ASTM D4899-99(R2020) pdf free download

ASTM D4899-99(R2020) pdf free download.Standard Practice for Analysis of Vegetable Tanning Materials—General
1. Scope
1.1 This practice is intended for use in the chemical analysis of all vegetable tanning materials. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro- priate safety, health, and environmental practices and deter- mine the applicability ofregulatory limitations prior to use. 1.4 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards: 2 D4900 Test Method for Lignosulfonates (Sulfite Cellulose) in Tanning Extracts D4901 Practice for Preparation of Solution of Liquid Veg- etable Tannin Extracts D4902 Test Method for Evaporation and Drying ofAnalyti- cal Solutions D4903 Test Method for Total Solids and Water in Vegetable Tanning Material Extracts D4904 Practice for Cooling of Analytical Solutions D4905 Practice for Preparation of Solution of Solid, Pasty and Powdered Vegetable Tannin Extracts D6401 Test Method for Determining Non-Tannins and Tan- nin in Extracts of Vegetable Tanning Materials D6402 Test Method for Determining Soluble Solids and Insolubles in Extracts of Vegetable Tanning Materials D6403 Test Method for Determining Moisture in Raw and Spent Materials D6404 Practice for Sampling Vegetable Materials Contain- ing Tannin D6405 Practice for Extraction of Tannins from Raw and Spent Materials D6406 Test Method for Analysis of Sugar in Vegetable Tanning Materials D6407 Test Method for Analysis of Iron and Copper in Vegetable Tanning Materials D6408 Test Method for Analysis of Tannery Liquors D6409 Practice for Color Tests with Sheepskin Skiver 2.2 ALCA Methods: A1 Analysis of Vegetable Tanning Materials—General 3 A5 Extraction of Raw and Spent Materials 3 A6 Moisture in Raw and Spent Materials 3 A10 Preparation of Solution of Liquid Extracts 3 A11 Preparation of Solution of Solid, Pasty, and Powdered Extracts 3 A12 Cooling of Analytical Solutions 3 A13 Evaporation and Drying of Analytical Solutions 3 A20 Total Solids and Water 3 A21 Soluble Solids and Insolubles 3 A22 Non-Tannins and Tannin 3 A25 Analysis of Tannery Liquors 3 A30 Sugar in Tanning Materials 3 A31 Copper and Iron in Tanning Materials 3 A40 Color Tests with Sheepskin Skiver 3 A50 Lignosulfates (Sulfite Cellulose) 3 A60 Official Certification 3 J10 Sampling of Vegetable Materials Containing Tannin 3 2.3 Federal Specification DD-V-582 Volumetric Apparatus, Glass
3. Significance and Use
3.1 Vegetable tanning materials are natural products con- taining various substances of varying composition, concentra- tion and quality. 3.2 The methods referenced are useful for analyzing and testing vegetable tanning materials for moisture, water- extractable substances, cold-soluble fractions, tannins, non- tannins, acidity, tanning properties, the color of tanned leather, and the presence or absence of certain admixtures.
4. Samples and Specimens
4.1 The preparation of the composite sample of a vegetable tanning material for analysis purposes shall be as described in ALCA Method J10.
5. Apparatus and Reagents
5.1 All volumetric glassware shall comply with Federal Specification DD-V-582. 5.2 Unless otherwise specified, all reagents used in the chemical analyses shall be of certified ACS purity grade and comply with the specifications recommended by the Commit- tee onAnalytical Reagents ofthe American Chemical Society. 5 5.3 The distilled water used in the chemical analysis shall have a pH ofnot less than 5.5, nor more than 7.0, and shall give a residue ofnot more than 0.0005 g when 100 mL is evaporated and dried in a platinum dish.