CS2 Lewis Structure, Properties, Applications, and Synthesis (with 6 steps): Complete Amazing Guide.

The chemical substance carbon disulfide has the molecular formula CS2. It is a colorless, flammable liquid that smells both strong and sweet. It is a colorless liquid at normal temperatures, but at higher temperatures or under pressure, it can also exist as a gas. One carbon atom and two sulfur atoms, organized in a linear pattern, make up carbon disulfide. Although the bonding and structure are explained through the CS2 Lewis structure, This substance is extremely combustible and easily catches fire when there is air present. It is also poisonous and, if not handled carefully, can endanger both people’s and the environment’s health.

Carbon disulfide has several industrial uses despite its possible risks. It is principally employed in the manufacture of viscose rayon fibers, which find extensive application in the textile sector. As a solvent for oils and fats, as a fumigant for insect control, and in the production of rubber and other compounds, carbon disulfide is also used.

Properties of CS2:

To handle carbon disulfide safely and responsibly in industrial processes and other applications, one must be aware of its physical and chemical properties.

  1. Density: The density is approximately 1.263 g/cm3.
  2. Boiling Point: The substance’s boiling point is around 46.3 °C.
  3. Melting Point: It is around -111.6°C.
  4. Solubility: It is slightly soluble in water. Organic solvents, including benzene, alcohol, and ether, have a high solubility of carbon disulfide.
  5. Refractive Index: It causes refraction of light as its refractive index is about 1.627.
  6. Combustibility: Carbon disulfide burns with a blue flame and is very flammable, releasing carbon dioxide (CO2) and sulphur dioxide (SO2) as byproducts of combustion.
  7. Reactivity: It is a chemical that is reactive and can go through different chemical reactions.
  8. Hydrolysis: Carbon disulfide can be hydrolyzed to produce carbon dioxide and hydrogen sulfide in the presence of water and a catalyst.
  9. Environmental Impact: Carbon disulfide is a volatile organic molecule (VOC) that, when emitted into the atmosphere, can cause air pollution.

Polar or Non-polar molecule:

The polarity is determine by comparing the electronegativity of the atoms involved in the chemical bonding. In the case of carbon disulfide, sulfur, and carbon, they all have equal electronegativities, which means that there is little to no difference in how well they can attract electrons to form a covalent bond. So, the carbon-sulfur bond is non-polar because the difference in electronegativity is not particularly large.

Additionally, the carbon atom is in the middle of the linear carbon disulfide molecular structure, with the sulphur atoms on either side. As the dipoles cancelling each other out as a result of this symmetrical arrangement, the molecule as a whole is non-polar.


Due to its distinct physical and chemical characteristics, carbon disulfide is used in a wide range of industries.

  1. Production of Pesticides: Carbon disulfide is a crucial starting ingredient in the creation of a number of pesticides and insecticides, including fumigants based on carbon disulfide and metam sodium.
  2. Essential Oil Extraction: It serves as a solvent in the process of extracting essential oils from plants. The volatile oils are successfully extracted by carbon disulfide and employed in a variety of fields, such as aromatherapy, cosmetics, and fragrances.
  3. Varnish and Coating Industry: To dissolve resins and create coatings and varnishes with desired qualities, carbon disulfide is utilized as a solvent in the varnish and coating industry.
  4. Chemical Synthesis: Carbon disulfide is a common solvent used in chemical synthesis, especially for the creation of viscose rayon, a form of synthetic fiber used in clothes, textiles, and industrial uses.
  5. Electroplating: In the electroplating process, carbon disulfide is used to dissolve some metals and make it easier for metal to deposit on surfaces.
  6. Pharmaceuticals: Carbon disulfide is utilized in the pharmaceutical industry to synthesize a number of medicines and pharmaceutical intermediates.
  7. Synthesis of Chemical Intermediates: It is a reactant employed in the manufacture of a number of chemical intermediates that are used to create other chemicals and compounds.
  8. Mining: To separate valuable minerals from ore, the mining sector uses carbon disulfide as a flotation agent.
  9. Solvent in Insect Repellents: To increase the efficiency of some insect repellents, it is utilized as a solvent.
  10. Rubber Industry: During the manufacturing process, it is utilized as a solvent in the rubber industry to dissolve natural rubber and other elastomers. It enhances the physical qualities of rubber products and helps vulcanization of rubber.

CS2 Lewis structure:

The valence electrons in a molecule or ion are shown in a simplified manner by a Lewis structure, sometimes referred as lewis dot structure or electron dot structure. The atoms valance electrons in chemical compound are represented by dots in the Lewis structure. The American scientist Gilbert N. Lewis first presented it in 1916.

In chemical bonding, the atoms outermost valance shell electrons are called valance electrons. Each non-metal atom in a Lewis structure has dots around it that stand in for its valence electrons. One valence electron is represented by each dot.

Understanding the fundamental structure and bonding of molecules can be done with the help of Lewis structures. They aid in predicting molecular structure and chemical reactivity and give a visual picture of the electron distribution within a molecule.

Each carbon atom (C) in the CS2 Lewis structure is connected to two sulfur atoms (S) by double bonds. Each carbon atom contains four valence electrons, while each sulfur atom has six. The double bond between sulfur and carbon atoms in CS2 lewis structure, produce a linear shape molecule with an approximately 180-degree bond angle. On each sulfur atom, the lone pair of electrons are not involved in bonding.

It’s important to note that CS2 Lewis structures are simplified representations of molecules and do not show the three-dimensional shape or bond angles.

6 steps of CS2 Lewis structure:

To draw the CS2 Lewis structure, follow these steps:

Step 1: Total number of valence electrons:

Carbon belongs to group 4 and it has 4 valance electron. on the other hand sulfur has 6 valance electrons as it belongs to group 6 in the CS2 Lewis structure. The total number of valance electrons in CS2: 4 + 6 + 6 = 16.

Step 2: Determine the central metal atom:

In the CS2 Lewis structure, the carbon (C) atom is the central metal atom, as it can form the most bonds.

Step 3: Connect the atoms with dots:

Place the carbon atom in the center and the sulfur atoms on each side. Connect each sulfur atom to the carbon atom with an electron pair.

Step 4: Distribution of remaining valence electrons:

To complete the octet, place the remaining valance electrons on each atom as lone pair. Carbon should have 4 valence electrons (2 lone pairs), and each sulfur should have 6 valence electrons (3 lone pairs).

Step 5: Check if all atoms have an octet:

Since the carbon atom has four electrons, it is not stable. Shifting the electron pair from the outer sulfur atoms will allow the carbon atom to have eight electrons, which is necessary for stability. Carbon has 8 valence electrons (4 bonds and 2 lone pairs). Each sulfur has 8 valence electrons (4 bonds and 3 lone pairs).

Step 6: Formal charge:

The stability of lewis structure can be determined by formal charge.

Formal charge = Valence electrons (Bonding electrons/2 – Non-bonding electrons)

From this formula we can find out that carbon and sulfur has no formal charge. This means that the CS2 lewis structure is stable and it has zero formal charge.

Their is a two double bond between carbon and sulfur atom in CS2 lewis structure. While the sulfur have two lone pair of electrons in final structure. Total 16 valence electrons should be divided among the atoms in the structure.


Several processes can be used to synthesize carbon disulfide (CS2). The main techniques for synthesizing carbon disulfide are listed below. Each method has advantages and limits. The best approach to use relies on a number of variables, including the required production scale and the availability of reagents. 

Direct Synthesis:

This process produces carbon disulfide by directly reacting sulfurand elemental carbon, typically in the form of charcoal, the presence of a catalyst like copper or iron. The reaction occurs in a furnace at a high temperature.

2C + 2S -> CS2

Hydrogen Sulfide and Carbon Monoxide Reactions:

Another technique involves the reaction of hydrogen sulfide and carbon monoxide (CO) with a catalyst, such as zinc oxide. Carbon disulfide and water vapour are produced while the reaction continues at a high temperature.

H2S + 2CO -> CS2 + 2H2O

Thionation of Carbon Tetrachloride:

nother method for producing carbon disulfide involves heating up carbon tetrachloride (CCl4) and sulfurin the presence of a reducing agent like sodium.

CCl4 + 4S -> CS2 + 4Cl2


In conclusion, understanding carbon disulfide’s properties and applications is critical for assuring safe and responsible use in a variety of sectors. Carbon disulfide plays a significant part in modern industries. It is a fascinating substance that continues to be investigated in the areas of chemistry, materials science, and industrial applications.

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