HF Aqueous 70% Solution

• Performance Function : Feedstock

• Concentration : 30.00% water|70.00% HF acid

• Application : Chemical Derivatives|Chemical Milling|Glass Etching/Frosting|Metal Pickling|Quartz Purification|Rare Metal Processing

• CAS Number : Hydrofluoric Acid: 7664-39-3|Water: 7732-18-5

• Synonyms : HF|HF Acid

• Grade : Aqueous 70% Solution

• pH : Acidic

• Solubility in Water : Completely miscible

• Melting Point/Range : -76 °C

• Boiling Point/Range : 65 °C (1,013 hPa)

• Vapor Pressure : 183 hPa at 21.1 °C(70.0 °F) hectopascal

• Physical Form : Liquid

• Flashpoint : Not applicable

• Density : 1.230 g/cm3 (20 °C)

• Color : Colorless

• Odor : Stinging

• Incompatible Materials : Contact with alkalies and some oxides cause strong violent exothermic reactions|Contact with metals will yield hydrogen gas, a fire and explosive reactive hazard|Glass and silicate-containing materials are attacked|HF contact with carbonates, sulfides and cyanides yield toxic gases such as carbon dioxide, hydrogen sulfide and hydrogen cyanide|HF contact with glass, concrete and other silicon bearing|On dilution or dissolving in water, considerable heating always occurs|Pressure buildup from this process has been known to rupture glass containers|When diluting, add acids to water, never the other way around

• Thermal Decomposition : Fire or intense heat may cause violent rupture of packages.

• Ignition Temperature : Not applicable

• Chemical Stability : Stable under normal conditions

• Corrosivity : Corrosive to metals

• Harmonized System Code : 28111100

• Chemical Class : 8

• Packing Group : I

• Sub Class 1 : 6.1

• UN Number : 1790