Description

Propynol Ethoxylate is a specialized non-ionic surfactant and reactive intermediate derived from the ethoxylation of propargyl alcohol. This compound is valued for its unique terminal alkyne functionality, which enables click chemistry reactions, particularly copper-catalyzed azide-alkyne cycloaddition (CuAAC). It serves as a critical building block for researchers and manufacturers in advanced material science and specialty chemical synthesis. Key industries that utilize this product include pharmaceuticals, polymer chemistry, and surface science for creating functionalized polymers, coatings, and bioconjugates.

Application

• As a key monomer or macromonomer in the synthesis of functional polymers via click chemistry.
• As a reactive surfactant or stabilizer in emulsion and dispersion polymerization processes.
• In the surface modification of nanoparticles and materials to introduce alkyne groups for further functionalization.
• As a building block for dendrimers and hyperbranched polymers with precise architecture.
• In bioconjugation strategies for labeling biomolecules such as proteins, peptides, and oligonucleotides.
• For the development of hydrogels and cross-linked networks with tunable properties.
• In the formulation of specialty coatings and adhesives requiring specific surface energy characteristics.
• As an intermediate in organic synthesis for pharmaceuticals and agrochemicals.

Basic Information

Product Name	Propynol Ethoxylate
CAS No.	3973-18-0
Molecular Formula	C5H8O2 (for 1 EO unit, typical)
Molecular Weight	100.12 g/mol (for 1 EO unit)
Synonyms	Propargyl Alcohol Ethoxylate; 2-Propyn-1-ol, ethoxylate; Poly(oxy-1,2-ethanediyl), α-(2-propyn-1-yl)-ω-hydroxy-; Ethoxylated Propargyl Alcohol; Propargyl-terminated Polyethylene Glycol (PEG); Alkyne-PEG-OH; Propargyl-PEG; Propargyl Alcohol EO Adduct
EINECS	223-603-8

Quality Control

Our Propynol Ethoxylate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. Key parameters monitored include assay (by HPLC or NMR), degree of ethoxylation, water content, and residual catalyst levels. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). The product is hygroscopic (moisture-sensitive) and should be kept under an inert atmosphere (e.g., nitrogen) for long-term storage to prevent oxidation and moisture absorption. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC/NMR)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Average n (EO units)	As per customer grade (e.g., n=1, 3, 9)
pH (5% solution)	5.0 - 7.0

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.