On the page 6 of the MSDS for Inipol EAP 22 dated 9-25-01

#12 Ecological Information:

2-Butoxy ethanol

This material has a high biological oxygen demand and is considered to be readily biodegradable.

  Biodegradation reached 74% in the Modified Sturm carbon dioxide evolution test. 

This material consumed >70% of the theoretical oxygen demand, with no inhibition of the test system, in the Closed Bottle test.  Biochemical oxygen demand (BOD) using unadapted and adapted sewage seed was . 70 gram oxygen consumed/gram product and 1.63 gram oxygen consumed/gram product, respectively.  BOD of unadapted seweage seed was 30% of the theoretical oxygen demand and for adapted sewage seed was 71% of theoretical oxygen demand.  The Chemical oxygen demand (COD) is 2.18 gram oxygen consumed/gram product.

 

Urea

This material does not appear to bioaccumulate in fish and is slowly biodegraded in river waters

There is almost a whole page on toxicological Information (#11)

 Pennsylvania has a hazard sheet not only for 2-butoxyethanol, but also for oleic acid, which they consider hazardous enough to have its own hazard sheet... Looking for its MSDS sheet or more info