ASTM D6402-1999(2004) Standard Test Method for Determing Soluble Solids and Insolubles in Extracts of Vegetable Tanning Materials《植物性单宁材料提取中测定可溶固体和非溶解物的标准试验方法》.pdf
《ASTM D6402-1999(2004) Standard Test Method for Determing Soluble Solids and Insolubles in Extracts of Vegetable Tanning Materials《植物性单宁材料提取中测定可溶固体和非溶解物的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D6402-1999(2004) Standard Test Method for Determing Soluble Solids and Insolubles in Extracts of Vegetable Tanning Materials《植物性单宁材料提取中测定可溶固体和非溶解物的标准试验方法》.pdf(3页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D 6402 99 (Reapproved 2004)Standard Test Method forDetermining Soluble Solids and Insolubles in Extracts ofVegetable Tanning Materials1This standard is issued under the fixed designation D 6402; the number immediately following the designation indicates the year oforiginal adoption or,
2、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 This test method is intended for use in determining thequantity of soluble solid
3、s and insolubles in solutions of tanninextracts, water extracts of vegetable tanning materials, ortanning liquors. This test method is applicable to the analysisof liquid, solid, pasty, and powdered tannin extracts and to thewater extracts of raw or spent materials.1.2 The values stated in SI units
4、are to be regarded as thestandard.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 practices and determine the applica-bility of regulatory limita
5、tions prior to use.2. Referenced Documents2.1 ASTM Standards:2D 4901 Practice for Preparation of Solution of Liquid Veg-etable Tannin ExtractsD 4902 Test Method for Evaporation and Drying of Ana-lytical SolutionsD 4903 Test Method for Total Solids and Water in VegetableTanning Material ExtractsD 490
6、5 Practice for Preparation of Solution of Solid, Pasty,and Powdered Vegetable Tannin ExtractsD 6403 Test Method for Determining Moisture in Raw andSpent MaterialsD 6405 Practice for Extraction of Tannins from Raw andSpent Materials2.2 ALCA Methods:A21 Soluble Solids and Insolubles33. Terminology3.1
7、Definitions:3.1.1 insolublesnon-volatile materials present in tanninextracts and raw or spent materials that are dissolved orsuspended in water and do not pass through a filtering processdescribed in this method.3.1.2 soluble solidsnon-volatile materials present in tan-nin extracts and raw or spent
8、materials that are dissolved orsuspended in water and pass through a filtering processdescribed in this method.4. Summary of Test Method4.1 An aliquot of the analytical solution prepared fromtannin extracts (Practices D 4901 or D 4905) or the waterextract from raw or spent materials (Practice D 6405
9、) is driedovernight in a forced-air oven (Test Method D 4902) and thequantity of solid residue remaining is determined and used tocalculate the total solids for that sample (Test Method D 4903).Another aliquot of the same solution is passed through aspecified filtering procedure and the quantity of
10、solid residueremaining in the filtrate is determined and used to calculate thesoluble solids for that sample. The difference between the totalsolids and the soluble solids is defined as the insolubles for thatsample.5. Significance and Use5.1 This test method is used to determine the proportion ofth
11、e total solids which are soluble solids and that proportionwhich are insoluble solids in a solution of tannin extract or inthe water extract from raw or spent materials prepared fortannin analysis.5.2 The specimens are aliquots from the analytical solutionsprepared from tannin extracts or the water
12、extract solutionsprepared from raw or spent materials.1This test method is under the jurisdiction of ASTM Committee D31 on Leatherand is the direct responsibility of Subcommittee D31.01 on Vegetable Leather. Thistest method has been adapted from and is a replacement for Method A21 of theOfficial Met
13、hods of the American Leather Chemists Association.Current edition approved April 1, 2004. Published May 2004. Originallyapproved in 1999. Last previous edition approved in 1999 as D 6402 99.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at servi
14、ceastm.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 the American Leather Chemists Association, University of Cincinnati, P.O.Box 210014, Cincinna
15、ti, OH 45221-0014.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.3 The soluble solids are defined as the portion of the totalsolids which are dissolved in the water and pass through a filterprepared by depositing a layer of Kaolin
16、 paste onto a standardfilter paper.5.4 The insolubles are defined as the portion of the totalsolids which do not pass through the standard filter paperprepared with the layer of Kaolin paste.5.5 The results of this test method are dependent on a greatmany variables but particularly upon:5.5.1 The te
17、mperature conditions under which the solutionswere prepared and stored and the temperature at which thecurrent analysis is performed;5.5.2 The uniformity and consistency of the Kaolin pastelayer deposited onto the filter paper;5.5.3 The rate of solution run-out from the pipette; etc. It is,therefore
18、, essential that the method be followed exactly inorder to obtain reproducible results both among specimenswithin a laboratory and for analyses between laboratories.6. Apparatus and Reagents6.1 Tannin Dish, crystallizing dish, borosilicate glass, 50mm tall, 70 mm outside diameter. The bottom corner
19、shall berounded to a radius of 6 mm, the bottom shall be flat and notcupped in the center, and the top edge shall be rounded andpolished.6.2 Watch Glass, a suitable size (approximately 150 mmdiameter) to be used as a cover for the funnel and filter paperand a suitable size (75 mm) to be used as a co
20、ver for the tannindishes.6.3 Pipet, 100 mL capacity, preferably with a wide orificeapproximately 2.4 mm (332 in.) diameter and 15-25 seconddelivery time.6.4 Graduated Cylinder, standard laboratory grade with atleast 225 mL capacity.6.5 Glass Rods, soft glass stirring rods with rounded,fire-polished
21、ends.6.6 Filter Paper4, 21.5 cm diameter, pleated to contain 32evenly divided creases.6.7 Funnel, 100-125 mm top diameter, 60 angle bowl, and150 mm stem length.6.8 Kaolin5, acid-washed kaolin clay which conforms to thefollowing specifications:6.8.1 Suspend 1.0 g kaolin in 100 mL distilled water. The
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
5000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ASTMD640219992004STANDARDTESTMETHODFORDETERMINGSOLUBLESOLIDSANDINSOLUBLESINEXTRACTSOFVEGETABLETANNINGMATERIALS
链接地址:http://www.mydoc123.com/p-522413.html