Saturday, March 28, 2009

Boric Acid

Boric acid (Orthoboric Acid)
CAS : 10043-35-3 (H3BO3)
Properties : Colorless, Odorless, white or scales powder, stable in air. Soluble in boiling water, alcohol, glycerol. Noncombustible
Density : 1.4347 (15C).
Derivation :
- By adding hydrochloric or sulfuric acid to a solution of borax and crystallizing.
- From weak borax brines by extraction with a kerosene solution of chelating agent such as 2-ethyl-1,3-hexanediol or other polyols. Borates are stripped from the chelate by sulfuric acid.
Hazard : Toxic via ingestion, Use only weak solutions. Irritant to skin in dry form.
Grade : Technical 99,9 %

Use : Heat resistant (borosilicate) glass, porcelain enamels, boron chemicals, welding flux, brazing copper, nickel electroplating baths.
Function in Nickel Plating : As buffer in Nickel Solution. Stabillizing pH.

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