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Shelf-life/Retest：If stored longterm in original tightly closed containers, dry, protected from light and moisture and below 25°C, the shelf life then is at least three years.

Due to its surface activity(HLB value approx 4) IMWITOR 491 show the following functions: Non-ionic emulsifier, co-emulsifier, stabilizer, dispersing agent, solubilizer, lubricant, softener, consistency regulator, binding agent and retarding agent. Typical dosage:1-3%.