SITCSection 2

Unbleached Coniferous Chemical Wood Pulp, Soda or Sulfate (Non-Dissolving)

Name: Unbleached Coniferous Chemical Wood Pulp, Soda or Sulfate (Non-Dissolving) (SITC 25141) -- U.S. Import Data
Creator: U.S. Census Bureau
License: https://www.census.gov/about/policies/open-gov/open-data.html

SITC 25141Basic heading5-digit

U.S. imports · July 2026: $11.9M; YTD $59.8M

U.S. exports · July 2026: $6.6M

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Balance · July 2026: Loading the trade balance

U.S. imports of unbleached coniferous chemical wood pulp, soda or sulfate (non-dissolving) (SITC 25141) totaled $11.9M in July 2026, traded with 4 countries.

Unbleached Coniferous Chemical Wood Pulp, Soda or Sulfate (Non-Dissolving) imports of $11.9M in July 2026 ran 39% above the year-to-date monthly average of $8.5M.

Last updated: July 2026 data

Unbleached coniferous kraft pulp — the workhorse of the soda/sulfate process applied to softwood species like pine and spruce — delivers the long fiber length and high tensile strength that make it indispensable for linerboard, sack kraft, and multi-wall bag paper. Its characteristic brown color reflects the absence of a bleaching stage, which also preserves more of the fiber's native strength. Because coniferous fiber length is a key performance driver for packaging grades, buyers specify species mix and kappa number (residual lignin) as part of purchase contracts.

AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.

164 shipments/mo

12-month trend

ImportsExports

Imports

$11.9MYoY · Pro

Exports

$6.6MYoY · Pro

12-mo low · imports

YoY · Pro

$14.3M$0

June 2025December 2025July 2026

Through July 2026. Source: U.S. Census Bureau.

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Basic heading 55 of 239 in section 2

Share of section 2 imports0.32%

Basic heading 25141 · $11.9M of $3.8B

Where it comes from, where it lands, what it pays

Imports · July 2026

Countries

origin

Canada and Chile together supply 86% of it.

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Districts

customs district

Census does not publish district detail for this classification system.

States

destination

Census does not publish state detail for this classification system.

Ports

entry

Census does not publish port detail for this classification system.

Frequently Asked Questions

What is kappa number and why do buyers of unbleached kraft pulp specify it?

Kappa number measures residual lignin content in the pulp after cooking. A lower kappa number indicates more complete delignification, which affects the pulp's bleachability and strength properties. For unbleached grades used in packaging, buyers specify kappa number to ensure consistent bonding strength and to predict how the pulp will perform on the paper machine.

How does coniferous fiber length affect end-product performance compared to hardwood pulp?

Coniferous (softwood) fibers are significantly longer than hardwood fibers, which translates into superior tensile and tear strength in the finished sheet. This makes unbleached coniferous kraft the preferred furnish for demanding packaging applications like grocery sacks, cement bags, and heavy-duty linerboard, where hardwood pulp alone would not meet strength requirements.