Electro Plating, High-Purity Solvents

1, 4-Butynediol (BOZ)

2-Butyne-1,4-diol, commonly known as butynediol or BOZ, is a vital organic compound with the chemical formula C4H6O2. This alkyne-functionalized diol is synthesized via the Reppe process, involving the reaction of acetylene with formaldehyde under high pressure. As a white to yellowish crystalline solid, it serves as a multifaceted intermediate in industrial chemistry. Its molecular structure features a triple bond flanked by two primary hydroxyl groups, providing exceptional reactivity for hydrogenation, halogenation, and polymerization. Butynediol is primarily utilized as a precursor for 1,4-butanediol and butenediol, which are critical in producing plastics, fibers, and pharmaceuticals. Beyond its role as a building block, it functions effectively as a corrosion inhibitor in acidic environments and a brightening agent in electroplating processes. Its high solubility in water and alcohols makes it versatile for liquid-phase reactions. Safety protocols are essential during handling due to its toxicity and potential for exothermic decomposition when contaminated or heated excessively.

Attributes

Key Features and Benefits

High chemical reactivity due to the internal triple bond and terminal hydroxyl groups.
Effective corrosion inhibition across various acidic industrial cleaning and pickling applications.
Superior grain-refining capabilities when used as a brightener in nickel and copper electroplating.
High purity levels ensure consistent performance in sensitive pharmaceutical and agrochemical syntheses.
Excellent solubility in polar solvents facilitates easy formulation in aqueous and organic systems.
Acts as a versatile intermediate for specialized cross-linking agents and polymer modifiers.
Enhances the durability and finish of metal coatings through controlled deposition.
Thermally stable under proper storage conditions for industrial longevity. Provides reliable results for manufacturers worldwide.

Specifications

Technical Highlights

IUPAC Name: 2-butyne-1,4-diol; CAS Number: 110-65-6; Chemical Formula: C4H6O2.
Molecular weight approximately 86.09 g/mol with a melting point of 58 degrees Celsius.
Boiling point of 238 degrees Celsius at atmospheric pressure; flashes at 152 degrees.
Exhibits high solubility in water (up to 3740 g/L at 25 degrees).
Undergoes catalytic hydrogenation to form butenediol or saturated 1,4-butanediol under hydrogen.
Reacts with halogens to produce halogenated diols via addition to the alkyne bond.
Subject to dehydration reactions for forming furan derivatives in specific catalytic environments.
Vapor pressure remains low, minimizing inhalation exposure risks during industrial processing. Ensures safety and efficacy in production.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Electroplating industry: Vital brightening agent and grain refiner for nickel, copper, and tin plating.
Chemical Synthesis: Key intermediate for producing 1,4-butanediol, 2-butene-1,4-diol, and various specialized heterocyclic compounds.
Metallurgy: Effective acid pickling inhibitor to prevent metal dissolution during rust removal and cleaning cycles.
Pharmaceuticals: Building block in the synthesis of vitamin B6, various antimicrobial agents, and herbicides.
Textile Auxiliaries: Used in the manufacture of brighteners and finishing agents for synthetic fibers and fabrics.
Petroleum Industry: Employed as an additive in oil well acidizing to protect tubing from corrosive damage.
Polishing compounds: Component in metal cleaning formulations. Essential for diverse modern industries.