GB/T 1547-2004 "Pulp - Determination of permanganate number" specifies the method for determining the permanganate number of pulp. It is applicable to chemical pulps with a lignin content of less than 6% and a permanganate number below 35. By reacting potassium permanganate with the reducing substances in the pulp and titrating the excess potassium permanganate with sodium thiosulfate, the value is calculated. This standard replaces GB/T 1547-1989 and is used to evaluate the effectiveness of pulp cooking and bleaching.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | Y30 | ICS | 85.040 |
| Release Date | 2004-03-15 00:00:00 | Implementation Date | 2004-10-01 00:00:00 |