Question

How to store Polyether L-62? What is the shelf life?

Answer

2026-06-06 官方文档聚醚L-62

Polyether L-62 should be stored sealed in a cool, dry, and well-ventilated place, away from fire and heat sources; the shelf life is not explicitly marked in the database, but under recommended storage conditions, it can typically be stored stably for 2 years.

Detailed Instructions

Polyether L-62 (Poloxamer 182) is a non-ionic surfactant, appearing as a colorless to light yellow transparent liquid, and is chemically stable under normal storage conditions. Proper storage relies on moisture prevention, fire prevention, and high temperature avoidance. This product has certain hygroscopicity; contact with moisture in the air may cause product quality deterioration, so container sealing is crucial.

Regarding shelf life, there is no specific marking for this parameter in the Guoli Chemical product database. According to common industry practices in the chemical sector and the chemical stability of this product, unopened original packaging of Polyether L-62 can typically be stored stably for 2 years under strict adherence to recommended storage conditions. Users are advised to follow the "First In, First Out" inventory management principle and check for any abnormal changes in product appearance (such as turbidity, stratification, or significant color deepening) before use.

Storage Condition Requirements

Storage Element	Specific Requirement
Ambient Temperature	Cool environment, avoid high temperatures (recommended storage temperature below 40°C)
Ambient Humidity	Dry, prevent moisture (product is hygroscopic)
Ventilation Condition	Good ventilation to avoid accumulation of vapor or mist
Lighting	Avoid direct sunlight
Fire Source Management	Keep away from ignition sources and heat (flash point > 150°C, combustible when exposed to open flame or high heat)
Container Sealing	Keep container sealed; reseal promptly after opening
Prohibited Mixed Storage	Should be stored separately from oxidizing agents, acids, etc., and avoid mixing
Packaging Specifications	50kg plastic drum \/ 200kg plastic drum \/ IBC tote
Storage Area Configuration	Storage area should be equipped with spill emergency response equipment and suitable containment materials

Usage Recommendations

Opened Polyether L-62 should be used up as soon as possible. If it cannot be used up in one go, immediately reseal the container after each use to prevent moisture absorption and contamination. Use dry and clean tools when withdrawing material. If the product shows significant color deepening, turbidity, or stratification, it is recommended to stop use and contact the Guoli Chemical technical department to confirm quality.

Notes

The product pour point is approximately -20°C. Solidification or thickening may occur in low-temperature environments; this is a normal physical change. Place the container in a warm environment (recommended not exceeding 40°C) to slowly return to temperature and stir evenly before use.
Although the flash point is relatively high (>150°C), it is still a flammable liquid; smoking and open flames are strictly prohibited in the storage area.
The product has long-lasting harmful effects on aquatic organisms (H412). In case of leakage, do not discharge into sewers or water bodies; absorb with inert materials such as sand, vermiculite, etc., collect in sealed containers, and dispose of through qualified waste treatment agencies.
The above shelf life information is an industry general reference value and not a contractual basis for product quality guarantee period. The specific quality guarantee period shall be based on the batch test report or the warranty period issued by the manufacturer.

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