Octylphenol-10 can be used as a leveling agent and dispersing agent in printing and dyeing processes, a degreasing agent for leather and wool, an emulsifier for crude oil and fuel oil, a penetrant for oil extraction acidification, an emulsifier for styrene-butadiene latex and emulsion polymerization, a lubricant and emulsifier for glass fiber textiles, and an emulsifier, detergent, penetrant, and wetting agent in cosmetics.