Disodium octaborate tetrahydrate.
Disodium octaborate tetrahydrate, an alkaline salt, as a white, odorless, powdered material and is not flammable, combustible, or explosive and has low acute oral and dermal toxicity. It contains 20% Boron and used in agriculture. It is one of a family of borate compounds (containing boron and oxygen), which are considered absolutely toxic to insects.