... and plasticizer. The film and plastic articles made form ethyl cellulose have good mechanical strength and toughness at higher ... of Table 2Solubility,% ≥99.0Ash content,%≤0.3Water content,%≤3.0Heat resistance120,16hNo yellowing,agglomeration or coking viscostiy specViscosity ... -toluene solventmP.s Residue on ignition,% ≤0.4Drying loss,% ≤3.0Heavy metal,% ≤ 0.0020Arsennic salt,% ≤ 0.0002 specViscosity ...