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2-Butyne-1,4-diol is an alkyne diol compound with both terminal hydroxyl groups and a central triple bond, making it highly reactive and versatile.
2-Butyne-1,4-diol is used in various chemical processes, including synthesis of pharmaceuticals, agrochemicals, dyes, and crosslinking agents.
Its bifunctional nature allows it to act as an intermediate in the production of polymers, solvents, and corrosion inhibitors.
CAS Number: 110-65-6
EC Number: 203-788-6
Molecular Formula: C4H6O2
Molecular Weight: 86.09 g/mol
Synonyms: 2-Butyne-1,4-diol, 1,4-Butynediol, But-2-yne-1,4-diol, Acetylenedicarbinol, Acetylenediol, BD-yne, 2-Butyne glycol, 1,4-Dihydroxy-2-butyne, Technical Butynediol, Butynediol reagent grade, Crosslinking Agent 2-Butyne-1,4-diol
APPLICATIONS
2-Butyne-1,4-diol is used as an intermediate in the synthesis of herbicides, insecticides, and growth regulators.
2-Butyne-1,4-diol is applied in the production of pharmaceuticals, especially in manufacturing APIs and active intermediates.
2-Butyne-1,4-diol is used in the production of dyes and optical brighteners.
2-Butyne-1,4-diol is a key intermediate for crosslinking agents in polymer and resin technologies.
2-Butyne-1,4-diol is employed in the formulation of corrosion inhibitors and stabilizers.
2-Butyne-1,4-diol is also found in chemical synthesis processes where a bifunctional alkyne and diol are needed.
2-Butyne-1,4-diol is used in the production of synthetic resins, where it serves as a versatile intermediate for creating high-performance polymers and coatings.
2-Butyne-1,4-diol is employed in the formulation of adhesives, providing excellent bonding strength and durability in both industrial and consumer-grade adhesives.
2-Butyne-1,4-diol is utilized in the manufacture of plasticizers, where it improves the flexibility and processing properties of plastics, particularly in flexible polyvinyl chloride (PVC) products.
2-Butyne-1,4-diol is applied in the production of surfactants, enhancing the wetting and emulsifying properties of formulations used in cleaning products, detergents, and personal care items.
2-Butyne-1,4-diol is used in the production of solvents for paints and coatings, where it acts as a solvent to aid in the dissolution of various resins, ensuring smooth application and drying properties.
2-Butyne-1,4-diol is employed in the synthesis of specialty chemicals, where it acts as a key building block for the development of other functional compounds with applications in various industries.
2-Butyne-1,4-diol is used in the formulation of antifreeze agents, where it contributes to reducing the freezing point of liquids, making it effective in cooling systems.
2-Butyne-1,4-diol is applied in the development of polymers for coatings and paints, where it enhances the overall performance and stability of the end products.
2-Butyne-1,4-diol is utilized in the production of lubricants and greases, where it helps improve the performance of these products by enhancing their viscosity and reducing wear on metal surfaces.
2-Butyne-1,4-diol is used in the formulation of hydraulic fluids, providing high viscosity and stability to fluids used in various hydraulic systems and machinery.
2-Butyne-1,4-diol is employed in the production of chemical intermediates, where it serves as a versatile reagent for the synthesis of a wide range of chemicals.
2-Butyne-1,4-diol is used in the synthesis of polyurethanes, where it acts as a chain extender in the production of high-performance foams, coatings, and elastomers.
2-Butyne-1,4-diol is applied in the production of agricultural chemicals, where it is used in the formulation of herbicides and pesticides, improving their effectiveness and stability.
2-Butyne-1,4-diol is used in the creation of dental materials, where it helps enhance the performance and stability of dental adhesives and sealants.
2-Butyne-1,4-diol is employed in the manufacture of hydraulic and brake fluids, where it contributes to the stability and performance of these critical automotive fluids.
2-Butyne-1,4-diol is used in the formulation of perfumes and fragrances, where it serves as a solvent that aids in the dispersion of essential oils and fragrance compounds.
2-Butyne-1,4-diol is applied in the development of water-based coatings, improving the overall performance and durability of paints used in various industrial and commercial applications.
2-Butyne-1,4-diol is utilized in the creation of heat-resistant materials, where it contributes to the development of products that can withstand extreme temperatures.
2-Butyne-1,4-diol is used in the formulation of sealants and caulks, providing high-performance sealing properties for use in construction and automotive industries.
2-Butyne-1,4-diol is applied in the synthesis of polyester resins, where it contributes to the production of high-quality resins used in the manufacturing of fiberglass and other composite materials.
2-Butyne-1,4-diol is used in the creation of high-performance foams, where it improves the flexibility, resilience, and durability of foam materials used in various applications, including furniture and packaging.
2-Butyne-1,4-diol is employed in the manufacture of high-strength fabrics and textiles, where it enhances the properties of fibers used in clothing, upholstery, and other fabric-based products.
2-Butyne-1,4-diol is used in the development of advanced coatings for electronics, improving the performance and longevity of protective coatings on electronic components.
2-Butyne-1,4-diol is applied in the production of insulation materials, where it contributes to the development of high-performance materials used in thermal and sound insulation.
2-Butyne-1,4-diol is used in the formulation of biodegradable plastics, where it contributes to the development of environmentally friendly products that decompose more easily than conventional plastics.
2-Butyne-1,4-diol is employed in the production of specialty lubricants for high-precision machinery, where it enhances the stability and performance of lubricants in demanding industrial applications.
2-Butyne-1,4-diol is used in the synthesis of specialty polyols, where it serves as a building block for the development of various polyurethanes and other advanced polymeric materials.
2-Butyne-1,4-diol is used in the creation of pharmaceutical products, where it acts as a solubilizing agent in formulations of certain drugs.
2-Butyne-1,4-diol is applied in the development of cleaning and degreasing agents, enhancing the effectiveness of industrial and household cleaners in removing oils, grease, and dirt.
2-Butyne-1,4-diol is employed in the production of cosmetic products, where it helps stabilize formulations and improves the texture of creams, lotions, and other personal care products.
DESCRIPTION
2-Butyne-1,4-diol appears as a white crystalline solid or slightly yellow powder, depending on purity and storage.
2-Butyne-1,4-diol has high chemical reactivity due to its internal triple bond and hydroxyl groups, making it a useful intermediate.
2-Butyne-1,4-diol is miscible with water and many polar organic solvents, allowing broad compatibility in reactions.
2-Butyne-1,4-diol must be handled with care due to potential toxicity and irritant properties, and it is reactive under strong oxidative or reductive conditions.
2-Butyne-1,4-diol is a colorless, hygroscopic liquid with a chemical structure that makes it highly versatile in a wide range of chemical and industrial applications.
2-Butyne-1,4-diol is an important intermediate in organic synthesis, widely used in the production of polymers, resins, and plasticizers, as well as in various specialty chemicals.
2-Butyne-1,4-diol is valued for its ability to act as a solvent and chain extender in the production of polyurethanes, providing flexibility and durability to the final product.
2-Butyne-1,4-diol is known for its high chemical stability and resistance to heat, moisture, and chemicals, making it suitable for use in demanding industrial environments.
2-Butyne-1,4-diol is a highly functional chemical that plays a significant role in the production of a wide variety of industrial materials, including adhesives, lubricants, and coatings.
2-Butyne-1,4-diol is a key building block in the synthesis of polyurethanes, helping to produce high-performance foams, coatings, and elastomers.
2-Butyne-1,4-diol has excellent compatibility with both water-based and solvent-based systems, providing versatility in formulation and manufacturing processes.
2-Butyne-1,4-diol is known for its high solubility in water and many organic solvents, making it useful as a solvent in a variety of chemical processes.
2-Butyne-1,4-diol is widely used in the production of eco-friendly materials, including biodegradable plastics and water-based coatings, contributing to sustainable industrial practices.
2-Butyne-1,4-diol is a non-toxic, low-odor compound, making it safe for use in consumer products, including those in the pharmaceutical, cosmetic, and food packaging industries.
PROPERTIES
Chemical Formula: C4H6O2
Molecular Weight: 86.09 g/mol
Common Name: 2-Butyne-1,4-diol
Appearance: White to off-white crystalline solid
Odor: Mild, characteristic
Solubility: Miscible with water, alcohols, acetone
Boiling Point: ~240°C (decomposes)
Melting Point: ~59–61°C
Density: ~1.12 g/cm³ at 20°C
Flash Point: >110°C (closed cup)
Stability: Stable under recommended storage
Storage Temperature: 5–25°C
Shelf Life: 12–24 months in sealed containers
FIRST AID
Inhalation:
Move person to fresh air.
Seek medical attention if symptoms occur.
Skin Contact:
Remove contaminated clothing. Wash skin with soap and water.
Seek medical help if irritation develops.
Eye Contact:
Flush eyes with water for 15 minutes.
Seek medical attention immediately.
Ingestion:
Do not induce vomiting.
Rinse mouth with water.
Seek immediate medical attention.
Note to Physicians:
Treat symptomatically.
Watch for gastrointestinal and respiratory symptoms.
HANDLING AND STORAGE
Handling:
Use proper PPE (gloves, goggles, protective clothing).
Avoid contact with eyes and skin.
Work in a well-ventilated area.
Avoid dust and vapor generation.
Spill and Leak Procedures:
Sweep or vacuum carefully.
Avoid generating dust.
Dispose in accordance with local environmental regulations.
Storage:
Store in a tightly sealed container in a cool, dry, well-ventilated area.
Keep away from strong oxidizing agents, heat, and open flames.
Handling Cautions:
Avoid inhalation and direct contact.
Handle in accordance with good industrial hygiene practices.
