How to store emulsifier A-110, oleic acid polyoxyethylene ester, OEO-110? What is the shelf life?

Emulsifier A-110 should be stored in a cool, dry, sealed and light-proof environment at 5°C~35°C; regarding shelf life, there is no official shelf life data in the product database of Guoli Chemical, but nonionic surfactants can usually be stored stably for 12~24 months under recommended storage conditions.

Detailed Description

Emulsifier A-110 (oleic acid polyoxyethylene ester, OEO-110) is a nonionic surfactant. Its molecular structure contains ester bonds and unsaturated double bonds (iodine value 80-95 gI₂/100g). During storage, two main risk factors need to be prevented: hydrolysis and oxidation. Strictly following the recommended storage conditions can maximize the product's emulsifying power, dispersibility, and overall functional activity.

The product is a pale yellow to yellow transparent oily liquid at room temperature (freezing point approx. -5°C) and is slightly hygroscopic. The container should always be kept sealed. If exposed to humid air or high temperatures for a long time, the product may absorb moisture or oxidize, leading to an increase in acid value and deepening of color, thereby affecting application performance. It is recommended to follow the "first in, first out" principle and regularly check the appearance and pH value (normal range for 1% aqueous solution is 5.0~9.0) of the inventory product.

Although the product database does not list a specific shelf life, based on industry practices for similar oleate nonionic surfactants, under sealed original packaging and cool, dry conditions at 5°C~35°C, the product can usually be stored stably for 12~24 months from the date of production. After this period, it is recommended to recheck key indicators (such as acid value ≤2.0 mgKOH/g, pH value, emulsifying power) before continued use if qualified.

Storage Condition Parameters

Data source: Product database of Hai'an Guoli Chemical Co., Ltd. · Emulsifier A-110 Technical Parameters

Application Recommendations

• Sampling Operation: Immediately seal the drum lid after each material withdrawal to reduce contact time with air. Use dedicated sampling tools to avoid cross-contamination.
• Winter Protection: When ambient temperature is below 5°C, the product may become turbid or increase in viscosity. Before use, place the product in a warm room to naturally return to above 15°C and stir evenly to restore; performance is not affected.
• Repackaging Management: If repackaging into small containers, the containers should be clean, dry, and sealed, and labeled with the product name and repackaging date.
• Quality Monitoring: During long-term storage, it is recommended to sample and test acid value, pH value, and appearance every 6 months to ensure the product remains effective.

Precautions

• The product is slightly hygroscopic; the relative humidity of the storage environment should ideally be controlled below 60%.
• Although the flash point is >200°C, it should still be kept away from open flames and high-temperature heat sources.
• This product is not classified as dangerous goods; transportation and storage conditions are lenient, but the container must be sealed to prevent leakage.
• Waste disposal must comply with local and national regulations; do not pour directly into sewers or the environment.