North American Product Classification System (NAPCS) Canada 2012 Version 1.2
271 - Basic chemicals
This group comprises basic chemicals.
27111 - Industrial gases
This class comprises industrial gases.
271111 - Oxygen
This subclass comprises oxygen.
271112 - Nitrogen
This subclass comprises nitrogen.
271113 - Carbon dioxide
This subclass comprises carbon dioxide, in gas or solid form.
271114 - Acetylene
This subclass comprises acetylene.
271115 - Industrial gases, n.e.c.
This subclass comprises industrial gases, in gas or liquid form, n.e.c.
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