How should Polyether L-63 be stored? What is its shelf life?

Polyether L-63 should be stored in a cool, dry, and well-ventilated environment. The recommended temperature is 5–40°C. Keep the container tightly sealed and use within the specified shelf life under the recommended storage conditions.

Detailed Description

Polyether L-63 (CAS No.: 9003-11-6) is a non-ionic polyether polyol with stable chemical properties. It is a non-hazardous substance and a non-flammable liquid (closed cup flash point >200°C), with relatively relaxed storage requirements. However, basic chemical storage practices should still be followed to ensure product quality is not compromised. The product is readily biodegradable and does not produce harmful decomposition products under normal storage conditions, but it should be kept away from heat sources, sparks, open flames, and incompatible substances (such as strong oxidizers and strong acids).

The choice of storage container is also important. Containers made of carbon steel, stainless steel, or specific plastics are recommended. Opened containers should be properly resealed to prevent moisture or contamination. Do not store this product together with food, feed, or pharmaceuticals. Keep the storage area clean to prevent spill accumulation. After long-term storage, it is recommended to perform quality inspection before use to ensure product performance meets requirements.

Storage Conditions Overview

Shelf Life Description

According to the safety data sheet provided by Guoli Chemical, the shelf life of Polyether L-63 is described as: "Use within the specified shelf life under the recommended storage conditions. After long-term storage, it is recommended to test before use." Currently, no exact shelf life duration (e.g., 12 or 24 months) is given in the database. For the specific shelf life, please refer to the product specification sheet or the inspection report upon delivery. Generally, polyether polyol products stored sealed, away from light, and at room temperature have a shelf life of 12 months, but the final determination should be based on the product label or contract agreement.

Precautions

• Wear chemical protective gloves (e.g., nitrile or neoprene gloves) and safety goggles during handling to avoid contact with eyes and skin.
• Keep the container tightly sealed and reseal promptly after opening to prevent product from absorbing moisture and deteriorating.
• Avoid freezing — Polyether L-63 is a viscous liquid; low temperatures may cause a significant increase in viscosity, affecting usability.
• Inventory management should follow the "first in, first out" principle.
• If there are questions or if confirmation of the shelf life for a specific batch is needed, please contact Guoli Chemical technical support or refer to the product COA (Certificate of Analysis).