Phosphoric Acid → HCID 86735709, compound

Participants

Reaction Steps

To a round bottom, 3 liter, 3-necked reaction flask fitted with a heating mantle, mechanical stirrer, reflux condenser and thermometer are added 1650 parts of 85% phosphoric acid. Under mild agitation, 50 parts of granular boric acid are charged to yield a boric acid-phosphoric acid dispersion. The boric acid is added as a smooth steady "stream", as opposed to dumping in bulk, to avoid clumping. To the agitated dispersion are added 310 parts of hydrated alumina (Alcoa, C-33 grade) as a smooth steady stream to give a milky-white slurry.

Provenance & Evidence