Tender For The Supply Of Lignin (Bio-Derived Materials) Specifications For Lignin: High Purity - Alkali Lignin-Sigma Aldrich Appearance (Color) - Light Brown To Dark Brown Appearance (Form) - Powder Particle Size Range - 20 μm - 250 μm Density - 1,3 g/cm3 At 25 °C Infrared Spectrum Conforms To Structure Sulfur - Nil pH: 5.5 - 7.5 Should Be Thermally Stable Upto 615° Upon Purging In Inert Atmosphere (TGA)
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