These test methods cover the testing of hydroxypropyl methylcellulose. The test methods are as follows: moisture; ash; chlorides; alkalinity; iron; heavy metals; methoxyl content; hydroxyproproxyl content; viscosity; pH; solids; and density.
Область применения1.1 These test methods cover the testing of hydroxypropyl methylcellulose.
1.2 The test procedures appear in the following order:
Sections
Moisture
4 to 6
Ash (as Sulfate)
7 to 10
Chlorides (as NaCl)
11 to 14
Alkalinity (as Na2CO3)
15 to 18
Iron
19 to 24
Heavy Metals
25 to 29
Methoxyl Content
30 to 35
Hydroxypropoxyl Content
36 to 41
Viscosity
42 to 46
pH
47
Solids
48 to 51
Density
52 to 56
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see 33.5.1.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.