Common packaging materials are not additive, such as polyethylene, polypropylene, the use of these materials made of food bags, oil drums, snack boxes, etc. are non-toxic, how to identify your use of plastic products can be harmless, the following methods for reference:
Cut the sample down, clamp down with tweezers, put out in the extinguishing alcohol lamp (if no alcohol lamp can be replaced with the candle extinguish), then inspect its quenching and easy, after the fire condition, flame and paecilomyces Fumosoroseus, extinguish the scene and the breath of recovery, and so on, the implementation of comprehensive discriminant is known to what kind of plastics.
PVC: Non-flammable, out of fire, flame and paecilomyces fumosoroseus for the bottom is green, the tip is yellow, the fire is extinguished after the soothing smell of hydrochloric acid.
Polyethylene plastic: combustible, fire from the follow-up, Flame and paecilomyces Fumosoroseus bottom orchid top yellow, burning when the melting of the drip, recovering the wax.
Polypropylene plastic: Flammable, fire-off, flame and paecilomyces fumosoroseus for orange yellow, burn-off with a drip of dissolved objects, oil breath.