Naphthalenesulfonate

Naphthalenesulfonates

amaranth dye

amido black

congo red

suramin

trypan blue

Naphthalenesulfonates are derivatives of sulfonic acid which contain a naphthalene functional unit. A related family of compounds are the aminonaphthalenesulfonic acids. Of commercial importance are the alkylnaphthalene sulfonates, which are used as superplasticizers in concrete. They are produced on a large scale by condensation of naphthalenesulfonate or alkylnaphthalenesulfonates with formaldehyde.[1][2]

Examples include:

* amaranth dye
* amido black
* armstrong's acid
* congo red
* Evans blue
* suramin
* trypan blue

## References

1. ↑ Booth, Gerald (2005). "Ullmann's Encyclopedia of Industrial Chemistry". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a17_009.
2. ↑ Collin, Gerd; Höke, Hartmut; Greim, Helmut (2003). "Ullmann's Encyclopedia of Industrial Chemistry". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a17_001.pub2.

## External links

* Naphthalenesulfonates at the US National Library of Medicine Medical Subject Headings (MeSH)

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