Hazard Overview

Health hazards: Irritable to the skin and mucous membranes, and has an anesthetic effect on the central nervous system. Acute poisoning: Inhaling high concentrations of this product in a short period of time may cause obvious irritation symptoms in the eyes and upper respiratory tract, conjunctival and pharyngeal congestion, dizziness, headache, nausea, vomiting, chest tightness, limb weakness, unsteady gait, and blurred consciousness. Severe patients may experience restlessness, convulsions, and coma. Chronic poisoning: Long term exposure can lead to neurasthenia syndrome, hepatomegaly, and menstrual abnormalities in female workers. Dry, cracked, and dermatitis skin.

Environmental hazards: It poses a serious threat to the environment and can cause pollution to the air, water environment, and water sources.

Explosive hazard: This product is flammable and irritating.

Emergency measures

Skin contact: Remove contaminated clothing and thoroughly rinse the skin with soap and water

Eye contact: Lift the eyelids and rinse with flowing water or saline solution. Seek medical attention

Inhalation: Quickly leave the scene and move to a place with fresh air. Keep the respiratory tract unobstructed. If breathing is difficult, administer oxygen. If breathing stops, immediately perform artificial respiration. Seek medical attention

Ingestion: Drink plenty of warm water and induce vomiting. Seek medical attention

Fire protection measures

Hazardous characteristics: Flammable, its vapor can form explosive mixtures with air, and can cause combustion and explosion when exposed to open flames or high heat energy. Can react strongly with oxidants. Excessive flow rate can easily generate and accumulate static electricity. Its vapor is heavier than air and can spread to a considerable distance at lower levels. It will ignite and reignite when exposed to a source of fire.

Harmful combustion products: carbon monoxide, carbon dioxide

Fire extinguishing method: Spray water to cool the container, and if possible, move the container from the fire scene to an open area. If the container in the fire has changed color or produced sound from the safety relief device, it must be evacuated immediately. Extinguishing agent: foam, dry powder, carbon dioxide, sand. Extinguishing fire with water is ineffective

Emergency response to leakage

Quickly evacuate personnel from the contaminated area to a safe zone, isolate them, and strictly restrict their entry and exit. Cut off the fire source. It is recommended that emergency responders wear self-contained positive pressure respirators and protective clothing. Cut off the leakage source as much as possible. Prevent the flow into restricted spaces such as sewers and drainage ditches. Minor leakage: Absorb with activated carbon or other inert materials. It can also be brushed with lotion made of incombustible dispersant, and the washing solution is diluted and discharged into the wastewater system. Massive leakage: Construct embankments or dig pits to contain it. Cover with foam to reduce steam disaster. Transfer to a tanker or dedicated collector using an explosion-proof pump, and recycle or transport to a waste disposal site for disposal

Handling and Storage

Precautions for operation: Closed operation, strengthen ventilation. Operators must undergo specialized training and strictly adhere to operating procedures. It is recommended that operators wear self-priming filter type gas masks (half face masks), chemical safety goggles, work clothes that prevent toxic substances from penetrating, and rubber oil resistant gloves. Keep away from sources of fire and heat, and smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Prevent steam leakage into the workplace air. Avoid contact with oxidants. During filling, the flow rate should be controlled and there should be a grounding device to prevent static electricity accumulation. Handle with care during transportation to prevent damage to packaging and containers. Equip with corresponding types and quantities of fire-fighting equipment and emergency response equipment for leaks. Empty containers may contain residual harmful substances

Storage precautions: Store in a cool and ventilated warehouse. Stay away from sources of fire and heat. The storage temperature should not exceed 30 ℃. Keep the container sealed. It should be stored separately from oxidants and avoid mixing storage. Adopt explosion-proof lighting and ventilation facilities. Prohibit the use of mechanical equipment and tools that are prone to generating sparks. The storage area should be equipped with emergency response equipment for leaks and suitable containment materials

Contact control and individual protection

Exposure limit: China 100mg/m3 Former Soviet Union 50mg/m3

Engineering control: The production process is sealed and fully ventilated

Respiratory protection: When the concentration in the air exceeds the standard, wear a self-priming filter type gas mask (half face mask). During emergency rescue or evacuation, air respirators or oxygen respirators should be worn

Eye protection: Wear chemical safety goggles Body protection: Wear work clothes that prevent toxic substances from penetrating Hand protection: Wear rubber oil resistant gloves Other protection: Smoking, eating, and drinking are prohibited on the work site. After work, take a shower and change clothes. Maintain good hygiene habits

Physical and chemical properties

Appearance and Characteristics: Colorless and transparent liquid, with an aromatic odor similar to benzene. Solubility: Insoluble in water, but miscible in most organic solvents such as benzene, alcohols, and ethers

Melting point (℃): -94.9 Boiling point (℃): 110.6 Flash point (℃): 4 Saturated vapor pressure (kPa): 4.89 (30 ℃)

Combustion heat (kJ/mol): 3905.0 Ignition temperature (℃): 535 Critical temperature (℃): 318.6 Critical pressure (MPa): 4.11

Relative density (water=1): 0.87 Relative vapor density (air=1): 3.14 Explosion limit% (V/V): 1.2-7.0

Main use: Used for blending gasoline components and as the main raw material for producing toluene derivatives, explosives, dye intermediates, drugs, etc

Stability and reactivity

Prohibited compound: Strong oxidizing agent

Toxicological data

LD50: 5000 mg/kg (oral administration in rats); 12124mg/kg (rabbit transdermal) LC50: 20003mg/m3, 8 hours (mouse inhalation)

Irritation: 300ppm through the eyes can cause irritation. Rabbit transcutaneous 500mg, moderate irritation

Transportation information

Packaging method: Small opening steel drum; Screw mouth glass bottle, iron cap pressed mouth glass bottle, plastic bottle or metal barrel (can), ordinary wooden box outside

Transportation precautions: The railway transportation of this product is limited to the use of self provided tank trucks by steel enterprises, and approval from relevant departments is required before shipment. Transport vehicles should be equipped with corresponding types and quantities of fire-fighting equipment and emergency response equipment for leaks during transportation. It is best to transport in the morning and evening during summer. The tank truck used for transportation should have a grounding chain, and a perforated partition can be installed inside the tank to reduce static electricity generated by vibration. It is strictly prohibited to mix and transport with oxidants, edible chemicals, etc. During transportation, it should be protected from direct sunlight, rain, and high temperatures. When stopping midway, one should stay away from sources of fire, heat, and high temperature areas. The exhaust pipe of the vehicle carrying the item must be equipped with a flame retardant device, and the use of mechanical equipment and tools that are prone to generating sparks for loading and unloading is prohibited. When transporting by road, follow the prescribed route and do not stay in residential or densely populated areas. It is prohibited to slip during railway transportation. It is strictly prohibited to use wooden boats or cement boats for bulk transportation