Muscat chemical is one of the leading Naphthenic Acid (NAs) distributors, manufacturers, exporters, and suppliers in Fujairah, Dubai, Sharjah, Abu Dhabi, Doha, Kuwait, Muscat Oman. We are supplied to various industrial markets including Household, Institutional Cleaning, Personal Care, and Industrial sectors including Oil fields, chemical, Animal feed additive, Food additive, Agrochemical, Fertilizer, pharmaceuticals, water treatment, Minerals, Lubricants, Marine Industry, Metal Working chemical industry, and Coatings markets.
Naphthenic acid (NAs) are a mixture of several cyclopentyls and cyclohexyl carboxylic acids with a molecular weights of 120 to well over 700 atomic mass units. The main fraction is carboxylic acids with a carbon backbone of 9 to 20 carbons. McKee et al. claim that “naphthenic acids (NAs) are primarily cycloaliphatic carboxylic acids with 10 to 16 carbons”, although acids containing up to 50 carbons have been identified in heavy petroleum. The term naphthenic acid has roots in the somewhat archaic term “naphthene” (cycloaliphatic but non-aromatic) used to classify hydrocarbons.
Today “naphthenic” acid is used in a more generic sense to refer to all of the carboxylic acids present in petroleum, whether cyclic, acyclic, or aromatic compounds and carboxylic acids containing heteroatoms such as N and S. Although commercial naphthenic acids often contain a majority of cycloaliphatic acids, multiple studies have shown they also contain straight chain and branched aliphatic acids and aromatic acids; some naphthenic acids contain >50% combined aliphatic and aromatic acids.
Naphthenic acid is removed from petroleum fractions not only to minimize corrosion but also to recover commercially useful products. The greatest current and historical usage of naphthenic acid is in metal naphthenates. Naphthenic acids are recovered from petroleum distillates by alkaline extraction and then regenerated via an acidic neutralization process and then distilled to remove impurities. Naphthenic acids sold commercially are categorized by acid number, impurity level, and color, and used to produce metal naphthenates and other derivatives such as esters and amides.
Naphthenates are the salts of naphthenic acids, analogous to the corresponding acetates, which are better defined structurally (because they crystallize readily). Such well-defined species however exhibit low solubility in hydrophobic media such as paints. They are generally assumed to have the formula M(naphthenate)2 or are basic oxides with the formula M3O(naphthenate)6. The naphthenates have industrial applications including synthetic detergents, lubricants, corrosion inhibitors, fuel, and lubricating oil additives, wood preservatives, insecticides, fungicides, acaricides, wetting agents, thickening agents of napalm, and oil drying agents used in painting and wood surface treatment. Industrially useful naphthenates include those of aluminium, magnesium, calcium, barium, cobalt, copper, lead, manganese, nickel, vanadium, and zinc. Illustrative is the use of cobalt naphthenate for the oxidation of tetrahydronaphthalene to the hydroperoxide.
Naphthenic acid usage
This product is mainly used to prepare naphthenates, its sodium salt is a cheap emulsifier, agricultural growth promoter, detergent in the textile industry; lead, manganese, cobalt, iron, calcium and other salts are printing inks and coatings. Desiccant; copper salt, mercury salt used as wood preservative and pesticide, fungicide; aluminum salt used in grease and napalm and flare. Its nickel, cobalt, and molybdenum salts can be used as organic synthesis catalysts and driers. Some salts can also be used as additives for special oils. High-carbon aliphatic esters of naphthenic acid are suitable as precision mechanical oils. Telephones, clocks, meters, etc. It can also be used to prepare synthetic detergents, insecticides, rubber accelerators, and solvents.
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