Naphthalenesulfonate

Naphthalenesulfonates are derivatives of sulfonic acid that contain a naphthalene functional unit. A subfamily of compounds are the aminonaphthalenesulfonic acids, which describes precursors to several azo dyes.[1][2]

* Naphthalenesulfonates
* amaranth dye, an azo dye

* amido black, a azo dye

* congo red, a popular azo dye

* trypan blue, an azo dye

* suramin, a medication used to treat African sleeping sickness and river blindness

* Naphthalenesulfonate/formaldehyde superplasticizer

The alkylnaphthalene sulfonates are used as superplasticizers in concrete. They are produced on a large scale by condensation of naphthalenesulfonate or alkylnaphthalenesulfonates with formaldehyde. Also called water reducers, they improves the flowability of concrete (before it sets), which allows for high-strength, high-performance concrete and mortar with lower water-to-cement ratios.[3]

## 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.
3. ↑ Blask, Oliver; John, Elisabeth; Stephan, Dietmar (2021). "Construction Chemistry". Ullmann's Encyclopedia of Industrial Chemistry. pp. 1–80. doi:10.1002/14356007.w07_w01. ISBN 978-3-527-30385-4.

## External links

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

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