ASTM D237-57(1997) PDF

1.1 This specification covers three types and four grades of orange shellac and other lac, as follows:

1.1.1 Type I , orange shallac, grades A, B, C, and D,

1.1.2 Type II , button lac, and

1.1.3 Type III , garnet lac.

1.2 Stick-lac and seed-lac are not covered by this specification.