oxide is a black powder or solid substance. It is insoluble in water, but it can be dissolved in an acidic environment. Copper oxide itself is toxic, but it is not a "highly toxic substance". Under normal circumstances, short-term and small amounts of contact will not cause harm to the human body, but if it is in a copper oxide environment for a long time or copper oxide is exposed to the outside for a long time, it will cause certain harm to the human body.
If high concentrations of copper oxide are exposed to the outside and inhaled by the human body at one time, it may cause symptoms such as coughing, sore throat, chest tightness, and pharyngeal pain. In severe cases, it may induce bronchitis. If the skin is accidentally exposed, allergies and itching may occur. Ingestion of a large amount of copper ions will also cause abdominal pain. When excessive copper ions enter the blood, they will damage liver and kidney cells, leading to jaundice, hematuria, and even acute liver and kidney failure.
If you need to contact copper oxide in your daily work, it is recommended to wear auxiliary supplies such as dust masks, gloves and goggles when handling it, so as to avoid inhalation or contact with the skin. It is usually stored in places where children cannot reach.
In case of coughing, chest tightness and other symptoms after inhaling dust, you need to seek medical attention in time. If you accidentally ingest it, you can drink milk to protect the gastric mucosa. Remember not to induce vomiting, because vomiting may damage the esophagus. If necessary, you should also seek medical attention in time.
The storage of copper oxide also needs to be paid attention to. It should be placed in a dry environment and away from acidic substances.
The toxicity and risk of copper oxide mainly depend on whether it is inhaled in large quantities or exposed to large quantities. People rarely come into contact with it in daily life, so there is no need to worry, but workers who live in a copper oxide environment for a long time need to avoid accidental ingestion or inhalation of dust.
Storage and use in the industrial industry should also be standardized to reduce potential health hazards.

author: Hazel
date: 2025-07-23