1. M

    determine small amount methanol in solutions

    i like homebrewing but i don't know how to realize my homemade alcohol is safe even existing small volume of methanol has high risk to make someone blind i have tested my alcohol with red litmus paper but methanol and ethanol bout of them make it blue so this not good method. i added dicromate...
  2. B

    how to prepare 90% methanol???

    i have problem to prepare 90% methanol. i used 100 ml volumetric flask to prepare it. by using burette( 50 ML 1X AND 20 ML 2X) , i pour 90 ml of methanol SupraSolv (R) by MERCK into 100ml volumetric flask. then i top up with distilled water up to calibration mark. my problem is, when i left the...