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Boron oxide, boric acid

Features

As the only boron oxide manufacturer in Japan, Nippon Denko supplies high-quality, high-purity products that contain minimal impurities.
In addition, our lead time from manufacturing to delivery is short, which enables us to provide products with stable quality in the minimum amount of time.

Uses

Boric acid

  1. Glass, colorants, coating, preservatives, pigments, and glazing

Refined boric acid

  1. Electrolytic capacitors, glass, and reactor control materials

Boron oxide (Anhydrous boric acid)

  1. Glass, catalysts, and fluxes

unit : wt%

Boric Acid Refined Boric Acid
Specification Typical Specification Typical
H3BO3 99.9% min 99.9 99.50% min 99.57
SO4 0.008 % max 0.003 5 ppm max 4 min
Cl 0.0005 % max 0.0001 0.5 ppm max 0.4 min
Fe 0.0004 % max 0.0001 2 ppm max 1 min
Na 0.001 % max 0.0002
Pb 5 ppm max 4 min

unit : wt%

Boron Oxide
Specification Typical
B2O3 98.0 % min 98.5
MgO 0.03 % max 0.001
Al2O3 0.2 % max 0.001
SiO2 0.3 % max 0.001
CaO 0.03 % max 0.001
Fe2O3 0.1 % max 0.001
Na 0.1 % max 0.001