Ethylbenzene
Category:
Mainly used in the production of styrene, and then the production of styrene homopolymer and styrene AS the main component of copolymer (ABS, AS, etc.). Ethylbenzene is used in a small amount in the organic synthesis industry, such as the production of acetophenone, ethyl anthraquinone, p-nitroacetophenone, methyl phenyl ketone and other intermediates. Used in medicine as an intermediate between comycin and chloramphenicol. Also used in spices. In addition, it can also be used as a solvent.
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Detailed Introduction
图文详情
Molecular formula: C8H10
Structural formula:
Molecular weight:106.16
Introduction:
Properties: Appearance and properties: colorless liquid, aromatic smell.
Melting point (℃) : -94.9
Boiling point (℃) : 136.2
Relative density (water =1) : 0.87
Relative vapor density (air =1) : 3.66
Saturated vapor pressure (kPa) : 1.33(25.9℃)
Critical temperature (℃) : 343.1
Critical pressure (MPa) : 3.70
Pair value of octanol/water partition coefficient: 3.15
Ethylbenzene flash point (℃) : 15
Ignition temperature (℃) : 432
Explosion limit %(V/V) : 6.7
Lower explosive limit %(V/V) : 1.0
Solubility: insoluble in water, soluble in ethanol, ether and other most organic solvents.
Purpose: Mainly used in the production of styrene, and then the production of styrene homopolymer and styrene AS the main component of copolymer (ABS, AS, etc.). Ethylbenzene is used in a small amount in the organic synthesis industry, such as the production of acetophenone, ethyl anthraquinone, p-nitroacetophenone, methyl phenyl ketone and other intermediates. Used in medicine as an intermediate between comycin and chloramphenicol. Also used in spices. In addition, it can also be used as a solvent.
Health hazard: This product has strong irritation to the skin and mucous membrane, high concentration has anesthetic effect. Acute poisoning: Mild poisoning with dizziness, headache, nausea, vomiting, staggering gait, mild disturbance of consciousness and eye and upper respiratory irritation. In severe cases, coma, convulsions, blood pressure drop and respiratory and circulatory failure occur. There may be liver damage. Direct inhalation of this liquid can cause chemical pneumonia and pulmonary edema. Chronic effects: eye and upper respiratory irritation symptoms, neurasthenia syndrome. The skin appears sticky rough, chapped, peeling.
Dangerous characteristics: flammable, its vapor and air can form explosive mixture, in case of open fire, high heat or contact with oxidant, there is a risk of combustion and explosion. Reacts violently in contact with an oxidant. If the velocity is too fast, static electricity is easy to be generated and accumulated. Its vapor is heavier than air, can spread to a considerable distance at a lower place, when the fire source will catch fire back.
Operation precautions: closed operation, strengthen ventilation. Operators must be specially trained and strictly abide by operating procedures. It is recommended that operators wear a self-priming filter gas mask (half mask), chemical 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. The flow rate should be controlled during filling, and there should be a grounding device to prevent electrostatic accumulation. 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 precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat. The temperature of the warehouse should not exceed 30℃. Keep the container sealed. Should be stored separately from oxidizer, do not mix storage. Explosion-proof lighting and ventilation facilities are adopted. Do not use mechanical equipment and tools that are prone to spark. The storage area should be equipped with leak emergency treatment equipment and suitable holding materials.
Toxicology data: Acute toxicity: LD50:3500mg/kg(rat transoral); 5g/kg(rabbit transdermal).
Dangerous goods mark: F- flammable goods; Xn- Hazardous goods.
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