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PRODUCT SPECIFICATION SHEET <br />o. Alexander Chemical HYDROFLUOSILICIC ACID <br />-� <br />corporation Effective 11/7/2003 <br />Updated: 6/21/2013 <br />Chemical Properties: <br />Chemical formula: HZSiFs <br />Molecular weight: 144.06 <br />Hydrofluosilicic acid, %: 23.00 - 25.00 <br />Hydrofluoric acid (HF), %: 1 Maximum <br />Heavy metals as lead, ppm: 200.00 maximum <br />Color: 25 APHA maximum <br />Physical Properties: <br />Boiling point, OF: <br />225.00 <br />Freezing point, OF: <br />- 4.00 <br />Specific gravity @ 60 OF: <br />1.223 @ 25.00 % <br />Vapor pressure, mm Hg @ 167 OF: <br />218 <br />pH: <br />1.2 <br />Appearance: <br />White to Straw Yellow <br />Odor: <br />Sour, pungent <br />Solubility in water: <br />Complete <br />NSF International maximum use: <br />6.00 milligrams per liter <br />Meets ANSI / AWWA specification B703-06 <br />Packaged by: <br />Alexander Chemical Corporation <br />Kingsbury Industrial Park <br />Kingsbury, Indiana 46345 <br />800-348-8827 <br />