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Sodium cacodylate trihydrate

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Sodium cacodylate trihydrate Basic information
Sodium cacodylate trihydrate Chemical Properties
  • Melting point:77-80 °C
  • storage temp. room temp
  • solubility H2O: 0.5 M at 20 °C, clear, colorless
  • form Solid
  • color White
  • PH9.0-9.5 (100g/l, H2O, 20℃)
  • Water Solubility Soluble in water and alcohol. Insoluble in diethyl ether.
  • Merck 14,8595
  • BRN 3702348
  • CAS DataBase Reference6131-99-3(CAS DataBase Reference)
Safety Information
  • Hazard Codes T,N
  • Risk Statements 23/25-50/53-40
  • Safety Statements 20/21-28-45-60-61
  • RIDADR UN 1688 6.1/PG 2
  • WGK Germany 3
  • RTECS CH7890000
  • 3
  • TSCA Yes
  • HazardClass 6.1
  • PackingGroup II
  • HS Code 29319090
Sodium cacodylate trihydrate Usage And Synthesis
  • Chemical Propertieswhite crystalline powder or crystals
  • Chemical PropertiesSodium cacodylate is a white crystalline solid which occurs as the trihydrate. It liquefies in the water of hydration @ 60°C and becomes anhydrous @ 120°C.
  • Potential ExposureThis material has been used as a nonselective herbicide and for general weed control.
  • ShippingUN1688 Sodium cacodylate Hazard Class: 6.1; Labels: 6.1-Poisonous materials. UN3465 Organoarsenic compound, solid, n.o.s., Hazard Class: 6.1; Labels: 6.1Poisonous materials, Technical Name Required
  • IncompatibilitiesIncompatible with oxidizers, strong bases; acids, active metals (iron, aluminum, zinc). Contact with acids react to form highly toxic dimethylarsine gas. Attacks some metals.
  • Waste DisposalFor cacodylic acid, precipitate as calcium arsenate and calcium arsenite by treatment with excess lime water. Recycle if possible. If not, put in secure storage for possible disposal in leach-proof dumps. In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Must be disposed properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office.
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