精甲醇优等品的乙醇含量不能超过多少? item limit method appearance free of opalescence, suspended matter, and sediment purity, wt % min 99.85 acetone, wt % max 0.002 astm e 346 colour, pt-co max 5 astm e 346 water, wt % max 0.1 astm e 346 distillation range at 760 mmhg max 1.0°c to include 64.6 ±0.1°c astm e 346 specific gravity, 20°c / 20°c max 0.7928 astm e 346 permanganate fading time no discharge of colour in 50 minutes astm e 346 ethanol, wt % max 0.001 astm e 346 carbonisable substances pt-co scale max 30 astm e 346 acidity as acetic acid, wt % max 0.0015 astm e 346 non-volatile matter, mg/100 ml max 10 astm d 1353 odour characteristic, non-residual astm d 1296 [ ]查看更多