ASTM D 1926 : 2000 : R2011

Name: ASTM D 1926 : 2000 : R2011
Brand: ASTM
Price: 108.03 AUD

Superseded

Standard Test Methods for Carboxyl Content of Cellulose

Available format(s)

Hardcopy , PDF

Superseded date

12-08-2020

Language(s)

English

Published date

01-06-2011

Publisher

American Society for Testing and Materials

CONTAINED IN VOL. 06.03, 2017 Defines the determination of the carboxyl content, or ion-exchange capacity, of cellulose from any source.

1.1 These test methods cover the determination of the carboxyl content, or ion-exchange capacity, of cellulose from any source. Two test methods are described, the sodium chloride-sodium bicarbonate method (1) and the methylene blue method (2). The test methods must be used within their limitations, and it must be recognized that there is no way of determining the accuracy of any method for the determination of carboxyl. The precision of the sodium chloride-sodium bicarbonate method is low in the lower range of carboxyl values. The methylene blue method can be used over the whole range of carboxyl values; it is especially useful in the low range. It is not applicable to the determination of carboxyl in soluble carbohydrate material. Although these test methods may be used to determine the ion-exchange capacity of unbleached pulps, the residual lignin will cause an undetermined error, especially the sulfonic acid groups in unbleached sulfite pulps (3).

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.

Committee	D 01
DocumentType	Test Method
Pages	4
ProductNote	Reconfirmed 2011
PublisherName	American Society for Testing and Materials
Status	Superseded
Supersedes	ASTM D 1926 : 2000 : R2006

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