ASTM E2403-04 - 1.10.2004
 
1. Scope

1.1 This standard describes the determination of sulfated ash content (sometimes called residue-on-ignition) of organic materials by thermogravimetry. The method converts common metals found in organic materials (such as sodium, potassium, lithium, calcium, magnesium, zinc, and tin0 into their sulfate salts permitting estimation of their total content as sulfates or oxides. The range of the test method is from 0.1 to 100 % metal content.

1.2 SI values are the standards.

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 appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.

 
2. Referenced Documents

The United States Pharmacopeia XXII

and The National Formulary XVII, United States Pharmacopeial Convention, Rockville, MD, 1990, Section 281, p. 1527

E2040-19

Standard Test Method for Mass Scale Calibration of Thermogravimetric Analyzers

D874-23

Standard Test Method for Sulfated Ash from Lubricating Oils and Additives

D914-12(2019)

Standard Test Methods for Ethylcellulose

D3516-89(2019)e1

Standard Test Methods for Ashing Cellulose (Includes all amendments and changes 12/23/2019).

E473-23b

Standard Terminology Relating to Thermal Analysis and Rheology (Includes all amendments and changes 10/5/2023).

E1131-20

Standard Test Method for Compositional Analysis by Thermogravimetry

E1142-23b

Standard Terminology Relating to Thermophysical Properties (Includes all amendments and changes 10/5/2023).

E1582-21

Standard Test Method for Temperature Calibration of Thermogravimetric Analyzers