ASTM-D982 › Historical Revision Information
Standard Test Method for Organic Nitrogen in Paper and Paperboard
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Scope
1.1 This test method covers the determination of nitrogenous organic materials in paper and paperboard, which typically are used to reduce the thermal degradation of the cellulose in the paper and paperboard.
1.2 The nitrogen determination by this method does not include the nitrogen in nitro compounds, nitrates, nitrites, azo, hydrazine, cyanide, or pyridine ring-type compounds, none of which are normally found in paper and paperboard. There is no known modification of the method that is applicable to all nitrogenous compounds.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
Significance and Use
The purpose of this test method is to determine the amount of organic nitrogen present within a sample of electrical insulation paper or paperboard. Nitrogen content is used to determine if the paper or paperboard has been chemically treated to withstand higher than normal operating temperatures. Such a paper or paperboard is referred to in the industry as “thermally upgraded.” A paper or paperboard that is thermally upgraded can withstand higher operating temperatures and allow the electrical equipment to have a longer useful life span.
Keywords
nitrogen; paper; paperboard; Nitrogen; Paper; Paper and paperboard; Paperboard; ICS Number Code 85.060 (Paper and board)
To find similar documents by ASTM Volume:
10.01 (Electrical Insulation (I): D69 - D2484)
10.02 (Electrical Insulation (II): D2518 - latest)
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Document Number
ASTM-D982-05(2009)
Revision Level
2005 R09 EDITION
Status
Superseded
Modification Type
Reapproval
Publication Date
Dec. 1, 2009
Document Type
Test Method
Page Count
3 pages
Committee Number
D09.01