Description

Poly[Oxy(Methyl-1,2-Ethanediyl)], α-Hydro-ω-Hydroxy-, Sodium Salt is the IUPAC name for a high-purity, water-soluble polymer widely recognized as a polyethylene glycol (PEG) sodium salt. This compound is valued for its role as a versatile chemical intermediate and functional excipient, providing excellent solubility, low toxicity, and tunable properties. It is essential for manufacturers in the pharmaceutical, cosmetic, and specialty chemical industries seeking reliable, high-quality raw materials for formulation and synthesis.

Application

• Pharmaceutical Excipient: Used as a solubilizer, binder, and coating agent in tablet and capsule formulations.
• Cosmetic & Personal Care: Functions as a humectant, emulsifier, and viscosity modifier in creams, lotions, and shampoos.
• Chemical Synthesis: Serves as a starting material or phase-transfer catalyst for producing specialty polymers and surfactants.
• Bioconjugation: Employed in PEGylation processes to modify proteins and peptides, enhancing their stability and circulation time.
• Industrial Applications: Acts as a dispersant, lubricant, and processing aid in various manufacturing processes.
• Research & Development: Utilized in laboratory settings for biochemical studies and material science applications.

Basic Information

Product Name	Poly[Oxy(Methyl-1,2-Ethanediyl)], α-Hydro-ω-Hydroxy-, Sodium Salt
CAS No.	37297-94-2
Molecular Formula	C2n+2H4n+6Na2On+2 (n varies by molecular weight)
Molecular Weight	Variable (Contact for details on specific grade)
Synonyms	Polyethylene glycol sodium salt; PEG sodium salt; α-Hydro-ω-hydroxy-poly(oxy-1,2-ethanediyl) sodium salt; Poly(ethylene oxide) sodium salt; Polyoxyethylene sodium salt; Sodium PEG; Macrogol sodium salt; HO(CH2CH2O)nH, sodium salt
EINECS	Contact for details

Quality Control

Our Poly[Oxy(Methyl-1,2-Ethanediyl)], α-Hydro-ω-Hydroxy-, Sodium Salt is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters such as assay, molecular weight distribution, and residual solvents are available upon request. We can support compliance with pharmaceutical (USP/EP), cosmetic, and industrial grade requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white powder or waxy solid
Identification (IR)	Conforms
Assay (as Sodium Salt)	≥ 95.0%
pH (Aqueous Solution)	5.0 - 9.0
Loss on Drying	≤ 5.0%
Residue on Ignition (as Sulfate)	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm

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