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Carbazole price index

This post is a summary of the Carbazole price developments since 2017. The price developments are expressed as a price index in US$ prices converted at current FX rates, which are the FX rates applicable at the time the price was valid. Carbazole price index developments are calculated from multiple separate sources of data to ensure statistical accuracy.


Further information on the Carbazole price index


What is Carbazole

Carbazole is a chemical compound with the molecular formula C12H9N. It is an aromatic heterocyclic compound that belongs to the class of compounds known as indoles. Carbazole is a white to pale yellow solid that is insoluble in water but soluble in organic solvents. It has a strong, unpleasant odor and is highly flammable.

Carbazole is used as a starting material in the synthesis of a variety of chemicals and pharmaceuticals. It is also used as a dye, a corrosion inhibitor, and a pesticide.


How is Carbazole produced

There are several ways to synthesize carbazole, depending on the starting materials and the desired yield and purity of the final product. Here is one example of a synthesis of carbazole:

Step 1

Aniline is converted to its nitroso derivative, nitrosobenzene, by reacting it with sodium nitrite and hydrochloric acid.

Step 2

Nitrosobenzene is then treated with a reducing agent such as iron filings and hydrochloric acid to convert it to carbazole.

Step 3

The resulting mixture is cooled and filtered to remove any solid impurities, and the filtrate is concentrated under reduced pressure to give carbazole as a white to pale yellow solid.

This is just one example of a synthesis of carbazole, and there may be other methods that are used depending on the specific requirements and conditions of the synthesis.


What is Carbazole used for

Carbazole is a chemical intermediate that is used as a starting material in the synthesis of a variety of chemicals and pharmaceuticals. Some examples of compounds that can be synthesized from carbazole include:


Such as reactive dyes and disperse dyes, which are used in the textile, paper, and printing industries.


Such as phthalocyanine pigments, which are used in a variety of applications including printing inks, coatings, and plastics.


Such as nonsteroidal anti-inflammatory drugs (NSAIDs) and anti-cancer agents.

Flavors and fragrances

Used in a variety of consumer products including food, beverages, and personal care products.

In addition to these uses, carbazole is also used as a corrosion inhibitor and a pesticide.


Further reading


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Notes on the price-data

  • We are continually improving our data collection and processing methods and data will be updated from time to time as we improve the accuracy
  • We are working hard to upgrade the algorithm before April 1, 2023 and a further fine-tune by July 1, 2023
  • This the index trend of the price of the product group in general and not a single specification in particular
  • The data is presented in US$
  • The chart shows the price trend,  nearly always taken from many statistically-correlated sources