Propylene
glycol is a colorless organic liquid. Its chemical name is 'Propane-1,2' with
the formula C3H802. The CAS registry number is 57-55-6. Typical names are
propylene glycol (PG) and monopropylene glycol (MPG). Propylene glycol can be
made in various grades. The most controlled grade is called propylene
glycol-USP / EP and is manufactured and distributed according to high
industry standards. Normal PG class is called industrial type. Both grades
can be traded under different brand names.
Propylene glycol used in the electronic cigarette is a colorless and sweet
liquid, with a thick and sticky texture. Propylene glycol is used in the
production of food and cosmetics, it is safe for humans and environmentally
friendly.
It is the substance that helps dissolve the flavorings contained in the
electronic cigarette and with the help of heat provides the steam that
simulates the cigarette smoke. |