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EWC Solvents

PV(Photovoltaic) product는 광전지/태양전지/반도체의 공정에 들어가는 전반적인 화학제품을 총칭하는 말로 이전에 소개 드렸던 General etchant이외에 초고순도의 H2O2, KOH, HCL, H3PO4, POCl3, HNO3, NH3등이 있습니다. 본 제품들은 주로 Texturing/Module/Etching&Edge/Cleaning 등의 공정에 사용이 됩니다.

EWC’s Business in PV

H2O2(Hydrogen peroxide) Solar grade

H2O2 물성표

Property Symbol Unit Specification TDS MSDS
Aluminium Al ppb MAX  0.0 Link Link
Arsenic As ppb  
Barium Ba ppb MAX  0.0
Boron B ppb  
Cadmium Cd ppb MAX  0.1
Calcium Ca ppb MAX  0.1
Chromium Cr ppb MAX  0.1
Cobalt Co ppb MAX  0.1
Copper Cu ppb MAX  0.1
Gallium Ga ppb  
Germanium Ge ppb  
Iron Fe ppb MAX  0.1
Lead Pb ppb MAX  0.1
Lithium Li ppb MAX  0.1
Magnesium Mg ppb MAX  0.1
Manganese Mn ppb MAX  0.1
Nickel Ni ppb MAX  0.1
Potassium K ppb MAX  0.1
Silicon Si ppb MAX  10
Silver Ag ppb MAX  0.1
Sodium Na ppb MAX  0.1
Strontium Sr ppb MAX  0.1
Tin Sn ppb MAX  0.1
Zinc Zn ppb MAX  0.1
Particle Count (0.5 micron and above)   pcs/ml  

KOH(Potassium Hydroxide) Solar grade

KOH 물성표

Item Symbol Unit Specification TDS MSDS
Assay   % 44.5~45.5 Link Link
Potassium Carbonate   % MAX  0.5
Ammonium hydroxide precipitate   %  
Insoluble matter   ppm  
Nitrogen compounds (as N)   ppm MAX  5
Ammonium NH4   MAX  10
Arsenic As   MAX  5
Chloride Cl ppm MAX  3
Phosphate PO4 ppm MAX  5
Sulfate SO4 ppm MAX  10
Aluminium Al ppm MAX  3
Calcium Ca ppm MAX  3
Cobalt Co ppm MAX  0.6
Copper Cu ppm MAX  0.3
Iron Fe ppm MAX  2
Nickel Ni ppm MAX  0.3
Silver Ag ppm  
Sodium Na ppm  
Chromium Cr   MAX  0.6
Magnesium Mg   MAX  0.6
Manganese Mn   MAX  0.3
Zinc Zn   MAX  0.6

HCl(Hydrogen chloride) Solar grade

HCl 물성표

Item Symbol Unit Specification TDS MSDS
Aluminium Al ppm MAX  0.05 Link Link
Arsenic As ppm MAX  0.01
Barium Ba ppm MAX  0.05
Boron B ppm MAX  0.05
Cadmium Cd ppm  
Calcium Ca ppm MAX  0.05
Chromium Cr ppm MAX  0.02
Cobalt Co ppm MAX  0.02
Copper Cu ppm MAX  0.02
Gallium Ga ppm  
Germanium Ge ppm  
Iron Fe ppm MAX  0.1
Lead Pb ppm MAX  0.2
Lithium Li ppm MAX  0.02
Magnesium Mg ppm  
Manganese Mn ppm MAX  0.1
Nickel Ni ppm MAX  0.02
Potassium K ppm MAX  0.02
Silicon Si ppm  
Silver Ag ppm MAX  0.02
Sodium Na ppm MAX  0.5
Strontium Sr ppm  
Tin Sn ppm MAX  0.01
Zinc Zn ppm MAX  0.1
Beryllium Be   MAX  0.02
Bismuth Bi   MAX  0.1
Platinum Pt   MAX  0.2
Titanium Ti   MAX  0.05
Titanium Ti   MAX  0.1
Vanadium V   MAX  0.05
Zirconium Zr   MAX  0.1

H3PO4(Phosphoric acid) Solar grade

H3PO4 물성표

Item Specification TDS MSDS
Appearance Viscous liquid Link Link
Color Colorless
Color Characteristic
Melting point/Freezing point ca. 21℃
Boiling point/Boiling range ca. 135℃
Flash point ./.
Concentration 75%~86%
Cas no. 7664-38-2
Plant Bernburg, Germany