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      Home / Products / Chemical Products / Electronic Grade Chemicals / Electronic Grade Hydrofluoric Acid

      Electronic Grade Hydrofluoric Acid

      Formula: HF                                          

      CAS No. 7664-39-3     Division Of Class: 8.1, corrosives presenting acidic properties   Physical and chemical properties: Formula is HF, and molecular  weight is 20.01, it is a kind of colorless and transparent liquid, and  the relative density is around 1.15-1.18. It can have a reaction with  normal metal, metallic oxide and hydroxide, generating all kinds of  salts. With high corrosivity, it can erode glass and silicate,  generating gaseous silicon tetra fluoride.  High purity hydrofluoric  acid can be used as highly acid detergent and corrodent, which can also  be used with nitric acid, glacial acetic acid, hydrogen peroxide and  ammonium hydroxide and etc,with certain proportion.   Application range: Hydrofluoric acid can be applied in solar  photovoltaic, LCD, semiconductor industries, mainly playing a role in  surface cleaning of silicon wafer, and cleaning and etching in chip  manufacture process. Besides, it can also be analytical reagent,  industrial chemical reagent in atomic energy and making high purity  chemicals containing fluorine.   Spec.: 

      Chemical Properties

      Guarantee


      National Standard

      EL Grade

      UP Grade

      UP-S Grade

      UP-SS Grade

      HF/%

      40

      49.0±0.5

      49.0±0.5

      49.0±0.5

      49.0±0.5

      Sulphate,ω/%≤

      0.001

      /

      /

      /

      /

      H2SiF6/ (mg/kg)≤

      200

      50

      50

      30

      30

      Cl/ (mg/kg)≤

      5

      5

      5

      0.2

      0.05

      NO3/ (mg/kg)≤

      3

      3

      0.1

      0.05

      PO4/ (mg/kg)≤

      1

      1

      1

      0.1

      0.05

      SO4/ (mg/kg)≤

      10

      5

      5

      0.2

      0.05

      Fe/ (μg/kg)≤

      500

      100

      10

      1

      0.1

      Pb/ (μg/kg)≤

      1000

      100

      10

      1

      0.1

      Metal cation/ (μg/kg)≤

      100

      10

      1

      0.1

      Particle

      (≥1.0μm)/(個/mL)≤

      25

      (≥0.5μm)/(個/mL)≤

      25

      5

      (≥0.2μm)/(個/mL)≤

      20

      Storage and packageIn transportation: it  should be carefully uploaded and discharged, no crashing, no damage, no  being heated and out of the rain. It should be stored in the well  ventilated warehouse.

       Contact: ZHU YI KUN  13523188572