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General Characteristics

Boron Trichloride is a colorless, corrosive, nonflammable toxic gas with an irritating, acrid odor. It forms dense fumes in humid air. Boron Trichloride is irritating to the mucous membranes. It hydrolyses in moist air to form hydrogen chloride. It is shipped as a liquefied gas under its own vapor pressure.

Physical Information

Molecular Weight

117.17

Flammability Limits in air

Nonflammable

Specific Gravity,
Gas @ 70&degF(21.1&degC),
1 atm(Air=1)

4.04

Density,
Gas @ 70&degF
(21.1&degC), 1 atm

0.303lbs/ft^3 (4.85g/ml)

Density, Liquid @ 0&degC,

85.8lbs/ft^3 (1.373g/ml)

Specific Volume,
Gas @ 70&degF
(21.1&degC), 1 atm

3.3ft^3/lb (206ml/g)

Boiling Point @ 1 atm

54.5&degF (12.5&degC)

Melting Point @ 1 atm

-161.1&degF (-107.3&degC)

Critical Temperature

353.8&degF (178.8&degC)

Toxicity

TLV-TWA

5 ppm

LC50

2541 ppm