Potassium arsenate

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Description

White powder or colorless crystals. Potassium arsenate was used for preserving hides and printing textiles. It was also used as an Insecticide, especially in fly paper.

Synonyms and Related Terms

Macquer's salt; potassium acid arsenate; potassium dihydrogen arsenate; arseniate of potash

Hazards and Safety

  • Toxic by ingestion and inhalation.
  • Skin contact causes irritation.
  • Sigma Aldrich: SDS

Physical and Chemical Properties

Soluble in water, glycerol. Insoluble in ethanol.

Composition KH2AsO4
CAS 7784-41-0
Melting Point 288 C
Density 2.867 g/ml
Molecular Weight mol. wt. = 180.0

Resources and Citations

  • L. Goldberg, A History Of Pest Control Measures In The Anthropology Collections, National Museum Of Natural History, Smithsonian Institution, JAIC (35):23-43, 1996
  • 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 7767