Polyethylene glycol 4000 (PEG 4000)

Product Overview & Quality

• Product Name: Polyethylene glycol 4000 (PEG 4000)
• Brand: Kemaus (Product Code: KA-1683)
• Grade: Laboratory Grade (Lab Grade). Manufactured under strict Kemaus quality control guidelines to ensure a highly consistent average molecular weight distribution (typically between 3600 to 4400). Features premium physical uniformity and low trace contamination, making it highly suitable for biochemistry research, sample preparations, and industrial chemical formulations.
• Physical Properties: Odorless, white waxy flakes, white granular powder, or fine white powder.
• Solubility: Highly soluble in water (forming viscous solutions depending on concentrations); readily soluble in chloroform; insoluble in ether and aliphatic hydrocarbons.
• Key Use: Widely utilized as an effective precipitating agent in biochemical and molecular biology protocols to isolate proteins, nucleic acids, and viral particles from aqueous mixtures. Commonly applied in biotechnology research to induce cell fusion and facilitate genetic transformations. Also functions as a premium water-soluble binder, lubricant, and viscosity modifier in pharmaceutical and cosmetic R&D, as well as a specialized stationary phase component in chromatography.

Safety & Hazards

• Classification: Not classified as a hazardous substance according to GHS regulations. It features an exceptional non-toxic and biocompatible chemical profile. Acts as a mild physical and mechanical tissue irritant.
• Health Risks: Direct eye contact with large amounts of fine dust or flakes may cause minor, temporary mechanical irritation, watering, or short-term redness. Inhalation of airborne particles may trigger minor coughing or sneezing.
• First Aid Measures: Flush eyes immediately with plenty of flowing water. Wash affected skin with soap and water. Seek medical advice if irritation develops or persists.

Handling & Storage

• Storage: Hygroscopic material. It can absorb ambient moisture from the surrounding air, which may cause the flakes to cake or clump over time. Must be stored in the original, tightly sealed Kemaus container. Keep in a cool, strictly dry, and well-ventilated space at stable room temperature (below 30 degrees Celsius). Protect from direct sunlight.
• Precautions: Wear standard personal protective equipment (PPE), including laboratory gloves, safety glasses, and a particulate dust mask. Secure the container cap tightly immediately after each use to preserve the dry integrity of the reagent.