HS Code 39.12 – Cellulose and its chemical derivatives, n.e.c. or included, in primary forms

HS code 3912 is a 4-digit heading in the Harmonized System that covers: Cellulose and its chemical derivatives, n.e.c. or included, in primary forms. Heading 3912 encompasses cellulose and its diverse chemical derivatives when presented in primary forms within international trade. This classification is crucial for importers, exporters, and compliance professionals dealing with a wide array of industrial polymers. The 'primary forms' designation is key, referring to raw materials such as liquids, pastes, powders, granules, flakes, blocks, lumps, and similar bulk presentations, not yet fashioned into finished articles. This heading specifically covers chemically altered cellulose, distinguishing it from natural, unmodified cellulose (typically found in Chapters 47 or 48). The scope includes cellulose ethers (like methylcellulose, ethylcellulose, carboxymethylcellulose, hydroxypropyl methylcellulose) and cellulose esters (such as cellulose acetate, cellulose nitrate, cellulose butyrate). These derivatives are vital across numerous sectors due to their unique properties, including thickening, binding, film-forming, and solubility characteristics. For instance, cellulose acetate is widely used in textiles and plastics, while various cellulose ethers are indispensable in pharmaceuticals, food products, and construction materials. Accurate classification under 3912 is paramount for determining correct tariff rates, adhering to import/export regulations, and ensuring eligibility for specific trade agreements. It sits within Chapter 39, which covers 'Plastics and articles thereof,' highlighting the polymeric nature of these materials. Historically, the trade in cellulose derivatives has grown significantly with the expansion of the chemical, pharmaceutical, and food processing industries, making it a critical component of global supply chains for specialized ingredients and intermediate products. Understanding the boundaries of 'primary forms' and 'chemical derivatives' is essential to avoid misclassification and ensure smooth customs clearance.

Cellulose acetate flakes, Cellulose nitrate in primary forms, Ethylcellulose granules, Hydroxypropyl methylcellulose (HPMC) powder, Carboxymethylcellulose (CMC) sodium salt powder, Methylcellulose powder, Hydroxyethyl cellulose (HEC) powder, Cellulose acetate butyrate (CAB) pellets, Cellulose acetate propionate (CAP) granules, Microcrystalline cellulose (MCC) powder, Regenerated cellulose solutions, Cellulose xanthate, Cellulose esters n.e.c. in primary forms, Cellulose ethers n.e.c. in primary forms, Nitrocellulose chips, Cellulose triacetate powder, Cellulose propionate granules, Carboxymethyl ethyl cellulose, Hydroxypropyl cellulose (HPC) powder, Ethyl hydroxyethyl cellulose, Cellulose acetate phthalate, Powdered cellulose, Alkyl cellulose ethers, Mixed cellulose ethers, Modified starches (if cellulose-based derivatives)

A common misclassification error involves confusing cellulose derivatives in primary forms with natural cellulose (e.g., wood pulp, cotton linters) which typically fall under Chapter 47 (Pulp of wood or other fibrous cellulosic material) or Chapter 48 (Paper and paperboard) if it's paper. Another mistake is classifying finished articles made from cellulose derivatives (e.g., cellulose acetate films, certain textile fibers) under 3912, when they belong to chapters like 3920, 3921, or 54. Traders might also incorrectly classify certain natural polymers or modified starches under 3912 instead of 3913 or Chapter 11/35, failing to recognize the specific 'chemical derivative' and 'cellulose' requirements.

In 2025, the top exporters of HS code 3912 in UN Comtrade data were the United States ($1.4B, 20% of world exports), China ($1.2B) and Germany ($1.1B). World exports came to about $7.1B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

In 2025, the top importers of HS code 3912 in UN Comtrade data were the United States ($658M, 9.1% of world imports), India ($642M) and China ($585M). World imports came to about $7.2B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

HS code 3912 is a 4-digit heading under Chapter 39 of the Harmonized System. The first 2 digits (39) identify the chapter, and digits 3-4 (12) specify the heading. This code contains multiple 6-digit subheadings for precise product classification.