Input (grade 13): Generally regarded to be the first thermoplastic, it was first created as Parkesine in 1862 and as Xylonite in 1869, before being registered as Celluloid in 1870.
Output (grade 4): It was the first thermoplastic. It was first called Parkesine in 1856, then Xylonite in 1869 and then Celluloid in 1870.