ASTM D1619 Standard Test Methods for Carbon Black - Determination of Sulfur Content

The ASTM D1619 test covers the determination of the sulfur content of carbon black. The total sulfur content of a carbon black is useful in calculations to reconstruct a rubber composition from analytical data.

The ASTM D1619 test covers two test methods:

• Method A: High Temperature Combustion with Infrared Absorption Detection Procedures
• Method B: X-Ray Fluorescence

Values ​​stated in SI units should be accepted as standard. No other units of measurement are included in this standard.

This standard does not purport to address all, if any, safety concerns associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health and environmental practices and to determine the applicability of regulatory restrictions prior to use.

Purity of Reagents: Reagent class chemicals will be used in all tests. Unless otherwise noted, all reagents are intended to conform to the specifications of the American Chemical Society's Committee on Analytical Reagents, where such specifications are available. 6 Other grades may be used, provided that the reagent is first determined to be correct. The accuracy of the determination
It must be of high enough purity to allow its use without reducing it.

Water Purity: Unless otherwise stated, references to water are to be understood as reactive water conforming to Specification D 1193.

ASTM D1619 Test Procedure

The sample is burned in a tube furnace at a minimum operating temperature of 1350°C in a stream of oxygen to oxidize the sulfur. Moisture and particles are removed from the gas by traps filled with anhydrous magnesium perchlorate. The gas stream is passed through a cell where the sulfur dioxide is measured by an infrared (IR) absorption detector. Sulfur dioxide absorbs IR energy at a precise wavelength within the IR spectrum. Energy is absorbed as the gas passes through the cell body where IR energy is transmitted. So in the detector
less energy is taken.

All other IR energy is eliminated from reaching the detector by a sensitive wavelength filter. Therefore, the absorption of IR energy can only be attributed to sulfur dioxide, whose concentration is proportional to the change in energy in the detector. A cell is used as both a reference and measuring chamber.

Total sulfur dioxide as sulfur is determined continuously. Therefore, it must be calibrated by the device. This test method should be automatically calibrated using standard reference and sulfur analyzers equipped to perform commercially available prior processes.

Our organization also provides testing services to businesses within the framework of laboratory testing services, within the scope of ASTM D1619 Standard Test Methods for Carbon Black - Determination of Sulfur Content.