Summary:
   The product is benzotriazole refined from O-Phenylenediamine diazotized by sodium nitrite which widely used in copper, silver corrosion inhibitor and antirusting grease.
Property:
   Appearance: Light yellow crystal
   Chroma: < 180
   Water: < 0.2%
   Melting point : > 94%
   PH value: 5.5～ 6.5
   Ash content : < 0.20%
   Purity: 97%
Dosage and usage:
  Individual or coordinating use, the general amount is 1～ 2ppm.
Safety protection:
   No special requirements.
Package and storage:
   10kg or 20kg in plastic knitting package and dampprof storage.