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Normas ASTM – AENOR
ASTM D3516-89(2006)

ASTM D3516-89(2006)

Standard Test Methods for Ashing Cellulose

Fecha:
2011-06-17 /Historical
Superseeded by:
Significance and Use:

Ash content gives an estimation of the inorganic content of cellulose samples. The presence of high levels of ash can be expected to be detrimental to the process of making cellulose derivatives. It also provides a rough estimate of silica content which can have a significant effect on the performance of filters in cellulose derivative manufacturing facilities.

Scope:

1.1 These test methods cover four ashing methods for cellulose. These are intended for use on unbleached and bleached cellulose in sheeted or bulk fiber form. Each one of the test methods has advantages, so that preference applications exist for all four.

1.2 The test methods appear as follows:

Sections
Test Method A-Ash in Cellulose at 575oC6 to 11
Test Method B-Sulfated Ash in Cellulose at 575oC12 to17
Test Method C-Ashing Cellulose by Schoniger Oxidation18 to 22
Test Method D-Wet Ashing of Cellulose for Inorganics23 to 29

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.4 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 determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see 20.6.1.

Keywords:
bleached; Schoniger oxidation; sulfated ash; wet ashing
51,73
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