[Chemical Knowledge]：Properties, uses, upstream and downstream raw materials, storage methods, the role and efficacy of hexylene glycol

Hexanediol Properties

Hexanediol (Hexanediol), chemical formula for C6H14O2, is an important organic chemical raw materials. Its main isomers are 1,6-hexanediol and 2,5-hexanediol. Among them, 1,6-hexanediol (1,6-Hexanediol, referred to as HDO) is more common. Hexanediol is a colorless, transparent liquid with a slightly sweet odor that is miscible with water, alcohols and most organic solvents. Its main physical properties include: melting point of about 42-45°C, boiling point of about 250°C, density of 0.96g/cm³, and low viscosity.

Hexylene glycol uses

Hexanediol has a wide range of applications. It is a key intermediate in the production of polyesters and polyurethanes. Hexanediol, as a diol monomer, can be reacted with diacids to produce polyesters for the manufacture of high-performance fibers, films and engineering plastics. Hexanediol is an important raw material for polyurethane resins, used in the production of polyurethane coatings, adhesives and elastomers. Hexylene glycol is also used as a solvent, lubricant and wetting agent, and has a wide range of applications in cosmetics, personal care products, pesticides, pharmaceuticals and electronic chemicals. For example, in cosmetics, hexylene glycol is used as a humectant and emollient to help improve the texture and experience of the product.

Upstream Feedstock Analysis

The production of hexylene glycol involves a variety of upstream feedstocks and production processes. 1,6-Hexanediol is usually obtained by hydrogenation of adipate esters. Adipic acid esters (e. g., dimethyl adipate, diethyl adipate) are derivatives of adipic acid, which is itself produced by the oxidation of cyclohexane or the hydro-oxidation of benzene. 1,6-Hexanediol can also be obtained by hydrogenation of hexenol. The market supply and price fluctuations of upstream feedstocks such as adipic acid, cyclohexane and hexenol have a direct impact on the production cost and market price of hexanediol.

Downstream products and market demand

The downstream products of hexylene glycol include a variety of polyester and polyurethane materials, which are widely used in textile, construction, automotive, electronics and consumer goods industries. With the global industrialization process and the increase in consumer demand, especially driven by emerging economies, the demand for high-performance materials continues to grow, thereby driving the expansion of the hexylene glycol market. The promotion of environmental protection regulations and the concept of sustainable development has also promoted the research and development and application of green chemical materials. As a low toxicity and renewable chemical raw material, hexylene glycol has a broad market prospect.

Production Process and Technology Progress

There are two main processes for the production of hexanediol: adipate hydrogenation and hexenol hydrogenation. Among them, the adipate hydrogenation method is widely used because of its mature process, easy availability of raw materials and high yield. In recent years, with the continuous progress of catalyst technology and process optimization, the production efficiency and product purity of hexylene glycol have been significantly improved. For example, the development and application of new high-efficiency catalysts have greatly improved the selectivity and conversion rate of hydrogenation reactions. The exploration of green chemical technology, such as the research of bio-based hexylene glycol, also provides a new direction for industrial development.

Market competition and development trend

The global hexamethylene glycol market is highly competitive, with major manufacturers including BASF of Germany, Dow Chemical of the United States and Mitsui Chemical of Japan. These enterprises have significant advantages in production technology, scale effect and market channels. With the increase in market demand and technological advances, emerging companies and regions are also actively deploying hexylene glycol production. For example, as an important part of the global chemical industry, China has invested a lot of resources in the field of hexylene glycol production, and continuously improved its production capacity and technical level.

In the future, the hexylene glycol market will show the following development trends: First, with the increasingly stringent environmental protection regulations, low-toxic and environmentally friendly hexylene glycol products will be more popular; second, the expansion of downstream applications, especially in High-performance materials and applications in emerging industries will further increase market demand; third, continuous innovation in production technology, especially the development of green and intelligent production processes, will improve the sustainability and competitiveness of the industry.

Storage methods and security management

As a chemical product, the storage and transportation of hexylene glycol require strict safety management. Hexanediol should be stored in a cool, dry, well-ventilated warehouse, away from fire, heat and strong oxidants. Storage containers should be sealed to prevent leakage and moisture absorption. During transportation, severe vibration and collision shall be avoided, and mixing with toxic and harmful substances is strictly prohibited. Operators should wear the necessary protective equipment, such as protective gloves, goggles and protective clothing, to avoid skin and eye contact.

Summary

Hexanediol, as an important organic chemical raw material, has a wide range of applications and market prospects. Its production involves a variety of upstream raw materials and processes, and the market is highly competitive but has great potential. With the advancement of environmental protection regulations and technological advances, the production and application of hexylene glycol will be more green, efficient and diversified. In the process of storage and transportation, safety management regulations should be strictly followed to ensure product quality and personnel safety. Hexanediol will continue to play an important role in the future chemical industry, promoting the development and innovation of related industries.