Outline

With the increasing level of high performance and integration of super LSI devices and other IC products in the semiconductor industry, dry-etching gases are in high demand for use in ultrafine fabrication. UBE was the first company to produce boron trichloride in Japan, and it is of the highest quality and purity, making a perfect choice for a dry-etching gas for aluminum wires.

Manufacturing and Product Information

• A new manufacturing method based on UBE’s proprietary technology. (Patented in a number of countries, including Japan, the U.S., Canada, and the EU.)
• Extremely high-purity boron trichloride can be manufactured in a closed system that uses boric acid as a raw material.
• Quality guaranteed through advanced analysis capabilities.
• No quality irregularities thanks to integrated production that starts from raw materials.

Quality

Purity	99.999％or better
Impurities	Impurities (typical analysis results in ppb)Ag< 0.2Co< 3.0Mg< 4.0Pb< 0.2Al< 2.0Cr< 0.2Mn< 1.0Sb< 1.0Bi< 5.0Cu< 0.5Mo< 0.5Si< 200Ca< 5.0Fe< 20Na< 2.0Sn< 10Cd< 0.1K< 4.0Ni< 3.0Zn< 4.0*There is a detection threshold for impure gases. The remaining amount of phosgene (COCL2) and chlorine (Cl) is below the detection thresholds (0.2ppm for phosgene and 1 ppm for chlorine).

Properties

Appearance	Transparent, colorless liquid
Odor	Similar to hay
Molecular weight	117.2
Boiling point (°C)	12.4
Melting point (°C)	-107
Liquid density (kg/l)	1.434（0 ℃）

Uses, Packaging and Notes of Caution on Handling

Uses	Since UBE’s boron trichloride is of the highest quality, it can be widely used for all manner of applications, including:Dry-etching gas for aluminum wiresGas for CVDRaw material for boron nitride (BN)Raw material for pharmaceutical and agrochemicalsRaw material for catalysts
Packaging	Internal volume (l): 10l, 47lFilled weight (kg): 10kg, 50kg
Note of Caution on Handling	Although this chemical is nonflammable, it produces heavy white smoke in damp air, and breaks down into boric acid and chlorine.