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Colorless crystals that are used as wetting agents in soaps and also as preservatives in paints and pharmaceuticals.

Chemical structure


Synonyms and Related Terms

ethyl p-hydroxybenzoate; ethyl para amino benzoic acid; 4-hydroxybenzoic acid ethyl ester; Nipagin A; Ethyl Parasept


  • Contact may cause irritation.
  • Fisher Scientific: MSDS

Physical and Chemical Properties

Soluble in ethanol and ether. Insoluble in water.

Composition C9H10O3
CAS 120-47-8
Melting Point 115 C
Molecular Weight mol. wt. = 166.18
Boiling Point 297-298 C

Resources and Citations

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 3883
  • Richard C. Wolbers, Nanette T. Sterman, Chris Stavroudis, Notes for Workshop on New Methods in the Cleaning of Paintings, J.Paul Getty Trust, Los Angeles, 1990
  • Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979

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