| 配方类型： |
PAPER |
| 配方说明： |
Bleaching Wood Pulp (U.S. Patent 2,797,1,45) |
| 配制方法： |
Add to ground wood pulp, at about 176'F. and 3% consistency, 0.1% of the trisodium salt of ethylenediamine tetraacetic acid followed by 1% of an aqueous solution of sodium hydrosulfite, by weight of the dry pulp.
During the additions, agitate the pulp vigorously. |
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