Octaethylene Glycol CAS 5117-19-1

Aure Chemical Supplies Octaethylene Glycol CAS 5117-19-1 for PEG Linker and Specialty Synthesis

Octaethylene glycol, also known as HO-PEG8-OH, is a well-defined polyethylene glycol oligomer with exactly eight ethylene oxide units and terminal hydroxyl groups. Its discrete chain length makes it a practical hydrophilic building block for constructing spacers and linkers in organic synthesis and related research fields.

Aure Chemical serves as a reliable sourcing partner for this specialty PEG derivative, supporting international customers with consistent material quality and complete documentation for research, process development, and fine chemical applications.

Basic Information

CAS No.	5117-19-1
EC No.	225-856-4
Linear Formula	HO(CH2CH2O)8H
Molecular Weight	370.44 g/mol
Appearance	White or colorless to light yellow powder to lump to clear liquid
Melting Point	22 °C (lit.)
Boiling point	175 °C at 0.01 Torr (lit.)
Density	1.13 g/mL (lit.)
Solubility	Soluble in water and polar organic solvents
Storage Conditions	Keep in a tightly closed container in a cool, dry and well-ventilated place. Protect from moisture.
Chemical Structure

Key Applications

• PEG linker intermediate: Octaethylene glycol provides a precise eight-unit hydrophilic chain suitable for building defined molecular linkers and spacers in bioconjugation and surface modification research.

• Molecular linker intermediate: The symmetric diol structure acts as a versatile starting material for preparing heterobifunctional PEG derivatives used in advanced organic synthesis and functional molecule construction.

• Fine chemical intermediate: It is applied in the synthesis of specialty polyether compounds and advanced intermediates for pharmaceutical and process chemistry projects.

• Bioconjugation research: Researchers employ this compound to introduce consistent hydrophilic segments into target molecules for studies involving conjugates and biomolecular probes.

• Process development: Octaethylene glycol supports route optimization and custom synthesis work where well-characterized PEG spacers with fixed chain length are required.

Why Work with Aure Chemical for Octaethylene Glycol

• Consistent product quality: Supplied with purity specifications in the 97%~99% range and reliable batch consistency suitable for fine chemical synthesis and research applications, supported by dedicated quality coordination.

• Flexible global supply: We arrange stable export logistics and accommodate quantities from laboratory samples through pilot scale to bulk orders for customers worldwide.

• SDS and COA support: Comprehensive documentation including Safety Data Sheets and Certificates of Analysis is available to assist with quality review, regulatory needs, and international procurement.

• Packaging and technical service: Guidance on suitable packaging options based on product form and order volume is provided, along with responsive technical communication for sourcing projects.

Packaging and Storage

• Packaging: Laboratory quantities are supplied in sealed glass or HDPE bottles, while bulk orders use appropriate drums or containers selected according to volume and product characteristics.

• Storage: Keep in a tightly closed container in a cool, dry and well-ventilated place. Protect from moisture and direct light to preserve product quality.

• Handling of opened containers: Reseal containers immediately after use and return to recommended storage conditions; minimize exposure to air or potential contaminants.

• Bulk supply: Customized packaging arrangements for pilot-scale and larger volumes are available to align with specific handling and shipping requirements.

Safety and Handling

• General handling: Perform handling operations in a well-ventilated area using standard practices appropriate for chemical reagents and fine chemical materials.

• Personal protection: Wear suitable protective gloves, safety goggles, and clothing to avoid direct contact with skin or eyes during handling.

• Documentation review: Consult the latest Safety Data Sheet (SDS) for detailed handling, storage, first aid, and disposal information before any use or transport.

• Compatibility: Avoid strong oxidizing agents and review the full product documentation for specific compatibility considerations with other materials.