Methods for detecting genuine and counterfeit crystallized salt
Distinguishing genuine and counterfeit crystallized salt is one of the important issues in the field of quality control of minerals and the food industry.
Given that crystallized salt is widely used not only in food but also in the pharmaceutical, chemical and cosmetic industries, identifying its main type is of great importance.
Genuine crystallized salt is usually obtained from the natural evaporation of salt water or saturated sodium chloride solutions under controlled conditions and has a regular crystal structure and high chemical purity.
In contrast, counterfeit or impure salts are usually produced by adding fillers, chemical bleaches or regenerated crystals under artificial conditions, whose molecular structure and ionic composition are different from natural salt.
Scientific methods for detecting this difference include three main categories:
Physical methods, which include examining crystal shape, color, transparency, dissolution and reaction to heat.
Classical chemical methods such as iodine test, pH measurement, and determination of metal impurities.
Advanced analytical and technological methods such as infrared spectroscopy (FTIR), Raman, chromatography, and isotopic data analysis.
In recent years, the combination of analytical technologies with artificial intelligence has made it possible to identify subtle patterns in spectral and physical data, so that adulteration can be detected even at levels below one percent.
The use of machine learning models to classify salt samples is a major breakthrough in quality control and market monitoring.
As a result, scientific and accurate examination of crystallized salt using multifaceted methods not only ensures consumer health but also prevents industrial and commercial fraud.
The importance of identifying crystallized salt
The importance of identifying crystallized salt is not limited to its edible aspect, but is directly related to human health, the quality of industrial products and even environmental considerations.
In many countries, strict standards are set for the production and supply of salt, because impurities and additive compounds can have harmful effects on public health.
For example, the presence of heavy metal ions such as lead, cadmium or mercury in non-original salts can cause chronic poisoning, damage to the nervous system and kidneys.
From an industrial perspective, impure or reproduced salts cause disruption in production processes, for example, in the chemical and food industries, the presence of insoluble compounds causes corrosion of equipment or discoloration of the final products.
Also, in the pharmaceutical industry, low salt purity can lead to unwanted reactions in pharmaceutical formulations.
From an economic perspective, adulteration of crystal salt is also known as a form of raw material fraud and causes huge losses to producers and consumers.
According to recent studies in the Journal of Food Composition and Analysis, more than 8% of samples examined in regional markets had signs of adulteration or unauthorized impurities.
Finally, accurate identification of genuine crystal salt from counterfeit is essential not only from a scientific perspective but also from a public health policy perspective.
Performing physical, chemical, and spectroscopic tests in production lines and market control can prevent widespread damage.
For this reason, the issue of crystal salt detection should be among the top priorities in regulatory systems and industrial research.
What is original crystal salt?
Original crystal salt or natural salt is the result of the natural crystallization process of sodium chloride from seawater or saturated salt solutions.
This process is usually carried out in evaporation ponds or through controlled thermal evaporation, where water molecules gradually evaporate and the sodium and chlorine ions are arranged together in stable crystal lattices.
The result of this process is clear, regular crystals with uniform hardness and density.
In the chemical composition of the original crystallized salt, it consists of more than 98% pure NaCl and has a very low moisture content and mineral impurities.
Original salt crystals are usually cubic in shape, their surface is free of sticky particles or excess powder, and they dissolve quickly and evenly when in contact with water.
In contrast, industrial or counterfeit salts may be produced by recycling used salts, mixing with bleaching powders or non-edible minerals.
These types of salts often have an opaque color, a rough texture, and an unnatural taste.
In microscopic examinations, differences in crystallographic angle and light refraction can also be observed between the original and counterfeit samples.
In addition to high purity, genuine crystallization salt has regular crystal energy and stable physicochemical properties, which make it ideal for sensitive applications such as pharmaceuticals, food industries, and cosmetic products.
These features make it easy to distinguish it from fake samples through physical tests, spectroscopy, and crystal structure analysis.
Types of common adulteration and impurities in salt
Salt, as one of the most widely consumed minerals in human nutrition, is subject to a variety of natural and human adulteration and impurities.
Adulteration in salt is usually carried out with the aim of reducing production costs or increasing product weight and can threaten consumer health.
One of the most common types of adulteration is the addition of non-edible fillers such as gypsum (calcium sulfate), limestone powder (calcium carbonate), and even soil, which increase volume and weight.
In some cases, manufacturers use unsanitary industrial salts for edible purposes.
These types of salts may contain heavy metals such as lead, mercury, and cadmium, which have long-term damaging effects on the kidneys and nervous system.
On the other hand, natural impurities can also be added during the extraction process or
