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Metal Etchants

Phosphoric Acid Etching Mixture (17708)

PEWS 765-140-57-36 Puranal (Aluminium Etch Leach)

General Information

  • Grade
    • SemEG

Physical Properties

  • Boiling Point/Range
    • > 100 °C (1,013 hPa)
  • Color
    • Colorless
  • Density
    • 1.570 g/cm3 (20 °C)
  • Flashpoint
    • Not applicable
  • Odor
    • Stinging
  • pH
    • Acidic
  • Physical Form
    • Liquid
  • Solubility in Water
    • Completely miscible

Safety Information

  • Corrosivity
    • Corrosive to metals
  • Ignition Temperature
    • Not applicable
  • Incompatible Materials
    • Corrosive in contact with metals, Hydrogen by reaction with metals
  • Thermal Decomposition
    • No decomposition if used as directed.

International Transportation

  • Chemical Class
    • 8
  • Harmonized System Code
    • 38249996
  • Packing Group
    • II
  • UN Number
    • 3264

General Information

  • Grade
    • SemEG

Physical Properties

  • Boiling Point/Range
    • > 100 °C (1,013 hPa)
  • Color
    • Colorless
  • Density
    • 1.570 g/cm3 (20 °C)
  • Flashpoint
    • Not applicable
  • Odor
    • Stinging
  • pH
    • Acidic
  • Physical Form
    • Liquid
  • Solubility in Water
    • Completely miscible

Safety Information

  • Corrosivity
    • Corrosive to metals
  • Ignition Temperature
    • Not applicable
  • Incompatible Materials
    • Corrosive in contact with metals, Hydrogen by reaction with metals
  • Thermal Decomposition
    • No decomposition if used as directed.

International Transportation

  • Chemical Class
    • 8
  • Harmonized System Code
    • 38249996
  • Packing Group
    • II
  • UN Number
    • 3264
  • Grade : SemEG
  • Solubility in Water : Completely miscible
  • Boiling Point/Range : > 100 °C (1,013 hPa)
  • Color : Colorless
  • Flashpoint : Not applicable
  • Physical Form : Liquid
  • Density : 1.570 g/cm3 (20 °C)
  • pH : Acidic
  • Odor : Stinging
  • Thermal Decomposition : No decomposition if used as directed.
  • Ignition Temperature : Not applicable
  • Incompatible Materials : Corrosive in contact with metals, Hydrogen by reaction with metals
  • Corrosivity : Corrosive to metals
  • UN Number : 3264
  • Chemical Class : 8
  • Harmonized System Code : 38249996
  • Packing Group : II
Property
Value
assay of phosphoric acid (H3PO4)
70.83 - 73.83 %
acetic acid (CH3COOH)
8.77 - 10.17 %
nitric acid
1.75 - 2.95 %
arsenic (As)
Max. 0.5 ppm
calcium (Ca)
Max. 10.0 ppm
copper (Cu)
Max. 1.0 ppm
iron (Fe)
Max. 10.0 ppm
potassium (K)
Max. 3.0 ppm
lithium (Li)
Max. 1.0 ppm
magnesium (Mg)
Max. 5.0 ppm
manganese (Mn)
Max. 0.5 ppm
sodium (Na)
Max. 10.0 ppm
nickel (Ni)
Max. 1.0 ppm
antimony (Sb)
Max. 2.0 ppm
silicon (Si)
Max. 1.0 ppm
strontium (Sr)
Max. 1.0 ppm
heavy metals (as Pb)
Max. 5.0 ppm
chloride (Cl)
Max. 1 ppm
sulfate (SO4)
Max. 20 ppm