Water Absorption Properties of Diethylene Glycol in Polymer Manufacturing, recognized by its CAS number, plays a crucial role in the fine chemical and polymer sectors. This compound is defined by a particular molecular formula and molecular weight, with its IUPAC name and InChIKey ensuring clear, unambiguous identification for procurement and regulatory purposes. Diethylene glycol is primarily classified as a versatile chemical intermediate and is widely utilized in numerous industrial and formulation settings.
In polymer manufacturing, an appreciation of the physical and chemical specifications of diethylene glycol is essential for effective processing and quality assurance. These properties, such as density, melting point, and flash point, decisively influence how the compound interacts within polymer matrices and during the synthesis process. Its capacity for water absorption makes diethylene glycol especially valuable where control over moisture migration and retention is necessary, which can impact everything from polymer flexibility to end-use durability.
The regulatory and compliance landscape for diethylene glycol is structured by detailed standards. Its status under European REACH registration, complete with the relevant article number and tonnage band, assures end-users of compliance across the EU chemical supply chain. Similarly, the compound’s listing on the United States TSCA inventory, referencing the specific section, facilitates North American manufacturers' regulatory workflows. Where relevant, ICH guidelines, cited with full code and most current revision, outline applicable impurity limits for pharmaceutical environments. The Global Harmonized System (GHS) hazard classification details the required H-phrases and signal word, ensuring safe handling and risk communication. Pharmacopeial standards provide further quality benchmarks, while U.S. OSHA PEL and NIOSH REL values, if available, specify occupational exposure considerations.
Given its classification, diethylene glycol finds broad application as an intermediate in polymer industries, especially where its water absorption profile enhances product performance. It is instrumental in specific syntheses, including those involving polyesters, plasticizers, and polyurethanes. In cases where it is employed within pharmaceutical contexts, it often facilitates drug synthesis by modulating solvent properties or acting as a reaction medium. Notably, diethylene glycol's broad functionality should not be equated with therapeutic activity but rather as a valuable processing and formulation tool.
When it comes to packaging and storage, the industry standard typically involves containment in 25 kg or 200 kg drums, as well as intermediate bulk containers (IBCs) for larger-scale operations. In line with GHS stability data, storage should occur in tightly sealed vessels within cool, dry environments away from sources of ignition or reactive chemicals. For chemicals in this class, a typical shelf life is between one and two years under suitable conditions, with quality best maintained by minimizing moisture ingress and exposure to extreme temperature fluctuations.
For further detailed information and official references, readers are encouraged to consult PubChem, the NIST Chemistry WebBook, the European Chemicals Agency (ECHA), and the EPA TSCA Inventory. These sources provide comprehensive data and updates on chemical properties, regulatory requirements, and safety information: PubChem at https://pubchem.ncbi.nlm.nih.gov/compound/, NIST at https://webbook.nist.gov/cgi/cbook.cgi?Name=, ECHA at the appropriate ECHA webpage, and the EPA TSCA Inventory at https://www.epa.gov/tsca-inventory.
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