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). "Naphthalene Derivatives". Ullmann's Encyclopedia of Industrial Chemistry . Weinheim: Wiley-VCH. doi:10.1002/14356007.a17_009. ISBN   978-3-527-30673-2.
2. Collin, Gerd; Höke, Hartmut; Greim, Helmut (2003). "Naphthalene and Hydronaphthalenes". Ullmann's Encyclopedia of Industrial Chemistry . Weinheim: Wiley-VCH. doi:10.1002/14356007.a17_001.pub2. ISBN   978-3-527-30673-2.
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 U.S. National Library of Medicine Medical Subject Headings (MeSH)