Charcoal Technical specifications of vegetable charcoal Maximum humidity 6% Carbonaceous string 75% Volatility max 20% Ashes max 6% Silk 5% Calorific power 8000ª k/cal Sieve test 20/80 or 30/60 2, 2, 5 kgs, 3, 5, 10, 15 and 20 kgs Charcoal can packed in small bags of paper kraft and polypaper bags. Big bags such as 20 kgs and 15 kgs can packed in polipropylene laminated bags