Significance and Use
The results of this test are used for calculating the total solids in the sample; and, by common usage, all materials volatile at this test temperature are designated as moisture.
Moisture analysis (along with residue on ignition) is a measure of the amount of active polymer in the material and must be considered when determining the amount of hydroxypropylcellulose to use in various formulations.
1.1 These test methods cover the testing of hydroxypropylcellulose.
1.2 The test procedures appear in the following order:
| ||Moisture|| 4-9|
| || Viscosity||10-16|
| ||pH|| 17-21|
| || Residue on Ignition|| 22-28|
| || Hydroxypropoxy Content|| 29-36|
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 specific hazard statements, see 26.6.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D3876 Test Method for Methoxyl and Hydroxypropyl Substitution in Cellulose Ether Products by Gas Chromatography
E70 Test Method for pH of Aqueous Solutions With the Glass Electrode
hydroxypropoxy content; hydroxypropylcellulose; moisture; pH; residue on ignition; viscosity; Acidity, alkalinity, pH--paints/related coatings/materials; pH--paints/related coatings/applications; Viscosity--paints/related coatings/materials; Brookfield viscometer; Hydroxypropoxy content; Hydroxypropylcellulose; Ignition residues; Residue;
ICS Number Code 85.040 (Pulps)
ASTM International is a member of CrossRef.
Citing ASTM Standards
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