CAS 9004-74-4 Methoxypolyethylene Glycol MPEG-350 MPEG-500 MPEG-750 m-PEG-OH (MW 2000) CAS NO.9004-74-4

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CAS 9004-74-4 Methoxypolyethylene Glycol MPEG-350 MPEG-500 MPEG-750 m-PEG-OH (MW 2000)

 

Product Description

Methoxypolyethylene Glycol (MPEG) Description

Methoxypolyethylene Glycol (MPEG) is a chemical compound derived from polyethylene glycol (PEG) with a methoxy group at one end of the polymer chain. It is a nonionic, water-soluble polymer with excellent biocompatibility, low toxicity, and versatility due to its chemical structure. MPEG is widely used in various industries, including pharmaceuticals, cosmetics, and industrial applications, as a thickening agent, dispersant, or surfactant.

 

Technical Data Table

Property	Description
Chemical Formula	CH3O-(CH2CH2O)n-H
Molecular Weight (Mw)	350 to 20,000 Da
Appearance	White to off-white waxy solid or viscous liquid
Solubility	Soluble in water, ethanol, methanol, and some organic solvents
Melting Point	50–80°C (varies depending on molecular weight)
Boiling Point	Decomposes before boiling
pH (1% solution)	Neutral to slightly acidic (5.0–7.5)
Viscosity	Increases with molecular weight
Density	~1.1 g/cm³
Polydispersity Index (PDI)	Typically <1.2
Shelf Life	2–3 years under proper storage conditions

 

Key Features

1. Water Solubility: Highly soluble in water and many organic solvents.
2. Biocompatibility: Low toxicity and non-immunogenic, making it suitable for pharmaceutical and cosmetic applications.
3. Thermal Stability: Stable under a wide temperature range.
4. Chemical Reactivity: The terminal methoxy group can be modified for functionalization.
5. Nonionic Nature: Compatible with ionic and nonionic systems.
6. Film-Forming Ability: Useful in coating and encapsulation applications.
7. Lubrication Properties: Offers smoothness and reduces friction in formulations.

 

Applications

1. Pharmaceuticals

• Drug Delivery: Used in the formulation of controlled-release drugs and PEGylation of biopharmaceuticals to improve solubility and stability.
• Hydrogels: As a component in hydrogel-based drug delivery systems.

2. Cosmetics and Personal Care

• Moisturizers and Emollients: Acts as a humectant and skin-conditioning agent.
• Surfactant: Enhances the stability and texture of formulations (e.g., creams, lotions).

3. Industrial Applications

• Polymer Additive: Used as a plasticizer, lubricant, or dispersant in polymer processing.
• Textiles: Acts as an anti-static agent and lubricant for fibers.
• Adhesives and Coatings: Improves adhesion, flexibility, and durability of coatings.

4. Food Industry

• Food Additive: Acts as a stabilizer, thickener, or emulsifier in food products.

5. Agriculture

• Fertilizers and Pesticides: Used as a dispersant and solubilizer for active ingredients.

Packaging	1kg-15kg packing	2 PE bag inside + 1 foil bag outside in carton
	25kg-50kg packing	2 PE bag inside + 1 foil bag outside in drum
	Other packing	Customized packing
Drum Size	D38cm*H60cm or customized, 25 kg/ drum
Shipping	1-50kg	International Express	Fast and convenient	Door to Door
	50-500kg	Air Transportation	Fast and cheap	To Air Port
	Above 500kg	Sea Transportation	Cheap and convenient	To Port

 

 

 

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Re-packing, drum filling, bagging

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