1. Boron Trihalides (BX3) Properties Toxicity Handling First Aid
Colorless gas (X = F, Cl), liquid (X = Br), or solid (X = I)
Reacts with water to release gaseous HX
Lewis acid
Adducts (etherates, dimethyl sulfide, etc.) are common
Toxicity
Highly toxic by skin absorption, inhalation, or ingestion
Corrosive (severe burns)
Rapid evaporation of the liquid from the skin may cause frostbite
Handling
Follow all standard procedures for dangerous chemicals, including reviewing safety and proper handling, notifying safety officers, wearing PPE, and never working alone
Quench with alcohol at 0 ºC, followed by aqueous solution of base
First Aid
Remove contaminated clothing, and immediately flush exposed area with cold, running water for 15 minutes
Get medical attention immediately