Industrial Grade Urea 46% High Nitrogen (46-0-0) is a highly concentrated granular form of fertilizer containing 46% nitrogen by weight. This product is fast-acting, water-soluble and can be added to soil or made into a liquid solution and sprayed on vegetables, trees, and of course the lawn.  

Urea is relatively safe to handle, its non-toxic to humans and animals, and does not accumulate in soil. 

Urea Certificate of Analysis (Example COA)

Urea Safety Data Sheet (SDS)