Description

Methoxy Peg-16 is a monofunctional, methyl-capped polyethylene glycol derivative widely used as a versatile chemical intermediate and functional ingredient. Its primary value lies in its ability to impart hydrophilicity, solubility, and steric stabilization to formulations, making it a critical component for performance enhancement. This product is essential for manufacturers in the pharmaceutical, personal care, and specialty chemical industries seeking reliable, high-purity raw materials for advanced applications.

Application

• Pharmaceutical Excipient: Used as a solubilizer, stabilizer, and carrier in drug delivery systems, including parenteral formulations and topical creams.
• Polymer & Resin Modification: Acts as a reactive macromonomer or plasticizer to modify the flexibility, hydrophilicity, and processing characteristics of polymers.
• Personal Care & Cosmetics: Functions as a humectant, emollient, and viscosity modifier in skin care products, lotions, and hair care formulations.
• Chemical Synthesis Intermediate: Serves as a starting material or linker for the synthesis of more complex PEGylated compounds, surfactants, and conjugates.
• Lubricants & Functional Fluids: Employed as a base or additive in specialty lubricants and industrial fluids requiring water solubility and low toxicity.
• Bioconjugation & Protein Modification: Utilized for PEGylation processes to improve the stability, solubility, and circulation time of therapeutic proteins and peptides.

Basic Information

Product Name	Methoxy Peg-16
CAS No.	95507-80-5
Molecular Formula	C33H68O17
Molecular Weight	712.9 g/mol (approx.)
Synonyms	Methoxy PEG-16; MPEG-16; Poly(ethylene glycol) methyl ether (n~16); α-Methyl-ω-hydroxypoly(oxy-1,2-ethanediyl); PEG-16 Methyl Ether; 2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-(2-Methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanol; Monomethoxy Polyethylene Glycol 750
EINECS	Contact for details

Quality Control

Our Methoxy Peg-16 is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and functionality. A Certificate of Analysis (COA) documenting key parameters such as assay, polydispersity, and water content is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent moisture absorption. For long-term storage, consider using an inert atmosphere to minimize potential oxidation.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Average Molecular Weight (GPC)	700 - 750 g/mol
Polydispersity Index (PDI)	≤ 1.10
Water Content (KF)	≤ 1.0%
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.