ASTM D4085-93(2013) PDF

Scope: 4.1 Manganese in pulp acts as a catalyst in oxidizing cellulose.

4.2 Iron in pulp can cause yellowness in rayon fibers and influence cellulose acetate plastics color. Iron also causes problems in photographic and blueprint papers.

4.3 Copper in pulp can act as a retardant in oxidizing cellulose and can affect viscose ripening. Copper interferes with the dye level of rayon fibers and influences cellulose acetate plastics color.

4.4 Calcium in pulps can cause problems in processing into acetate, rayon, cellophane, etc. Calcium can create undesirable deposits in viscose spinning and film casting operation. Calcium can influence viscosity control during cellulose acetate manufacture.

1.1 This test method covers the determination of the iron, copper, manganese, and calcium content of cellulose pulp from wood or cotton.

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

ASTM D4085-93(2013) Referenced Document

ASTM D1193 Standard Specification for Reagent Water*， 1999-04-20 Update
ASTM D1348 Standard Test Methods for Moisture in Cellulose*， 1994-04-20 Update
ASTM D3516 Standard Test Methods for Ashing Cellulose*， 2019-12-01 Update
ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method*， 1999-04-20 Update

2021 ASTM D4085-93(2021) Standard Test Method for Metals in Cellulose by Atomic Absorption Spectrophotometry
1993 ASTM D4085-93(2013) Standard Test Method for Metals in Cellulose by Atomic Absorption Spectrophotometry
1993 ASTM D4085-93(2008) Standard Test Method for Metals in Cellulose by Atomic Absorption Spectrophotometry
1993 ASTM D4085-93(2003) Standard Test Method for Metals in Cellulose by Atomic Absorption Spectrophotometry
1993 ASTM D4085-93(1997) Standard Test Method for Metals in Cellulose by Atomic Absorption Spectrophotometry