Hazards overview melamine
Health hazards: Exposure to steam or smoke can cause acute poisoning, ocular conjunctivitis, burning sensation in the nose and oral mucosa, epistaxis, bleeding gums, and bronchitis. Mistake can cause digestive tract burns, ulcers, and may cause gastric perforation and peritonitis. Eye and skin contact can cause burns. Chronic effects: Long-term exposure causes chronic rhinitis, chronic bronchitis, acid erosion, and skin damage. Environmental hazards: Harmful to the environment, can cause pollution to water bodies and soil. Explosion hazard: This product is non-combustible, highly corrosive and irritating, and can cause burns to the human body.
Toxicological information and environmental behavior
Acute toxicity: LD50900mg / kg (rabbit oral); LC503124ppm, 1 hour (rat inhalation) Dangerous characteristic: It can react with some active metal powders and emit hydrogen. Case of cyanide can produce highly toxic hydrogen cyanide gas. Neutralization reaction with alkali and releases a lot of heat. Strongly corrosive.
Combustion (decomposition) product: hydrogen chloride.
Notes on operation
Closed operation, pay attention to ventilation. Operations are as mechanized and automated as possible. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that the operator wear a self-absorption filtering gas mask (full face mask), wear rubber acid and alkali resistant clothing and rubber acid and alkali resistant gloves. Keep away from flammable and combustible materials. Prevent vapors from leaking into the workplace air. Avoid contact with alkalis, amines and alkali metals. Handle with care when handling to prevent damage to packaging and containers. Equipped with leakage emergency treatment equipment. Empty containers may be harmful residues.
Acid mist treatment
During the use of hydrochloric acid, a large amount of hydrogen chloride gas is generated. The suction device can be installed near the container, and cooperated with equipment such as fans, acid mist purifiers, air ducts, etc. to discharge the hydrochloric acid mist outdoors. Acid mist inhibitors can also be added to hydrochloric acid to inhibit the volatilization of hydrochloric acid mist.
Emergency treatment: Quickly evacuate personnel from the leaked contaminated area to a safe area and isolate them to strictly restrict access. It is recommended that emergency handlers wear self-contained positive-pressure respirators and acid- and alkali-proof work clothes. Do not touch the spill directly. Cut off the source of the leak if possible.
Small leaks: Mix with sand, dry lime or soda ash. It can also be rinsed with a large amount of water and diluted into the waste water system.
Large spills: build dikes or dig pits for containment. Transfer to a tanker or special collector with a pump and recycle or transport it to a waste disposal site for disposal.
Hazardous characteristics: It can react with some active metal powders and emit hydrogen. Case of cyanide can produce highly toxic hydrogen cyanide gas. Neutralize with alkali and release a lot of heat. Has strong corrosiveness.
Hazardous combustion products: Hydrogen chloride.
Extinguishing methods: Neutralize with alkaline substances such as sodium bicarbonate, sodium carbonate, slaked lime, etc. Can also be saved with plenty of water.
Skin contact: Remove contaminated clothing immediately, rinse with plenty of running water for at least 15 minutes, and apply weak alkaline substances such as soapy water. Seek medical attention.
Eye contact: Immediately lift the eyelids and rinse thoroughly with plenty of running water or saline for at least 15 minutes. Seek medical attention.
Inhalation: Quickly leave the scene to fresh air. Keep your airways open. If breathing is difficult, give oxygen. If breathing stops, give artificial respiration immediately. Seek medical attention.
Ingestion: Rinse mouth with water and seek medical advice.