What is aniline?
Aniline (Aniline), also known as aminobenzene, is an organic compound with formula C6H7N and is a colorless oily liquid that is decomposed at 370℃. Slightly soluble in water, easily soluble in ethanol, ethyl ether and other organic solvents. CAS No. : 62-53-3.
On October 27, 2017, aniline was included in the list of carcinogens published by the International Agency for Research on Cancer (IARC) of the World Health Organization.
Action and use of aniline
Aniline is one of the most important intermediates in the dye industry, which can be used in the manufacture of acid ink blue G, acid medium BS, acid light yellow, direct orange S, direct peach, indigo, dispersed yellow brown, cationic peach FG and reactive brilliant red X-SB. In terms of organic pigments, it is used to manufacture gold red, gold red g, big red powder, phenol cyanine red, oil soluble black, etc. In printing and dyeing industry for dye aniline black; In the pesticide industry for the production of many pesticides, fungicides such as DDV, weed ether, toxoxamine, etc.; Aniline is an important raw material of rubber auxiliaries, used in the manufacture of antioxidant A, antioxidant ding, antioxidant RD and antioxidant 4010, accelerator M, 808, D and CA, etc. It can also be used as the raw material of pharmaceutical sulfonamide, and also as the intermediate of the production of spices, plastics, varnishes, film, etc. And can be used as a stabilizer in explosives, anti-explosion agent in gasoline and as a solvent; Can also be used to manufacture hydroquinone, 2- phenylindoles, etc.
Aniline is an important raw material for the production of pesticides, from which aniline can be derived N-alkyl aniline, alkyl aniline, o-nitroaniline, cyclohexylamine, etc., and can be used as an intermediate of fungicide sodium dirust, seed mix, insecticides triazophosphorus, pyrimazion, quetiaphosphorus, herbicide methachlor, cycloazinone, imidazolinolinic acid, etc.
Overview of the dangers of aniline
Dangerous characteristics:
Flammable in case of open fire and high heat. Strong reactions with acids, halogens, alcohols and amines will cause combustion.
Harmful combustion products:
Carbon monoxide, carbon dioxide, nitrogen oxide.
Environmental hazards:
It is harmful to the environment and can cause pollution to the water.
Health hazards:
This product mainly causes methemoglobinemia, hemolytic anemia and liver and kidney damage. I transcutaneous absorption.
Acute poisoning: The patient has cyanosis of mouth, finger and ear, headache, dizziness, nausea, vomiting, finger numbness, trance and so on.
Severe poisoning, the skin, mucous membranes serious blue, breathing difficulties, convulsions, even coma, shock. Hemolytic jaundice, toxic hepatitis, and kidney damage occurred. Chemical cystitis may be present. Eye contact causes conjunctival keratitis.
Chronic poisoning: The patient presents with neurasthenic syndrome, accompanied by mild cyanosis, anemia, and enlargement of the liver and spleen. Skin contact can cause eczema.
Hazard of ignition and explosion:
This product is flammable and poisonous.
Handling notes of aniline:
Closed operation to provide adequate local exhaust air. Operation as mechanized and automated as possible. Operators must be specially trained and strictly abide by operating procedures. It is recommended that operators wear a filter type gas mask (half mask), safety protective glasses, anti-gas permeating work clothes, and rubber oil-resistant gloves. Keep away from fire, heat source, no smoking in the workplace. Use explosion-proof ventilation systems and equipment. Prevent steam from escaping into the workplace air. Avoid contact with oxidants and acids. When handling, light loading and unloading should be done to prevent damage to packaging and containers. Equipped with the corresponding variety and quantity of fire equipment and leakage emergency treatment equipment. An empty container may contain harmful residue.
Storage notes of aniline:
Store in a cool, ventilated warehouse. Keep away from fire and heat. The temperature of the storage room should not exceed 30℃, and the relative humidity should not exceed 80%. Avoid light preservation. The package should be sealed and not in contact with air. It should be stored separately from oxidants, acids and edible chemicals, and should not be mixed. Equipped with the corresponding variety and quantity of fire equipment. The storage area should be equipped with leak emergency treatment equipment and suitable holding materials.
Transport notes of aniline:
Transport information
Dangerous Goods No. : 61746
UN number: 1547
Package Type: O52
Packing method: small opening steel drum; Thread mouth glass bottle, iron lid pressure mouth glass bottle, plastic bottle or metal bucket (jar) outside ordinary wooden box; Threaded glass bottles, plastic bottles or tinned steel barrels (cans) are covered with plinth box, fiberboard box or plywood box.
Matters needing attention
Before transportation, check whether the packaging container is complete and sealed, and ensure that the container does not leak, collapse, fall, or damage during transportation. It is strictly prohibited to mix with acids, oxidants, food and food additives. During transportation, the transport vehicle shall be equipped with the corresponding variety and quantity of fire fighting equipment and leakage emergency treatment equipment. During transportation, it should be protected from sun exposure, rain and high temperature. Highway transportation route as prescribed.
Aniline emergency disposal
Leakage emergency treatment
Leave quickly leak contaminated area personnel to safe areas, and in isolation, restricted access. Cut off the fire. Emergency personnel are advised to wear self-contained positive pressure breathing apparatus and protective clothing. Do not contact spills directly. Cut off the source of leakage as much as possible. Prevent the flow into the sewer, flood drainage ditch and other restricted Spaces.
Small leakage: adsorption or absorption with sand or other non-combustible materials.
A large number of leak: constructing dike to dig a hole or asylum. Cover with foam to reduce steam hazard. Use explosion-proof pump to tank lorry or dedicated collector, recycling or shipped to the disposal of waste places.
Fire extinguishing methods: firefighters must wear a mask, outside the safe distance, in the direction of the wind fire.
Extinguishing agent: water, foam, carbon dioxide, sand.
First aid measure
Skin contact: remove contaminated clothing and immediately with soap and water and water to thoroughly flushed the skin. Seek medical attention.
Eye contact: Immediately lift eyelids and rinse thoroughly with plenty of running water or saline for at least 15 minutes. Seek medical attention.
Inhalation: Quickly remove from the scene to fresh air. Keep your airway clear. Give oxygen if breathing is difficult. If breathing stops, give artificial respiration immediately. Seek medical attention.
Eating: drink enough water, vomiting. Seek medical attention.
