1、Designation: D 1110 84 (Reapproved 2007)Technical Association of Pulp and Paper IndustryStandard Method T 207 om-81Standard Test Methods forWater Solubility of Wood1This standard is issued under the fixed designation D 1110; the number immediately following the designation indicates the year oforigi
2、nal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 These test methods2cover the determination of thewater solubili
3、ty of wood. Two methods are given, as follows:1.1.1 Method ACold-Water SolubilityThis method pro-vides a measure of the tannins, gums, sugars, and coloringmatter in the wood.1.1.2 Method BHot-Water SolubilityThis method pro-vides a measure of the tannins, gums, sugars, coloring matter,and starches i
4、n the wood.1.2 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. S
5、ignificance and Use2.1 Cold water removes a part of such extraneous materialsas tannins, gums, sugars, and coloring matters. Hot waterremoves these plus the starches.METHOD ACOLD-WATER SOLUBILITY3. Apparatus3.1 Filtering CruciblesAlundum or fritted-glass cruciblesof coarse porosity will be required.
6、3.2 Filtering FlaskAsuction filtering flask, equipped witha rubber flange for the crucible and funnel, shall be provided.4. Test Specimen4.1 The test specimen shall consist of2gofair-driedsawdust that has been ground to pass a 425-m sieve and beretained on a 250-m sieve.5. Procedure5.1 Place a 2-g t
7、est specimen, the moisture content of whichhas been previously determined, in a 400-mL beaker, and coverwith 300 mL of distilled water. Let this mixture digest at atemperature of 23 6 2C, with frequent stirring, for 48 h.5.2 Filter the material on an Alundum or fritted-glasscrucible, using suction,
8、wash with cold distilled water, and dryto constant weight at 100 to 105C. Drying usually requiresapproximately 4 h. Place the crucible in a loosely stopperedweighing bottle, cool in a desiccator, and weigh.6. Report6.1 Report the results as percentage of matter soluble in coldwater, on the moisture-
9、free basis, calculated as follows:Cold water solubility, % 5 W12 W2!/W1# 3 100 (1)where:W1= weight of moisture-free specimen used in 5.1, andW2= weight of dried specimen after extraction with coldwater (5.2).METHOD BHOT-WATER SOLUBILITY7. Apparatus7.1 Digestion ApparatusA 200-mL Erlenmeyer flask pro
10、-vided with a reflux condenser shall be used.7.2 Water Bath, so constructed that the water can bemaintained at boiling temperature and at a constant-level justabove the solution in the flask.7.3 Filtering Crucible and Filtering FlaskSee Section 3.8. Test Specimen8.1 See Section 4.9. Procedure9.1 Pla
11、ce a 2-g test specimen, the moisture content of whichhas been previously determined, and 100 mL of distilled waterin the Erlenmeyer flask and attach the reflux condenser. Placethe flask in the boiling water bath, with the solution in the flaskjust below the level of the water in the bath, and heat g
12、ently for3h.9.2 Filter the contents of the flask on a tared Alundum orfritted-glass crucible, using suction, wash with hot water, and1These test methods are under the jurisdiction of ASTM Committee D07 onWood and are the direct responsibility of D07.01 on Fundamental Test Methods andProperties.Curre
13、nt edition approved April 1, 2007. Published April 2007. Originallyapproved in 1950. Last previous edition approved in 2001 as D 1110 84 (2001).2For further information on these test methods, the following references may beconsulted:Schorger, A. W., “Chemistry of Cellulose and Woods,” 1926, p. 506,
14、McGraw-Hill, NY.Hawley and Wise, “Chemistry of Wood,” 1926, p. 134, Chemical Catalog Co.,NY.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.dry to constant weight at 100 to 105C. Place the crucible in aloosely stoppered weighing bott
15、le, cool in a desiccator, andweigh.10. Report10.1 Report the results as percentage of matter soluble inhot water, on the moisture-free basis, calculated as follows:Hot water solubility, % 5 W12 W2!/W1# 3 100 (2)where:W1= weight of moisture-free specimen used in 9.1, andW2= weight of dried specimen a
16、fter extraction with hotwater (9.2).11. Precision and Bias311.1 All data obtained in one laboratory by testing 20woods.Repeatability,as Solubility, %Repeatability,% of SolubilityCold (1.1 to 6.3 %) 0.14 5.7Hot (1.6 to 9.0 %) 0.15 3.811.2 Reproducibility and bias are unknown.12. Keywords12.1 cold wat
17、er solubility; hot water solubility; watersolubilityASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rig
18、hts, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for
19、 revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing
20、 you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may
21、 be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).3Data in this section obtained from the Technical Association of the Pulp andPaper Industry, P.O. Box 105113, Atlanta, GA 30348.D 1110 84 (2007)2
