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Introduction to 1,4-Butynediol

1,4-Butynediol (C₄H₆O₂) is a vital organic chemical intermediate with significant industrial importance. As a four-carbon diol containing a triple bond, its unique molecular structure enables diverse reactivity patterns. Understanding related compounds like 1-butyne structure and 2-butyne formula provides essential context for appreciating the distinctive chemical behavior of this compound.

Key Structural Relationships

While 1-butyne structure (HC≡C-CH₂-CH₃) and 2-butyne structural formula (CH₃-C≡C-CH₃) represent terminal and internal alkynes respectively, 1,4-butynediol (HO-CH₂-C≡C-CH₂-OH) positions hydroxyl groups at both ends of an alkyne chain, enabling bifunctional reactivity. This structural arrangement supports dual reaction pathways: alkyne transformations and alcohol functionalities.

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The global market for 1,4-butynediol is experiencing robust growth, projected to reach $780 million by 2028, with a CAGR of 5.7%. This expansion is driven by increasing demand across pharmaceutical manufacturing, specialty polymers, and corrosion inhibitors. Recent technological advances in selective hydrogenation processes have significantly improved production efficiencies and reduced manufacturing costs.

Technical Specifications and Properties

Parameter	Specification	Test Method	Significance
Chemical Formula	C₄H₆O₂	Elemental Analysis	Molecular composition
Molecular Weight	86.09 g/mol	Mass Spectrometry	Dosage calculations
Appearance	White crystalline solid	Visual Inspection	Purity indicator
Melting Point	58-61°C	DSC	Processing temperature
Boiling Point	145°C at 10 mmHg	Distillation	Purification parameters
Density	1.21 g/cm³ at 20°C	Pyknometer	Transport & storage
Solubility	Water: 400 g/L (20°C)	Titration	Formulation compatibility
Purity (HPLC)	≥99.5%	HPLC-UV	Pharmaceutical suitability
Flash Point	128°C (closed cup)	ASTM D93	Safety handling
Storage Temperature	2-8°C (recommended)	Stability testing	Shelf-life preservation

Industrial Applications

Pharmaceutical Manufacturing

1,4-Butynediol serves as a critical intermediate in synthesizing various pharmaceutical compounds, particularly GABA analogs and vitamin B6 precursors. The compound's alkyne functionality enables click chemistry approaches for drug conjugation, while its diol structure provides points for further derivatization. Its stereochemical properties influence the chirality of resulting biologically active molecules.

Electroplating & Metal Finishing

In electroplating baths, 1,4-butynediol functions as a brightening agent that improves the microstructural properties of deposited metal layers. Industrial studies demonstrate concentration optimizations between 30-50 ppm yield maximum brightness in nickel plating without compromising deposit ductility. Recent advances include synergistic formulations with novel surfactants for nanocrystalline deposition.

Polymer Chemistry

The unique properties of 1,4-butynediol enable the synthesis of specialized polymers including:

Photocurable resins for 3D printing applications
Water-soluble conductive polymers
Crosslinkable elastomers with tailored hardness
Biodegradable polyester precursors

Technical Questions & Answers

Q: What is the recommended storage protocol for 1,4-butynediol?

A: Optimal preservation requires storage in airtight container111s at controlled temperatures (2-8°C) under inert atmosphere. Exposure to moisture should be minimized to prevent hydration and polymerization reactions. Under proper conditions, shelf life exceeds 24 months.

Q: How does the structure of 1,4-butynediol differ from 2-butyne formula compounds?

A: While both contain C₄ alkyne structures, the 2-butyne formula (CH₃C≡CCH₃) has terminal methyl groups, whereas 1,4-butynediol positions hydroxyl groups at both molecular terminals (HOCH₂C≡CCH₂OH), enabling bifunctional chemistry not possible with symmetric alkynes.

Q: What industrial-grade purity specifications apply to this chemical?

A: Technical grade (≥98% purity) suits electroplating applications, while pharmaceutical synthesis requires ultra-high purity grades (≥99.8%) with strict control over heavy metal impurities (

Q: Are there special handling requirements due to material reactivity?

A: Proper PPE (nitrile gloves, face shield) is mandatory due to skin irritation potential. Respiratory protection is required during dust-generating operations. Fire hazards necessitate grounding protocols during transfer. Compatibility charts should be consulted before mixing with oxidizing agents.

Q: What packaging options are available for bulk shipment?

A: Commercial quantities are typically packed in polyethylene-lined steel drums (200kg) or isotanks (up to 20 MT), depending on transportation requirements. Special non-reactive liners prevent degradation during extended transit.

Company Profile

Hebei Tenger Chemical Technology Co., Ltd.

As a leading specialty chemical manufacturer, we maintain GMP-compliant facilities producing premium-grade 1,4-Butynediol for global distribution. Our quality management systems are ISO 9001:2015 certified, with dedicated production lines producing pharmaceutical, technical, and electronics grade products.

Contact Information

📍 Address: 3-2-501, North Courtyard, West District, Jiuli Courtyard, Yuhua District, Shijiazhuang City, Hebei, China
📞 Phone: +86-13673136186
✉️ Email: yanzhe@tengerchemical.com
🌐 Website: www.tengerchemical.com

Product Specifications

Our 1,4-Butynediol is manufactured under strict quality controls:

Multi-stage distillation purification
Strict impurity profile control
Customizable particle size distributions
Pharmaceutical-grade packaging options

Technical Citations

"Recent advances in selective hydrogenation of alkynols have significantly improved the industrial production efficiency of 1,4-butynediol. Continuous flow reactors with novel Pd-Pb/CaCO₃ catalysts demonstrate conversion rates exceeding 95% with minimized over-hydrogenation byproducts."

Source: Industrial & Engineering Chemistry Research, 2022 https://pubs.acs.org/doi/10.1021/acs.iecr.2c01765

"The molecular architecture of 1,4-butynediol enables unique polymerization pathways for developing functional hydrogel networks. Dual-cure systems incorporating this monomer show promising results in 4D printing applications requiring post-fabrication shape morphing."

Source: Journal of Polymer Science https://onlinelibrary.wiley.com/doi/full/10.1002/pol.20220051

"Electrochemical studies demonstrate that optimized concentrations of 1,4-butynediol in nickel electroplating baths produce exceptionally smooth deposits with hardness values exceeding 500 HV. The leveling mechanism operates through adsorption-induced inhibition at cathode asperities."

Source: Electrochimica Acta https://www.sciencedirect.com/science/article/abs/pii/S0013468622011131

Market Trends and Future Outlook

The application landscape for 1,4-butynediol is evolving rapidly. Beyond traditional uses, emerging applications include:

Lithium-Ion Battery Additives: Improves electrolyte stability and SEI formation
Agriculture: Precursor for novel plant growth regulators
Water Treatment: Corrosion inhibitor in cooling tower systems
Cosmetics: Chelating agent in anti-aging formulations

Production innovation continues to advance, particularly in China-based facilities that now account for over 65% of global manufacturing capacity. Environmental regulations are driving adoption of closed-loop processes that recover solvents and catalysts. Future research directions include biocatalytic production routes and nanoparticle formulations for targeted drug delivery systems.

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