Nickel nitrate can be harmful to human health and the environment and should be handled properly. Here are some of the harmful effects of nickel nitrate are discussed below:

Skin irritation: Nickel nitrate can stimulate skin irritation and allergic reactions, particularly in those who are sensitive to nickel.

Respiratory problems: Nickel nitrate can rise respiratory issues, such as asthma when inhaled.

Carcinogenicity: Nickel nitrate is marked as a potential human carcinogen by the International Agency for Research on Cancer (IARC). Contact with high levels of nickel nitrate over a long period of time can arise the chance of lung and nasal cancer.

Environmental toxicity: Nickel nitrate is toxic and it exerts hazardous effects on aquatic life and soil microorganisms when left in the environment. It can also pollute groundwater and surface water if not properly controlled.

Fire and explosion hazard: Nickel nitrate is a strong oxidizer and stimulates the risk of fire and explosion. One should store or handle improperly.