1、Designation: D4899 99 (Reapproved 2016)Standard Practice forAnalysis of Vegetable Tanning MaterialsGeneral1This standard is issued under the fixed designation D4899; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last
2、revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice is intended for use in the chemical analysisof all vegetable tanning materials.1.2 The values stated in SI un
3、its are to be regarded asstandard. No other units of measurement are included in thisstandard.1.3 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 pra
4、ctices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D4900 Test Method for Lignosulfonates (Sulfite Cellulose)in Tanning ExtractsD4901 Practice for Preparation of Solution of Liquid Veg-etable Tannin ExtractsD4902 Test Method for E
5、vaporation and Drying of Analyti-cal SolutionsD4903 Test Method for Total Solids and Water in VegetableTanning Material ExtractsD4904 Practice for Cooling of Analytical SolutionsD4905 Practice for Preparation of Solution of Solid, Pastyand Powdered Vegetable Tannin ExtractsD6401 Test Method for Dete
6、rmining Non-Tannins and Tan-nin in Extracts of Vegetable Tanning MaterialsD6402 Test Method for Determining Soluble Solids andInsolubles in Extracts of Vegetable Tanning MaterialsD6403 Test Method for Determining Moisture in Raw andSpent MaterialsD6404 Practice for Sampling Vegetable Materials Conta
7、in-ing TanninD6405 Practice for Extraction of Tannins from Raw andSpent MaterialsD6406 Test Method for Analysis of Sugar in VegetableTanning MaterialsD6407 Test Method for Analysis of Iron and Copper inVegetable Tanning MaterialsD6408 Test Method for Analysis of Tannery LiquorsD6409 Practice for Col
8、or Tests with Sheepskin SkiverD6410 Test Method for Determining Acidity of VegetableTanning Liquors2.2 ALCA Methods:A1 Analysis of Vegetable Tanning MaterialsGeneral3A5 Extraction of Raw and Spent Materials3A6 Moisture in Raw and Spent Materials3A10 Preparation of Solution of Liquid Extracts3A11 Pre
9、paration of Solution of Solid, Pasty, and PowderedExtracts3A12 Cooling of Analytical Solutions3A13 Evaporation and Drying of Analytical Solutions3A20 Total Solids and Water3A21 Soluble Solids and Insolubles3A22 Non-Tannins and Tannin3A25 Analysis of Tannery Liquors3A30 Sugar in Tanning Materials3A31
10、 Copper and Iron in Tanning Materials3A40 Color Tests with Sheepskin Skiver3A50 Lignosulfates (Sulfite Cellulose)3A60 Official Certification3J10 Sampling of Vegetable Materials Containing Tannin32.3 Federal SpecificationDD-V-582 Volumetric Apparatus, Glass43. Significance and Use3.1 Vegetable tannin
11、g materials are natural products con-taining various substances of varying composition, concentra-tion and quality.1This practice is under the jurisdiction ofASTM Committee D31 on Leather andis the direct responsibility of Subcommittee D31.01 on Vegetable Leather. Thispractice has been adapted from
12、and is a replacement for Method A1 of the OfficialMethods of the American Leather Chemists Association.Current edition approved Sept. 1, 2016. Published September 2016. Originallyapproved in 1989. Last previous edition approved in 2009 as D489999 (2009).DOI: 10.1520/D4899-99R16.2For referenced ASTM
13、standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Official Methods of the American Leather Chemists Association. Availablefrom theA
14、merican Leather ChemistsAssociation (ALCA), University of Cincinnati,P.O. Box 210014, Cincinnati, OH 452210014.4Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.Copyright ASTM International, 100 Barr Harbor Drive, PO Bo
15、x C700, West Conshohocken, PA 19428-2959. United States13.2 The methods referenced are useful for analyzing andtesting vegetable tanning materials for moisture, water-extractable substances, cold-soluble fractions, tannins, non-tannins, acidity, tanning properties, the color of tanned leather,and th
16、e presence or absence of certain admixtures.4. Samples and Specimens4.1 The preparation of the composite sample of a vegetabletanning material for analysis purposes shall be as described inALCA Method J10.5. Apparatus and Reagents5.1 All volumetric glassware shall comply with FederalSpecification DD
17、-V-582.5.2 Unless otherwise specified, all reagents used in thechemical analyses shall be of certified ACS purity grade andcomply with the specifications recommended by the Commit-tee onAnalytical Reagents of theAmerican Chemical Society.55.3 The distilled water used in the chemical analysis shallha
18、ve a pH of not less than 5.5, nor more than 7.0, and shall givea residue of not more than 0.0005 g when 100 mLis evaporatedand dried in a platinum dish.5.4 General laboratory apparatus and reagents shall beavailable. (Special apparatus and reagents are described in theindividual methods.)6. Procedur
19、e6.1 Cover all funnels, collecting dishes, and other apparatusused during the analysis so as to prevent, or reduce to aminimum, any change in the concentration of solutions byevaporation of water.6.2 Measure all aliquots of analytical solutions, pipetted forthe determination of total solids, soluble
20、 solids, non-tannins, orother, at the same temperature within the range 23 to 25C asspecified in ALCA Methods A21 and A22.7. General Analytical Procedure for the Analysis ofVegetable Tanning Materials7.1 The following ASTM standards are applicable: TestMethods D4900, D4902, D4903, D6401, D6402, D640
21、3,D6406, D6407, D6408, and D6410, and Practices D4901,D4904, D4905, D6404, D6405, and D6409.7.2 The following ALCA Methods are applicable: A5, A6,A10, A11, A12, A13, A20, A21, A22, A25, A30, A31, A40,A50, A60, J10.8. Keywords8.1 tannin; tannin analysis; vegetable tannin analysis; veg-etable tanninsA
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25、e 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 be obtained by contacting ASTM at the aboveaddress o
26、r at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ Chemical Society, 1155 16th St. NW, Washington, DC 20036.D4899 99 (2016)2
