... anhydride, butyraldehyde, octanol,pentaerythritol, paraldehyde and other important chemical raw material.GB 2760_2007 provides for the time being to allow the ... , apples, butter and other type flavor.Specifications acetaldehyde 99%ItemStandardColor(APHA)10maxAcetaldehyde,%99.0minAcidity(by CH3COOH),%0.05maxVaporites deposits,w/% 0.0025maxPropionaldehyde ...