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Carbon Disulfide Formula

Last updated date: 20th Jun 2024
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What is Carbon Disulfide?

The carbon disulfide chemical formula is CS2. Carbon disulfide is also spelt as carbon disulphide. It is a colourless volatile liquid, which is used frequently as a building block in organic chemistry. Being the industrial and chemical non-polar solvent, the formula of carbon disulfide carries various chemical properties, which we will discuss on this page.

Along with this, we will have a look at the molecular formula of carbon disulfide, the structure to understand the carbon disulphide formula.

Formula of Carbon Disulfide

The carbon disulfide formula comprises the following chemical properties:

Properties of Carbon Disulfide

Properties: Disulfide Chemical Formula 


Chemical formula of carbon disulfide


IUPAC ID for the chemical formula of carbon disulphide

Carbon Disulfide

Carbon disulfide molecular formula

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Structure: Carbon disulfide molecular formula

Bond Angle - 180°

Bond length - 155.26 pm (160 picometers)

Melting Point of the formula for carbon disulfide

− 111.61 °C 

− 168.90 °F

161.54 K

Boiling Point for the chemical formula of carbon disulphide

46.24 °C 

115.23 °F

319.39 K


Chloroform (pure)

Foul (commercial)


1.539 g/cm3 (−186°C)

1.2927 g/cm3 (0 °C)

1.266 g/cm3 (25 °C)

Solubility in water

2.58 g/L (0 °C)

2.39 g/L (10 °C)

2.17 g/L (20 °C)[

0.14 g/L (50 °C)

Solubility in liquids 

Soluble in alcohol, ether, benzene, oil, CHCl3, CCl4

Solubility in Formic Acid

4.66 g/100 g

Solubility in dimethyl sulfoxide

45 g/100 g (20.3 °C)[

Vapour pressure

48.1 kPa (25 °C)

82.4 kPa (40 °C)

Magnetic susceptibility (χ)

− 42.2·10−6 cm3/mol

Molar mass of the carbon disulfide molecular formula

76.13 g·mol−1

Refractive Index

1.627 at 20 °C


0.436 cP (0 °C)

0.363 cP (20 °C)

0.495 mPa·s at - 10°C

0.436 mPa·s at 0°C

0.380 mPa·s at 5°C

0.363 mPa·s at 20°C

Surface Tension

35.3 dyn/cm at 0°C 

32.3 dyn/cm at 20°C

Dielectric Constant (ε0)

2.641 at 20 °C

Carbon Disulfide Molecular Formula

The formula for carbon disulfide has the following molecular formula of carbon disulfide:

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Carbon Disulfide Chemical Formula

The chemical formula for carbon disulfide carries the following thermochemistry properties:

Thermochemistry Properties of Carbon Disulfide          

Formula of Carbon Disulfide Properties


Heat capacity (C)

75.73 J/(mol·K)

Std molar

entropy (So298)

151 J/(mol·K)

Standard or Std enthalpy of

formation (Δf H298)

88.7 kJ/mol

Gibbs free energy (Δf Go)

64.4 kJ/mol

Std enthalpy of

combustion (Δc H298)

1687.2 kJ/mol

Now, let’s have a look at the basic reaction for the carbon disulphide formula:

CS2 is a highly inflammable volatile liquid. Its combustion produces sulfur dioxide by reacting with atmospheric gas, i.e., oxygen. Therefore, according to the ideal stoichiometry, the following reaction undergoes:

CS2(l)    + 3 O2(g)    →   CO2(g) + 2 SO2(g)

Here, one mole of  CS2 reacts with three moles of O2  to produce CO2 and two moles of SO2.


CS2  is a highly reactive volatile liquid, which is formed as;

C   +   2S   →   CS2

Being a highly flammable gas, it must be stored in a refrigerator at lower temperatures.

FAQs on Carbon Disulfide Formula

1. Determine The Product Formed By the Chlorination of CS2.

Ans: Chlorination of CS helps in carbon tetrachloride formation, the following reaction undergoes:                

                      CS + 3 Cl2   →  CCl4  + S2Cl2

                                      (Carbon Tetrachloride)

The above reaction proceeds via the intermediacy of thiophosgene, CSCl2.

2. How Do You Prepare Carbon Disulphide?

Ans:  Following is the carbon disulfide preparation reaction:

At a lower temperature of 600 °C, a natural gas as the carbon source in the presence of silica gel or alumina catalysts the following reaction takes place:

2 CH4  + S8  →    2 CS2 + 4 H2S

                                                                            (Methane)                    (Hydrogen Sulfide)

3. What is Carbon Disulfide Used For?

Ans: Carbon disulfide is used in the following areas:

The fumigation of airtight storage warehouses, airtight flat storages, bins, grain elevators, railroad box cars, ship holds, barges, and cereal mills.

Along with its use in nursery stock, it is also used as an insecticide for the fumigation of grains.

Also, in fresh fruit conservation, and as a soil disinfectant against insects and nematodes.