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[Chemical Knowledge]：Properties and Uses of Secondary Butanol

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The properties and uses of sec-butanol are of great significance in the field of chemical production raw materials. In this paper, the properties, production methods, uses and safety assessment of sec-butanol will be discussed in detail in order to have a more comprehensive understanding of it.

1. the properties of secondary butanol

secondary butanol is a colorless transparent flammable liquid with a special odor. Its molecular formula is C4H10O, the structure is CH3CH(OH)CH2CH3. Sec-butanol has a boiling point of 100.6°C, a melting point of -114.7°C, a relative density of 0.7805(20/4°C), a refractive index of 1.3993, and a flash point of 12°C. In addition, sec-butanol is soluble in water and miscible in most organic solvents such as alcohols and ethers.

2. of secondary butanol production methods

of secondary butanol production methods mainly include the following:

1. Ethylene hydration method: ethylene and water in the presence of sulfuric acid catalyst, at 130-140 ℃, 13-20MPa under the conditions of direct water synthesis of secondary butanol.
2. Acetic acid method: by acetic acid and acetaldehyde in the presence of sulfuric acid catalyst, at atmospheric pressure, 80-100 ℃ esterification reaction to generate sec-butyl acetate, and then by hydrolysis, deacidification distillation to the finished product.

3. of the use of secondary butyl alcohol

of secondary butyl alcohol in the field of chemical production of raw materials has a wide range of uses, mainly in the following aspects:

1. solvent: secondary butyl alcohol can be used as oil, paint, rubber, artificial leather and other solvents, can also be used in the manufacture of spices, drugs and detergents.
2. Plasticizer: Secondary butyl alcohol can be used as a plasticizer for plastics and rubber, which can improve the flexibility and processing performance of products.
3. Stabilizer: Sec-butanol can be used as a stabilizer for some polymerization reactions, which can improve the quality and yield of the product.
4. Fuel Additives: Sec-butanol can be used as a fuel additive to improve fuel combustion performance and reduce harmful emissions. Safety evaluation
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4. of secondary butyl alcohol Although
secondary butyl alcohol has a wide range of uses, its toxicity and environmental hazards also need to be paid attention. Long-term exposure to sec-butanol may cause irritation of the skin, eyes and respiratory system, and even affect the central nervous system. Therefore, it is necessary to strictly abide by relevant safety regulations during production and use to ensure the safety and health of operators. In addition, sec-butanol also has certain harm to the environment, which may lead to water and soil pollution, and environmental protection measures such as wastewater treatment and waste recycling need to be strengthened.

In conclusion, sec-butanol has important properties and uses in the field of chemical production raw materials, but its safety and environmental protection also need to be paid attention. Only scientific and rational use of secondary butanol can give full play to its role, while ensuring the safety and health of humans and the environment.

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