Elemental Boron


Overview

Used in the igniter system of automobile airbags and military flares.

Product Information

Brand Name Trona® Elemental Boron
Chemical Name Elemental boron
Other Name Amorphous boron
Manufacture Location Henderson, Nevada  USA
Formula B
Molecular Weight 10.81
CAS Number 7440-42-8
Appearance Fine dark brown powder
B Isotopes Ratio as occurring in nature
Specifications Meets or exceeds the requirements of Specifications OS 11608 and Mil-B-51092

Typical Chemical Analysis

Element Percent Weight (typical) Percent Weight (specification)
Boron (net as B) 90 – 91 89.5 – 92.0
Water soluble Boron 0.4 – 0.5 0.52 (max)
Magnesium (Mg) 4.0 – 4.5 5 (max)
Insoluble in H2O2 0.15 – 0.30 1.0 (max)
Moisture 0.05 – 0.30 0.5 (max)

Typical Screen Analysis

U.S. Standard Sieve No. Percent Cumulative
20 10%
40 65%
60 90%
100 97%

Other Properties

Property Percent Weight (typical) Percent Weight (specification)
Surface Area (N2 BET) 15 – 25 m2/6 n/a
Average Particle Size 0.6 – 0.8 Microns 1.0 Microns (max)

Packaging

Elemental boron is packaged in five-pound (two-gallon) plastic buckets; 25-pound (eight-gallon) steel drums; and 50-pound (16-gallon) steel drums.  Polyethylene liners are used in all containers.