When ammonia gas is present in the air at certain concentrations (usually not exceeding 0.5 mg/m³), it can cause symptoms such as headaches, dizziness, and nausea; high doses can lead to vomiting and symptoms of poisoning to the nervous system.

(1) Toxicity of Ammonia:

1. Acute Hazard: Primarily manifests as irritation to the eyes and upper respiratory tract mucosa. Skin contact can cause chemical burns or frostbite. Oral ingestion can lead to digestive tract burns, potentially causing perforation and bleeding, which may be fatal.

2. Chronic Effects: May irritate mucous membranes, and repeated long-term contact can lead to diseases such as bronchitis, pneumonia, and conjunctivitis. Additionally, skin conditions like dermatitis and eczema, as well as corneal ulcers, may manifest as symptoms.

3. Environmental Behavior: Health Hazards - Routes of Entry: Inhalation, Ingestion.

Health Hazards: This product is a colorless and transparent liquid with a strong odor. It can corrode the surface inside metal containers, and upon heating, it decomposes to produce highly toxic nitrogen oxide fumes. Toxicological Information and Environmental Behavior Hazards: Its vapor can form explosive mixtures with air and react with oxidizers to produce perchlorates. On-site Emergency Monitoring Method: Portable spectrophotometry. Laboratory Testing Method: Liquid Chromatography. 5 Other Harmful Effects This substance may be harmful to the environment, and special attention should be paid to potential contamination of surface water, soil, air, and water sources.