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2-Butoxyethanol, an organic compound with chemical formula C6H14O2, is a colorless transparent liquid, which is soluble in water, acetone, benzene, ether, methanol, carbon tetrachloride and other organic solvents and mineral oils. It is mainly used as a high boiling point solvent for paints, especially nitro paint, quick drying paint, varnish, enamel and paint remover, and also as an inactive thinner for adhesives, metal detergent, paint remover, fiber wetting agent, pesticide dispersant Drug extractants, resin plasticizers.
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Chemical Formula |
C6H14O2 |
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Exact Mass |
118 |
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Molecular Weight |
118 |
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m/z |
118 (100.0%), 119 (6.5%) |
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Elemental Analysis |
C, 60.98; H, 11.94; O, 27.08 |
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2-Butoxyethanol, also known as ethylene glycol butyl ether, is an organic compound with a wide range of applications. The following is a detailed summary of its uses:
- Paint and coatings: This compound is a high boiling point solvent, particularly suitable for nitro spray paint, quick drying paint, varnish, enamel, and paint stripping agents. It can improve the glossiness and fluidity of the paint film, prevent fogging and wrinkling.
- Ink: A solvent that can be used as printing ink and stamp pad ink.
- Other solvents: used as metal detergents, degreasers, automotive engine detergents, dry cleaning solvents, epoxy resin solvents, etc,It can also be used as a stabilizer for latex paint and an evaporation inhibitor for aircraft coatings.
Chemical industry applications
- Fiber wetting agent: used for wetting and dispersing fibers.
- Pesticide dispersant: helps pesticides disperse evenly in solution, improving the effectiveness of pesticide use.
- Resin plasticizer: used for plasticizing and modifying resins.
- Organic synthesis intermediates: used as raw materials or intermediates for the synthesis of other organic compounds.
- Drug extractant: used for the extraction and purification of drugs.
- Surfactant: can remove oil stains on surfaces of metals, fabrics, glass, plastics, etc.
- Reagent for measuring iron and molybdenum: used in chemical analysis to determine the content of iron and molybdenum.
- Other: Improve emulsification performance by dissolving mineral oil in soap solution as an auxiliary solvent; Used for separating calcium and strontium from nitrates; Used as a solvent for rosin, insect glue, shell resin, indene resin, and ethyl fiber; Used as a solvent for ink, textile dyes, and textile finishing agents.
The invention relates to the chemical industry field, in particular to a preparation method of ethylene glycol monobutyl ether. The preparation method of ethylene glycol monobutyl ether.
The utility model is characterized in that: the ethylene oxide and n-butanol are prepared as the raw material mixed liquid, which is refrigerated for standby; Put high silicon aluminum ratio or all silicon molecular sieve and porous silicon dioxide in muffle furnace for high-temperature roasting, and place the calcined catalyst in the dryer for standby after numbering; Put the feed liquid and calcined catalyst in a reactor for reaction to obtain the product. The catalyst with high silicon aluminum ratio or full silicon molecular sieve and porous silicon dioxide used in the invention has low purchase cost, simple treatment process, greatly simplified production process, reduced production cost, catalyst or model, high selectivity of ethylene glycol monobutyl ether, and high stability.
What are the hazards of this compound?
1.Harm to human health
Acute poisoning
- Inhalation: Vapors are irritating to the respiratory tract and may cause respiratory irritation and liver and kidney damage.
- Skin contact: may cause skin irritation and dermatitis.
- Eye contact: Vapors can be irritating to the eyes and may cause discomfort or damage to the eyes.
- Ingestion: Swallowing is harmful and may cause gastrointestinal discomfort and liver and kidney damage.
Long term exposure
- May lead to chronic poisoning, affecting the blood system, nervous system, etc.
- It may also have adverse effects on the reproductive system, such as affecting sperm quality.
2.Harm to the environment
Polluted water sources and soil
- 2-Butoxyethanol may enter water sources and soil through wastewater discharge or leakage, causing toxic effects on aquatic organisms and soil microorganisms.
- Bioaccumulation may occur in aquatic organisms, causing long-term harm to the ecosystem.
Air pollution
- The vapor generated by this compound diffuses in the air and may cause pollution to the atmospheric environment.
- Under sunlight, it is prone to generate explosive peroxides, increasing the danger of the atmospheric environment.
3.Other hazards
Burn and explode
- This compound poses a risk of combustion and explosion when exposed to open flames, high heat, or in contact with oxidants.
- 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.
Forbidden items
Contact with strong oxidants, strong acids, acyl chlorides, acid anhydrides, halogens and other prohibited substances may cause chemical reactions and produce toxic or explosive substances.
4.Protective measures
Personal protection
- Appropriate personal protective equipment such as goggles, gloves, protective clothing, and masks should be worn during operation.
- Avoid inhaling vapors or skin contact, and use respiratory protective equipment if necessary.
Workplace protection
- It should be operated in a well ventilated environment to reduce the concentration of vapors and exposure risks.
- Provide safety shower and eye wash equipment for timely handling in case of accidents.
Waste disposal
The discarded compound should be treated and disposed of in accordance with relevant environmental regulations to avoid environmental pollution caused by indiscriminate disposal or dumping.
What are the innovative methods for the application of this compound in metal processing?
The innovative applications of this compound in metal processing are mainly reflected in the following aspects:
(1.)Post fire metal surface treatment: A method of using this substance for post fire metal surface treatment has been proposed, which involves specific chemical solution preparation steps to effectively clean the metal surface and remove residues generated by the fire. The specific steps include using a chemical solution mainly composed of the compound, adding specific proportions of silicon oxide, potassium pyrophosphate, trisodium phosphate and other components, mixing, diluting, reacting and cleaning, ultimately achieving the goal of cleaning the metal surface.
(2.)The treatment of wastewater containing diethylene glycol butyl ether: In the surface treatment industry, diethylene glycol butyl ether is a commonly used cleaning agent, and its wastewater treatment is an important issue. A combined biochemical treatment method has been proposed, which can effectively degrade organic matter and remove nitrogen, while reducing the operating costs of wastewater treatment
This method is of great significance for treating wastewater containing diethylene glycol butyl ether, especially in the metal processing industry.
(3.)The synthesis method of ethylene glycol butyl ether: A new synthesis method of ethylene glycol butyl ether was proposed, which uses a supported palladium catalyst to directly produce ethylene glycol butyl ether through butyraldehyde reduction etherification reaction. This method has simple and easy to obtain raw materials, high product selectivity, mild reaction conditions, and belongs to an environmentally friendly process path
This method has significant improvements in reaction temperature, hydrogen pressure, reaction time, etc., significantly reducing the energy consumption and cost of the synthesis process, while improving the selectivity of the product.
What are the alternatives to this compound?
2-butoxyethanol, also known as ethylene glycol butyl ether, is an organic solvent widely used in industry. However, due to its potential harm to human health and the environment, finding suitable alternatives has become particularly important. Here are some possible alternatives:
Ethylene glycol tert butyl ether
- Usage: Mainly used as an additive in water-based systems, latex water dispersible coatings in the coating industry, and as a dispersant, leveling agent, and defoamer.
- Advantages: In the fields of coatings, inks, etc., ethylene glycol tert butyl ether can replace this compound and provide better performance, such as improving drying speed, flatness, glossiness, and adhesion fastness.
Other alcohol ether solvents
- Such solvents as ethylene glycol methyl ether and ethylene glycol ethyl ether can replace the compound in certain applications.
- It should be noted that these substitutes also need to comply with relevant safety operating procedures and environmental requirements when used.
Natural solvents
- Natural solvents such as vegetable oil and natural resins can serve as substitutes for the compound in certain specific applications.
- Advantages: These natural solvents typically have lower toxicity and better biocompatibility, but may require a certain trade-off in performance.
Environmentally friendly solvents
- With the increasing awareness of environmental protection, more and more environmentally friendly solvents have been developed, such as certain bio based solvents, water-based solvents, etc.
- These solvents provide good performance while also having low environmental impact.
Solvent-free system
- In some applications, solvent-free systems can be considered as an alternative to traditional solvent based products.
- Solvent free systems typically combine resin, pigment, and other components directly together through chemical reactions or physical methods, thereby avoiding the use of solvents.
Molecular mechanism of 2-butoxyethanol as a co surfactant
2-Butoxyethanol (ethylene glycol monobutyl ether, CAS number 111-76-2) is an organic compound that combines ether bonds (- O -) and hydroxyl groups (- OH). Its molecular formula is C ₆ H ₁ O ₂, and its molecular weight is 118.17. As an important member of non-ionic surfactants, 2-Butoxyethanol is widely used in the industrial field, especially in coatings, inks, metal cleaning agents and micro lotion systems. Its core function is to regulate interfacial tension through amphiphilic groups (hydrophilic hydroxyl and lipophilic butoxide chains) in the molecular structure, synergistically forming stable micelle or reverse micelle structures with the main surfactant.
Structural regulation of interfacial facial mask: synergistic effect with main surfactant
In the micro lotion or reverse micelle system, 2-Butoxyethanol optimizes the structure of the interface facial mask through the following mechanisms:
Insert between the main surfactant layers to increase the curvature of the interface
The main surfactant (such as sodium dodecyl sulfate, SDS) forms a monolayer at the oil-water interface, and its hydrophobic tail chain (C ₁₂ H ₂₅) extends towards the oil phase, while the hydrophilic head group (- SO ₄⁻) binds to the water phase. The butoxy chain of 2-butoxyethanol can be inserted into the hydrophobic tail chain gap of the main surfactant, enhancing hydrophobic interactions through van der Waals forces. At the same time, the hydroxyl group forms hydrogen bonds with the polar groups of the main surfactant head group (such as - SO ₄⁻), forming a "main co surfactant composite film".
Case: In the W/O (oil in water) micro lotion, when the molar ratio of SDS to 2-Butoxyethanol is 1:2, the thickness of the interfacial facial mask increases from 1.8 nm to 2.5 nm, and the interfacial elastic modulus increases by 40%, which effectively resists the coalescence of oil droplets.
Adjust the fluidity of the facial mask to meet the phase change needs
The ether bond of 2-Butoxyethanol endows the molecule with flexibility, enabling it to rotate freely in the interface membrane, reducing the rigidity of the membrane. When the temperature or composition of the system changes (such as transitioning from W/O to O/W), flexible molecules can maintain interface stability through conformational adjustment.
Experimental data: In the micro lotion containing 2-Butoxyethanol, the viscoelastic modulus (G ') of the interfacial facial mask only decreases by 15% with the increase of temperature (25-60 ℃), while that of the non surfactant system decreases by 50%, indicating that it can buffer the interfacial stress caused by phase change.
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