Colemanite (2CaO·3B₂O₃·5H₂O)
B₂O₃= 39.50 – 40.50%
CaO= 26.00 – 28.00%
• Melting Point: 930ºC
• Solubility in Water: 0.81% by weight @ 20ºC of a saturated solution
• pH: 9.5 (1.0% solution @ 20ºC)
• Approx. Bulk Density: 55 lbs/ftᶟ
• Decomposition: Dehydration begins 105ºC
Colemanite is a naturally occurring, mineral borate product used in many different applications, including heat-resistant glass, glazes, enamels, cleaning products, roofing products, fiberglass, flame retardancy, steel making/slag modification and agriculture.
Bulk 2,200 lb. super sack and in 25 kg net (55.2 lb. net) multiwall paper bags, and custom packaging
Colemanite TSCA (SARA Title III) Status: Listed. For further information, please call the E.P.A. at +1.202-554-1404.
Colemanite CAS Number: 1318-33-8
Colemanite EC Number: 296-640-5
U.S. National Library of Medicine (NIH): Substance Listing