Nomenclature
CAS number: 12007-58-8
Ammonium boron oxide ((NH
4)
2B
4O
7); ammonium tetraborate; ammonium biborate; ammonium metaborate.
B
4H
8N
2O
7; mol wt 191.32.
B 22.60%, H 4.21%, N 14.64%, O 58.54%.
(NH
4)
2B
4O
7.
Description and references
Prepn: Gmelins, Ammonium (8th ed.) 23, 323 (1936).
Derivative
Tetrahydrate.
Properties
Tetragonal crystals. Sol in water. Practically
insol in alcohol.Use
Fireproofing wood and textiles; in electrolytic
condensers.