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ASTM D4903-99

(Test Method)

Standard Test Method for Total Solids and Water in Vegetable Tanning Material Extracts

Standard Test Method for Total Solids and Water in Vegetable Tanning Material Extracts

SCOPE
1.1 This test method is intended for use in determining the total solids and water in extracts of vegetable tanning materials. The test method is applicable to solutions of liquid, solid, pasty, and powdered extracts and to extracts of raw or spent materials.
1.2 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
09-May-1999
ICS
59.140.10 - Processes and auxiliary materials
Technical Committee
D31 - Leather
Drafting Committee
D31.01 - Vegetable Leather
Current Stage
Ref Project

Relations

Replaced By
ASTM D4903-99(2004) - Standard Test Method for Total Solids and Water in Vegetable Tanning Material Extracts
Effective Date
01-Apr-2004
Referred By
ASTM D4899-99(2020) - Standard Practice for Analysis of Vegetable Tanning Materials—General
Effective Date
10-May-1999
Referred By
ASTM D4905-99(2020) - Standard Practice for Preparation of Solution of Solid, Pasty and Powdered Vegetable Tannin Extracts
Effective Date
10-May-1999
Referred By
ASTM D6402-99(2020) - Standard Test Method for Determining Soluble Solids and Insolubles in Extracts of Vegetable Tanning Materials
Effective Date
10-May-1999
Referred By
ASTM D6408-99(2020) - Standard Test Method for Analysis of Tannery Liquors
Effective Date
10-May-1999
Referred By
ASTM D6405-99(2020) - Standard Practice for Extraction of Tannins from Raw and Spent Materials
Effective Date
10-May-1999
Referred By
ASTM D4902-99(2020) - Standard Test Method for Evaporation and Drying of Analytical Solutions
Effective Date
10-May-1999
Referred By
ASTM D6401-99(2020) - Standard Test Method for Determining Non-Tannins and Tannin in Extracts of Vegetable Tanning Materials
Effective Date
10-May-1999

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ASTM D4903-99 - Standard Test Method for Total Solids and Water in Vegetable Tanning Material ExtractsASTM D4903-99 - Standard Test Method for Total Solids and Water in Vegetable Tanning Material Extracts
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ASTM D4903-99 - Standard Test Method for Total Solids and Water in Vegetable Tanning Material Extracts
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Standards Content (Sample)


NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D 4903 – 99
Standard Test Method for
Total Solids and Water in Vegetable Tanning Material
Extracts
This standard is issued under the fixed designation D 4903; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Summary of Test Method
1.1 This test method is intended for use in determining the 3.1 An aliquot of the prepared analytical solution is pipetted
total solids and water in extracts of vegetable tanning materi- into an evaporating dish and evaporated to dryness in a forced
als. The test method is applicable to solutions of liquid, solid, air oven.
pasty, and powdered extracts and to extracts of raw or spent
4. Significance and Use
materials.
4.1 The test method is useful in determining the total solids
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the and water in analytical solutions.
responsibility of the user of this standard to establish appro-
5. Apparatus
priate safety and health practices and determine the applica-
5.1 Tannin Dish—Crystallizing dish, borosilicate glass, 50
bility of regulatory limitations prior to use.
mm tall, 70 mm outside diameter. The bottom corner shall be
2. Referenced Documents
rounded to a radius of 6 mm, the bottom shall be flat and not
cupped in the center, and the top edge shall be rounded and
2.1 ASTM Standards:
D 4901 Practice for Preparation of Solution of Liquid Veg- polished.
5.2 Pipet, 100-mL capacity, preferably with a wide orifice
etable Tannin Extracts
D 4902 Practice for Evaporation and Drying of Analytical approximately 2.4 mm ( ⁄32 in.) diameter and 15 to 25-s
delivery time.
Solutions
D 4905 Practice for Preparation of Solution of Solid, Pasty 5.3 Drying Oven—A forced-air convection oven (or
and Powdered Vegetable Tannin Extracts mechanical-convection draft oven) capable of maintaining a
temperature of 100 6 2.0° C.
D 6401 Test Method for Determining Non-Tannins and
Tannin in Extracts of Vegetable Tanning Materials 5.4 Thermometer—Accurate to 6 2.0° C, used to check and
monitor the oven set point.
D 6402 Test Methods for Determining Soluble Solids and
Insolubles in Extracts of Vegetable Tanning Materials 5.5 Dessicator—Any convenient form or size.
D 6404 Practice for Sampling of Vegetable Materials Con-
6. Test Specimen
taining Tannin
6.1 The specimen shall consist of 100 mL of a solution
D 6405 Practice for Extraction of Tannins from Raw and
prepared as described in Practices D 4901, D 4905, and
Spent Materials
D 6405.
2.2 ALCA Methods:
A20 Total Solids and Water
7. Procedure
7.1 Thoroughly mix the solution, prepared as described in
This test method is under the jurisdiction of ASTM Committee D-31 on Leather
Practices D 4901, D 4905, and D 6405, by inverting and
and is the direct responsibility of Subcommittee D31.01 on Vegetable Leather. This
shaking 8 to 10 times, taking care to ensure that all insoluble
test method has been adapted from and is a replacement for Method A20 of the
matter is uniformly dispersed and none left adhering to the
Official Methods of the American Leather Chemists Association.
Current edition approved May 10, 1999. Published August 1999. Originally
walls of the flask. Immediately, pour a 150-mL to 250-mL
published as D 4903–89. Last previous edition D 4903–89 (1995).
portion (approximately) into a bottle or other suitable con-
Annual Book of ASTM Standards, Vol 15.04.
3 tainer, stoppered or covered, and retain until the soluble solids
Official Methods of the American Leather Chemists Association. Available
and non-tannins are ready to be pipetted (see Practice D 6404).
from the American Leather Chemists Association, University of Cincinnati, P.O.
Box 210014, Cincinnati, OH 45221.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 4903
Where the analysis is being performed in a constant tempera- D 6405), two values for total solids will be obtained for each
ture r
...

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1.1 This test method covers determining the sugars present in vegetable tanning materials.  
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