<![CDATA[Tlae effect of chemical concentration and method of bleaching on the wood quality i8 reported in thia paper. The mmpla material co,..;.tetl of 40 piet:u jeur4/ing wood (Partueriantha (alcataria (L.) Nisllen.) meauri"I J cm by 2 cm by 30 cm rapectiwly~ AU 1amplu UJmt divided into aeuen group& The /int three grou,,. were 1oaked in Ozalic acid and Sodium layd,._ib iolutlone of l" SS and B'A rapecti~ly. The aecond three ttrou'DI were aleo malled in. Hydrogen perozide and Sodium hydrozide eolutione of the above .concentration& The lat one group roae lmlalaed with 8<H> Hydro- gen perozide and 10~ Sodium hydrozide iolutione. Variable rapona oMrwd were brilhtnea, chemical compound penetration, occurrence of fuzzy grain and compreaion parallel to the grain. •The raulb ,..,led. that .ioalrlng of jeur4Ji1111 wood in Hydrogen perozide and Sodium hydrozide at 6~ concentra• tion ahowed the bat brWhtnea, a well a bruahi1111 with the mme chemical compound at 30CJ, and 1 ~ concentration retpeetively. The taJer018 •peMtration of tlaae chemieal compounda into wood aubdrwte roere J mm. M•anwhik; the eoaking method in O:callc acid and Sodium hydrozide decreaeedthe compreesionparallel to the grain aignificantly. p;,,,...thermore the chemical compou~ """d for bleaching the jeu.,,,ii11/l wood did not affect (uny grain defect.]]>
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