Lyes, residual; from the manufacture of wood pulp, whether or not concentrated, desugared or chemically treated, including lignin sulphonates but excluding tall oil of heading no. 3803
HS v2017 Code: 380400
About lyes, residual; from the manufacture of wood pulp, whether or not concentrated, desugared or chemically treated, including lignin sulphonates but excluding tall oil of heading no. 3803
HS code 380400 covers a range of chemical byproducts and residues generated during the production of wood pulp. These lyes, or alkaline liquors, are an essential part of the pulp and paper industry, playing a crucial role in the overall efficiency and sustainability of the manufacturing process. As a key component of the broader chemical industry, the products under this code contribute to various downstream applications, making it an important segment within the global trade landscape.
Production process
The primary production technique for the items under HS code 380400 involves the extraction and processing of the spent liquors generated during the pulping of wood. This process, known as the kraft or sulfate pulping method, utilizes sodium hydroxide and sodium sulfide to break down the lignin in wood fibers, separating them into pulp. The resulting black liquor, which contains the dissolved lignin and other organic compounds, is then concentrated, desugared, or chemically treated to produce the various lyes and residual products covered under this code.
Production inputs
The main inputs required for the production of the goods under HS code 380400 include wood raw materials, such as softwood and hardwood logs, as well as the chemical reagents used in the pulping process, primarily sodium hydroxide and sodium sulfide. Additionally, specialized equipment for the concentration, separation, and treatment of the black liquor is necessary to extract and refine the desired lyes and residual products.
Production outputs
The primary outputs of the industry covered by HS code 380400 are the various lyes, residues, and byproducts derived from the wood pulping process. These include lignin sulfonates, which find applications in 380410 Lignin, including lignin sulphonates, as well as other chemically treated or concentrated liquors that may be used in 380500 Gum, wood or sulphate turpentine and other terpenic oils produced by the distillation or other treatment of coniferous woods; crude dipentene; sulphite turpentine and other crude para-cymene, 380610 Rosin and resin acids, and 380620 Salts of rosin, of resin acids or of derivatives of rosin or resin acids, other than salts of rosin adducts.
Revisions to 380400
Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 380400. The most recent 1 version of this code (380400) is in the HS v2022 system:
This page shows a legacy version of code 380400 ( HS v2017).
Newer versions
Family tree for lyes, residual; from the manufacture of wood pulp, whether or not concentrated, desugared or chemically treated, including lignin sulphonates but excluding tall oil of heading no. 3803
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