Table 1.
Chemical components concentration of impregnant agents

No	Chemical components	Impregnant agents concentration (%)
		WV	8% AA + DW + 4% Bo	8% AA + WV + 4% Bo
		1	Phenolic groups
	• Phenol, 2,6-dimethoxy	20.84	-	23.45
	• Phenol, 2,5-dimethyl	2.15		4.16
	• 2-Hydroxyphenol	8.25	-	10.34
	• Phenol, 2-methoxy-4-methyl	7.22	-	9.15
	• Phenol, 2-ethyl	1.60	-	3.16
	• Phenol, 4-(2-aminopropyl)	0.86	-	2.22
2	Carboxylic groups
	• 2-Propenoic acid, 3-phenyl	19.72	17.5	21.74
	• Benzenepropanoic acid, methyl ester	7.79	5.25	9.15
	• Hexadecanoic acid, methyl ester	4.78	3.00	6.91
	• Octadecanoic acid, methyl ester	3.25	4.43	0.34
	• 3-amino-2-benzyl-butanoic acid	1.34	0.62	2.49
	• Pterine-6-carboxylic acid	1.36	0.46	2.04

Remarks: WV=wood vinegar; AA=animal adhesive; DW=distilled water; Bo=borate.