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NINGBO INNO PHARMCHEM CO.,LTD. offers a comprehensive range of Polyethylene Glycol (PEG) products, each tailored to specific industry needs. Navigating the different grades of PEG can be complex, but understanding their properties is key to selecting the optimal product for your application. The primary distinctions among PEG grades lie in their molecular weight and purity, which significantly influence their physical state and functional behavior.
The numbers following 'PEG' on a product label, such as PEG 300, PEG 400, PEG 1000, or PEG 8000, refer to the average molecular weight of the polymer chains. Lower molecular weight PEGs, typically those below 1000, are liquids at room temperature. PEG 400, for example, is a widely used liquid PEG known for its excellent solvency and humectant properties, making it popular in pharmaceutical and cosmetic formulations. Its ability to dissolve APIs and retain moisture is critical for product efficacy and feel.
As the molecular weight increases, PEG transitions from a viscous liquid to a semi-solid and eventually to a waxy solid. PEGs with higher molecular weights, like PEG 8000, are solids and are often used in applications requiring a more structural role, such as tablet binding agents in pharmaceuticals or as components in solid cosmetic formulations. The specific polyethylene glycol grades chosen depend heavily on the desired end-product characteristics.
Purity is another critical factor. Pharmaceutical grade PEG, often designated USP or EP, meets stringent quality and safety standards set by regulatory bodies like the United States Pharmacopeia (USP) and European Pharmacopoeia (EP). This grade is essential for medications, food additives, and high-end cosmetic products where safety and minimal contaminants are paramount. Industrial grades, while still reliable, may have less stringent purity requirements and are typically used in applications like antifreeze or as heat transfer fluids where direct human contact is less of a concern.
Understanding what is polyethylene glycol in terms of its grade allows industries to leverage its properties effectively. For example, the polyethylene glycol uses in pharmaceuticals demand the highest purity, whereas its application as an industrial solvent might allow for a technical grade. NINGBO INNO PHARMCHEM CO.,LTD. provides detailed specifications for each PEG grade, ensuring clients can make informed decisions. Selecting the correct PEG grade is crucial for achieving desired product performance, safety, and regulatory compliance.
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1. 20 years of R&D, manufacturing and sales experience, serving customers in 60 countries and regions around the world;
2. Own R&D laboratory, pilot platform and large-scale production workshop, which can meet the audit requirements of global customers;
3. We can satisfy customers' perfect transition from small scale lab requirements (gram level) to commercialization requirements (hundred tons level).
A: We don't have Minimum Order Quantity, exact quantity should be provided before quotation for us to calculate the exact cost.
A: We don't provide free samples due to lots of request and expensive international courier's cost, we can deduct the sample charge after commercial order placed.
A: Our payment terms: Small or sample order: T/T IN ADVANCE. Commercial order: First order should be by T/T IN ADVANCE or L/C at sight, and following orders T/T 30~90days is acceptable subject to approval of credit application.
