The objective of the research was to know the difference of chemical content for Acacia crassicarpa on different level of age.
The TAPPI Standard was used to chemical content analysis such as, ashes, lignin, holocellulose, cellulose, hemicellulose, and extractiveand the ASTM standard for tannin analysis. The data analysis was used Random Complete Design (RCD) with pattern factorial 3 x 3, and 3 replication. Beside that, Tukey procedure used to test of the average.
Generally the factor of age, the stem portion, and interaction to Acacia mangium or Acacia crassicarpa, are significantly difference for chemical woods content in ashes, lignin, holocellulose, cellulose, hemicellulose, extractive, and tannin. With difference test the average value, with two year age difference (6, 8, and 10-years old) and the stem portion (top, middle, and base of tree) show value difference. The average chemical content for Acacia crassicarpa are: 6-Year old : Ashes = 0,1933%, Lignin = 27,8467%, Holocellulose = 63,1489%, Cellulose = 31,6007%, Hemicellulose = 31,5461%, Tannin = 10,6553%, and extractive, are : Cold water = 4,0611%, Hot water = 5,4283%, Alkohol-Benzena = 5,0067%, and NaOH = 14,4683%. 8-Year old : Ashes = 0,2267%, Lignin = 29,3767%, Holocellulose = 65,2322%, Cellulose = 34,3741%, Hemicellulose = 30,8582%, Tannin =10,1758%, and ekstraktive, are : Cold water = 3,4350%, Hot water = 4,7739%, Alkohol-Benzena =4,5133%, and NaOH =14,5889%. 10-Year old :Ashes = 0,1789%, Lignin = 30,6011%, Holocellulose = 65,0822%, Cellulose =35,4896%, Hemicellulose = 29,5926%, Tannin = 7,8718%, and extraktif are : Cold water = 3,7800%, Hot water = 4,9400%, A llcohol-Benzena = 5,0917%, and NaOH = 14,6500%. The Acacia crassicarpa were already used as raw material for pulp and paper on 6 and 10 year, respectively, but the quality is not fain good because they need much chemical material for lignin bleaching, construction wood, plywood, laminated wood, particle board, etc. and the bark of these tree can produce tannin for : tanner, glue, etc.
Keywords : chemical content, acacia crassicarp
