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781 is granular activated carbon made of selected wood sawdust. Produced under strictly controlled chemically activation processes at a high temperature and acid washing refining, this carbon is characterized by large surface area, prosperous pores structure, perfect chemical stability and Speedy filtration. With the homogeneous particle distribution, this carbon is specially suitable for productions of pharmacy and chemicals which have special requirement on the filtration speed.
769 is granular activated carbon made of selected wood sawdust. Produced under strictly controlled chemically activation processes at a high temperature and acid washing refining, this carbon is characterized by large surface area, prosperous pores structure, perfect chemical stability and Speedy filtration. Comparing with 781 type, 769 type possesses larger pores structure and are more suitable for the selective adsorption for the macromolecular organic chemicals. 769 type is widely used in productions of pharmacy and chemicals which have special requirement on the filtration speed and the material to be adsorbed is the macromolecular organic chemicals.
781type and 769 type are widely used in the following applications:
1.Refining, filtration and decolorization for medicine, chemicals and food
2.Refining and decolorization for pharmaceutical intermediates
Typical Technical Parameters:
Items | 781 | 769 |
Quinine sulfate adsorption ≥ mg/g | ≥120 | - |
B Molasses adsorption rate % | - | ≥100 |
Methylene blue adsorption value ml/g | ≥120 | - |
PH value | 4.5-7.5 | 3.0-6.0 |
Loss of drying1) % | ≤10 | ≤15 |
Chloride % | ≤0.10 | ≤0.20 |
Sulphate | ≤0.05 | ≤0.05 |
Sulfur compound % | No reaction | No reaction |
Cyanide % | No reaction | No reaction |
Iron content % | ≤0.02 | ≤0.05 |
Acid-soluble ≤ % | ≤0.80 | - |
Ash ≤ % | ≤3.00 | ≤6.00 |
Uncarbonized matters % | No obvious coloring | No obvious coloring |
Heavy meta ≤ % | ≤0.003 | ≤0.003 |
Water Soluble zinc ≤ % | ≤0.005 | ≤0.005 |
Particle size (0.5-2.0mm) % | ≥80 | ≥80 |
1）Loss on drying is tested as packed | ||
Analysis methods：This series of products are tested as per GB/T 12496-1999. For external analysis methods, please refer to ASTM STANDARD FOR ACTIVATED CARBON & AWWA STANDARD FOR ACTIVATED CARBON
Packaging：10kg/carton
Manufacturing
