Pulp bleaching agent FAS

white crystal powder

　　Pulp bleaching agent is one kind of new and excellent paper and pulp bleaching agent, it can be used in reduction bleaching and paper deink bleaching. Because of the high reducibility and excellent stability, it is quite suitable for high temperature continual bleaching. What’s more, it is very stable in air and can be used under the normal equipments and is also good for environment, without increasing the water pollution load, conforms to the requirement of environmental protection.

　　Purity: 99.0% min

　　Moisture: 0.05% max

　　Iron(Fe): 10ppm max

　　PH value: 5-6

　　*25kgs plastic bags (with two inner layers)

　　*25kgs kraft paper compound plastic bags

　　*50kgs fiber drums

　　*500kgs, 1000kgs containing bag

　　There is a excellent effect in reduction bleaching and paper deink bleaching in paper making industry.

        1) Conditions: temperature 60℃ min, pH10～11, the optimal dosage rate for FAS to caustic should be 2:1, retention time 30～60 minutes, bleaching equipment should be sealed.

        2) FAS powder should be dissolved in solution and filled into pulp under alkaline conditions.

        3) The optimal FAS dosage depends on nature of pulp, generally it is between 3~6 kg based on per ton of absolute dry pulp (0.3%~0.6%).

        1)TMP

              Generally single stage bleaching is employed，brightness gain exceeds 6%。

        2)DIP

              Generally employs two stages bleaching, (H2O2～FAS or FAS～H2O2). Mostly employs H2O2～FAS, brightness improved by 6% min. followed by peroxide bleaching.

　　The color of your pulp will not easy to change into yellow under a longer time after you used the pulp bleaching agent FAS.

Keep in a cool, ventilated and dry place. Avoid moisture and insolation. Keep away from oxidizing agents.