Sokalan PM 15I is a modified polycarboxylate (salt). The quality of this product meets the technical requirements listed in the table below:

 

 

　　This product is miscible with water in any proportion (including seawater) and also soluble in mixtures of water and water-soluble solvents. It has low residual monomers and stable physical properties. The product is non-toxic and has passed KIWA-ATA and NSF (USA) certifications. It can disperse microcrystals or sediments of salts such as calcium carbonate, calcium phosphate, and calcium sulfate in water without precipitation, controlling scale formation in desalination units and keeping fouling on membranes in a free state, thereby achieving scale inhibition. When used in combination with organic phosphonates, organic phosphates, and polyphosphates, it exhibits good synergistic effects and can operate under alkaline and high-concentration conditions without scaling. The product has low acute toxicity, is non-irritating, and shows no sensitization tendency. According to EU chemical regulations, it is classified as a non-hazardous substance. It is not highly toxic to marine life, and the discharge of concentrated seawater after desalination does not pollute the environment.

 

　　This product is particularly effective in controlling the deposition of surface inorganic scales. It effectively inhibits the formation of scales caused by calcium sulfate, calcium carbonate, magnesium hydroxide, etc., which are the main sources of scaling in seawater distillation processes. It exhibits excellent scale inhibition and dispersion performance at the slightly higher temperatures encountered in MED and MSF processes. The produced water is potable (approved and certified for European drinking water treatment production).

　　Typically, the dosage of this product in thermal seawater desalination is 2.5–3.5 ppm. The exact dosage depends on the quality of the seawater and the temperature of seawater distillation.

　　The Huanghua Power Plant’s seawater desalination facility, with a capacity of 2×10,000 tons/day MED units, has been operating since June 2006 using Sokalan PM 15 I as a dispersant and scale inhibitor, with very good results.

 

　　This product is packaged in 250 kg plastic drums. The packaging containers are labeled with the product name, specifications, net weight, batch number, and manufacturer’s name.

 

　　This product should be stored sealed in a dry, cool, and well-ventilated place. The shelf life is 36 months. During transportation, handle with care, avoiding impact.