... Weight: 82.00 Since 1985 Large stock Phosphorous acid is a colorless crystal. It can be ... toxic). As a dibasic acid, it has slightly be acidity than phosphoric acid. Phosphorous acid has b reducibility and ... TestColorless transparentColorless transparent, without impuritiesLiquid Phosphorous Acid (%) ≥ 70-80Colorless, transparentThe application of phosphorous acid: used in water treatment, as ...