It is, as others say, a VOC, combustible (in reality, fire hazard, 
quasi-null), used frequently in cosmetics, has surfactant qualities etc. 
  Its vapour will have a small GWP (possibly <10) but it is not a 
controlled substance. It is biodegradable but its BOD5 and COD are quite 
high: your sewage treatment plant may need to know if you plan to send 
considerable quantities their way.

Brian

Phil Nutting wrote:
> Brian and other chemists out there,
> 
> Where does "Propylene glycol n-propyl ether" fall on the environmental and global warming chart?
> 
> Phil
> 
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