Interpretation of phrase "as if" (in Explanation to Notification No. 119/75-C.E.):

The phrase "as if" introduces a deeming fiction, whereby—for the limited purpose of interpreting "job work" under the notification—the full scope of "manufacturing process" (as defined under Section 2(f) of the Central Excise Act, 1944) is to be read down or treated as if confined solely to processes that are incidental or ancillary to the completion of a manufactured product (!) (!) (!) .

Key principles governing "as if" deeming: - Creates a legal fiction: the wide statutory definition of manufacturing process is hypothetically narrowed; primary processes transforming an article into a fundamentally new product (with altered name, character, or use) are excluded from job work (!) (!) (!) . - Purpose-limited: deeming applies only for determining eligibility under the notification; does not amend or override the general statutory definition elsewhere (!) (!) . - Essential identity test reinforced: post-process article must plausibly retain identity of the customer-supplied input; total transformation defeats deeming (!) (!) .

Application here: Customer-supplied chlorine undergoing reaction with assessee's ethylene results in vinyl chloride—a new chemical entity where chlorine loses identity—not an "incidental" process under the "as if" deeming; full value liable to duty (!) (!) (!) .