Composition of biodegradable surfactants for separating impurities in a hydrocarbon

A procedure for producing the composition of biodegradable surfactants, comprising sodium hydroxide 1N, potassium chloride, sulphonic acid, dodecanoic acid, nonylphenol, terpene-1 and water, preferably hard water, the procedure comprising following steps:

• in a clean and dry mixer add an amount of hard water less than 50% v/v in respect of the total volume of the compound of the invention and add
• 2.5-5.5% v/v of sodium hydroxide 1N and 2-4% v/v of potassium chloride;
• add 5-15% v/v of sulphonic acid, 3-6% v/v of dodecanoic acid, 3-8% v/v of nonylphenol of 4-10 mols, and shake the mix until it is homogeneous;
• once homogeneity is achieved complete the total volume to 100% v/v with hard water, mixing continuously;
• shut the system off and let stand for 24 hours;
• after the 24-hour standing period extract 60-80% v/v of the solution obtained in step d) and mix it with 20-40% v/v of terpene for 30 minutes in amounts less than 200 liters until a white homogeneous mixture is obtained;
• and
• let stand the product of step e) for at least 6 hours and then apply it following the safety procedures suggested for its use.