Question

How should XPO-4 (glycerol polyoxyethylene ether oleate), a high-temperature leveling agent, be stored? What is the shelf life?

XPO-4 should be stored sealed in a cool, dry, and well-ventilated place at 5°C to 40°C, away from incompatible substances; there is no official shelf life data, but it is generally recommended to use it within 2 years.

Detailed Description

XPO-4 (glycerol polyoxyethylene ether oleate) is a nonionic surfactant, appearing as a light yellow to yellow transparent viscous liquid at room temperature. Proper storage is crucial for maintaining stable product performance and extending its service life. This product is non-flammable, with a flash point above 150°C, and is chemically stable under normal storage conditions.

Regarding shelf life, there is no official data for XPO-4 in the Guoli Chemical product database. According to the general industry experience for nonionic surfactant products, under strict adherence to storage conditions, it is generally recommended to use it within 2 years to ensure optimal performance. It is advised to follow the "first in, first out" inventory management principle and periodically check the product's appearance for any abnormal changes such as stratification, increased turbidity, or off-odors.

Storage Condition Requirements

Storage ElementSpecific Requirement
Temperature RangeRecommended 5°C to 40°C; avoid freezing or prolonged exposure to high temperatures
Container RequirementsKeep sealed; use corrosion-resistant, leak-proof containers; set up dikes to contain spills
Environmental ConditionsCool, dry, and well-ventilated warehouse
Segregation RequirementsKeep away from food, beverages, and animal feed
Incompatible SubstancesStore separately from strong oxidizers, strong acids, and strong bases
Fire Prevention MeasuresThis product is a non-flammable liquid, but in case of fire, water spray, alcohol-resistant foam, dry powder, or carbon dioxide can be used for extinguishing

Application Recommendations

After each use of XPO-4, immediately close the container tightly to minimize prolonged exposure to air, preventing moisture absorption or foreign matter contamination. If the product becomes more viscous or turbid at low temperatures, this is a normal physical change for nonionic surfactants. Allow the product to naturally return to a transparent state at room temperature (20°C–30°C) before use; do not apply direct heat. It is recommended to gently stir the product to ensure uniformity before use.

Precautions

  • Wear safety goggles or face shield during operation to avoid contact with eyes (GHS classification: Serious eye damage/eye irritation Category 2, H319).
  • It is recommended to wear nitrile or neoprene protective gloves; thoroughly wash hands and exposed skin after operation.
  • Do not discharge untreated waste or residues into soil, waterways, or public drainage systems (harmful to aquatic life, H402).
  • In case of leakage, use inert absorbent materials such as sand or vermiculite to contain and collect; avoid flushing into sewers.
  • The product has a biodegradation rate >70% (OECD 301B method), classified as readily biodegradable, but waste must still be disposed of according to regulations.