[ Top ] [ Japanese ]

Borax

• Na₂B₄O₅(OH)₄,8H₂O
• [Na₂(H₂O)₈]²⁺[H₄B₄O₉]^2-

• Class: Soroborate (Triangle + Tetrahedron) - Hydrate
• Soluble in: Water
• Insoluble in: HCl
• Magnetism: Diamagnetic
• Fluorescence: Phosphorescence (Bluish green)
• Taste: Alkaline
• Dehydrate to Tincalconite.

• 8H₂O => 5H₂O: Tincalconite

• Color: Colorless-White
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent-Opaque

• Cleavage: Perfect on {100} (1 plane), Good on {110} (2 planes), Indistinct on {010} (1 plane)
• Hardness: 2-2.5
• Density: 1.7

• System: Monoclinic
• Group: 2/m, A2/a
• Lattice: a=12.2, b=10.6, c=11.9, β=106.6