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  1. firkelloy

    Concentration of Picral

    If I am adding 4 grams of picric acid to 100ml of ethanol, and the specific gravity of picric acid is 1.77, wouldn't the concentration of the resulting be 2.26%? All the handbooks and manuals I have found call this a 4% picral solution. What am I missing?
  2. firkelloy

    Ac1 temperature calculation

    Does anyone have an equation to calculate the Ac1/Ac3 temperature for steel from its chemistry? I am more interested in the Ac1. Any information you have would be helpful. Thank you.

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