Sulfite Chemical Woodpulp, Dissolving Grades
Sulfite process chemical woodpulp with ≥88% insoluble fraction and ash ≤0.15%, used in high-purity applications like cellulose derivatives. HTS 4702.00.00 covers this due to strict chapter note criteria for dissolving grades. Commonly sourced from beech or spruce for acetate film production.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If sulfite pulp failing ash or solubility tests
Non-dissolving sulfite woodpulp for paper goes to 4703, lacking required purity per Chapter 47 note.
If semi-chemical sulfite process
Semi-chemical pulps are mechanically enhanced, not pure chemical dissolving grades.
If for non-coniferous sulfite pulp in bulk paper production
End-use and lower purity shift to general chemical woodpulp category.
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Import Tips & Compliance
• Mandatory ash content certification ≤0.15% for sulfite pulp; test both solubility and ash to meet dual criteria
• Declare production process explicitly on commercial invoice to distinguish from soda/sulfate variants
Related Products under HTS 4702.00.00
Alpha Pulp Dissolving Grades (Pine)
Pine softwood alpha pulp with 96% cellulose for non-woven fabrics via viscose process. HTS 4702.00.00 due to exceeding solubility thresholds for chemical dissolving applications. Key raw material for medical disposables.
Cellophane Dissolving Pulp
High-tenacity pulp for cellophane film production, sulfate process. HTS 4702.00.00 for film-grade dissolving properties.
Dissolving Pulp for Cellulose Acetate Tow
Pulp for acetate tow in cigarette filters, meeting strict purity. Under 4702.00.00.
Spruce Sulfite Dissolving Pulp
Spruce-based sulfite pulp with ultra-low ash for specialty chemicals.
Beechwood Dissolving Pulp
Beech hardwood sulfite dissolving grade for ethers.
High-Brightness Dissolving Softwood Pulp
95+ brightness softwood for premium acetate.