Boron Trichloride


Used in semiconductor and pharmaceutical industries, as well as high-performance boron fibers for aircraft parts and sporting equipment.

Product Information

Brand Name Trona® Boron Trichloride
Chemical Name Boron Trichloride
Manufacture Location Henderson, Nevada  USA
Formula BCl3
Molecular Weight 117.17
CAS Number 10294-34-5
Appearance Clear, colorless liquid or gas, fumes in air

Typical Chemical Analysis

Element   Standard High Purity Ultra Purity*
Boron Trichloride (BCl3) % weight 99.9% 99.99% 99.999%
Phosgene (COCl2) ppm <300 <10 <1
Silicon (Si) ppm <10 <5 <1
Chlorine ppm <2 <1 <0.5

Other Properties

Property Value
Density (liquid) at 12.5° C 1.346 g/cc
Density (vapor) at 12.6° C 5.00 g/l
Boiling Point at 760 torr 12.5° C
Melting Point -107° C


Boron Trichloride is packaged in 100-pound net (DOT 4BW–400) and 1200-pound net (DOT 4BW-240) steel cylinders. Cylinders are strapped (metal) to wooden pallets prior to shipment. The 1200-pound cylinders are equipped with separate valves for liquid and/or gas dispensing. Labeled as DOT Hazard class – 2.3 (poison gas), 8, UN 1741 –

Poison Inhalation Hazard Zone C. Customer cylinders of varying sizes may be filled upon request.