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Phthalilc Anhydride
Formula: C6H4(CO)2O
Sp. Gr.: 1.5
Viscosity: Thin
Remarks: White, crystalline needles; soluble in alcohol; melts at 127°C / 260°F. Used in making alkyd resins, plasticizers, hardener for resins, used in making chlorinated products, insecticides and diethyl and dimenthyl phthalate. Phthalic anhydride sets up to a brittle solid when it comes in contact with moisture.
Pump Notes: Cast iron construction is usually satisfactory but other construction may be requested. PTFE or Kalrez® elastomers are recommended as is a mechanical shaft seal.
Kalrez® is a registered trademark of DuPont Dow Elastomers®, L.L.C.