HS code · 4-digit heading
HS Code 27.05 – Coal gas, water gas, producer gas and similar gases, other than petroleum gases and other gaseous hydrocarbons
What HS 27.05 covers
Heading 2705 covers various industrial gases derived from coal, lignite, or peat, specifically including coal gas, water gas, producer gas, and similar gases. The critical exclusion here is 'petroleum gases and other gaseous hydrocarbons,' which are classified under 2711. These gases are typically produced through processes like gasification or destructive distillation of solid mineral fuels and are primarily used as fuel for industrial processes, power generation, or as feedstocks for chemical synthesis. Coal gas, historically used for lighting and heating, is produced by the destructive distillation of coal. Water gas is made by passing steam over hot carbon (like coke), while producer gas results from passing air and steam over hot carbon. The scope is limited to these specific types of gases originating from coal, lignite, or peat, emphasizing their mineral fuel source. This classification is vital for trade compliance as it distinctly separates these manufactured gases from natural gas or liquefied petroleum gases (LPG), which have different origins, compositions, and regulatory frameworks. Historically, these gases were foundational to industrial and urban energy supply before the widespread availability of natural gas. Within Chapter 27, these gases represent a gaseous form of processed mineral fuels, demonstrating the versatility of coal, lignite, and peat as sources for various energy products, positioned alongside other refined derivatives.
- Covers
- Coal gas
- Water gas
- Producer gas
- Syngas (from coal/lignite/peat)
- Blast furnace gas
- Coke oven gas
- Town gas (manufactured)
- Synthesis gas from coal
- Integrated gasification combined cycle (IGCC) gas
- Low-BTU gas from coal
- Medium-BTU gas from coal
- Lignite gas
- Peat gas
- Industrial fuel gas from coal
- Manufactured fuel gas
- Lean gas from coal
- Rich gas from coal
- Purified coal gas
- Semi-water gas
- Mixed gas from coal
- Carbureted water gas
- Unpurified coal gas
- Examples
A large industrial complex in China, integrating steel production and chemical manufacturing, might internally utilize coke oven gas (a form of coal gas) produced from its coking plants as a direct fuel source for its steel mills and as a chemical feedstock. In Europe, a chemical plant located near a lignite mine in Germany could import producer gas via a dedicated pipeline from a neighboring facility that converts lignite into gas, using it for ammonia synthesis. An Indian power utility might implement an integrated gasification combined cycle (IGCC) power plant, using syngas derived from the gasification of domestic coal to generate electricity efficiently, demonstrating advanced energy technologies.
Subheadings under 27.05 1
Codes often confused with 27.05
Common mistake. The most common misclassification for 2705 involves confusing these gases with 'Petroleum gases and other gaseous hydrocarbons' under 2711. The crucial distinction is the origin: 2705 gases are derived from coal, lignite, or peat, whereas 2711 covers gases from petroleum or natural gas (e.g., LNG, LPG, propane, butane). Another error can occur if highly purified single components (e.g., pure hydrogen or carbon monoxide) derived from these gases are classified here; if they reach a purity level for specific chemical uses, they might fall under Chapter 28 or 29, but 2705 covers the mixed fuel gases as they emerge from the initial production process.
Top exporters and importers of HS code 2705, 2025
In 2025, the largest exporter of HS code 2705 in UN Comtrade data was the Netherlands, with 42% of world exports; the largest importer in UN Comtrade data was Italy, with 83% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 Netherlands $2.5M 42% of world exports
- 2 Estonia $1.4M 24% of world exports
- 3 Singapore $728K 12% of world exports
World total: $5.9M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Italy $12M 83% of world imports
- 2 Netherlands $422K 2.9% of world imports
- 3 France $394K 2.8% of world imports
World total: $14M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Questions about HS 27.05
What is HS code 2705?
HS code 2705 is a 4-digit heading in the Harmonized System that covers: Coal gas, water gas, producer gas and similar gases, other than petroleum gases and other gaseous hydrocarbons. Heading 2705 covers various industrial gases derived from coal, lignite, or peat, specifically including coal gas, water gas, producer gas, and similar gases. The critical exclusion here is 'petroleum gases and other gaseous hydrocarbons,' which are classified under 2711. These gases are typically produced through processes like gasification or destructive distillation of solid mineral fuels and are primarily used as fuel for industrial processes, power generation, or as feedstocks for chemical synthesis. Coal gas, historically used for lighting and heating, is produced by the destructive distillation of coal. Water gas is made by passing steam over hot carbon (like coke), while producer gas results from passing air and steam over hot carbon. The scope is limited to these specific types of gases originating from coal, lignite, or peat, emphasizing their mineral fuel source. This classification is vital for trade compliance as it distinctly separates these manufactured gases from natural gas or liquefied petroleum gases (LPG), which have different origins, compositions, and regulatory frameworks. Historically, these gases were foundational to industrial and urban energy supply before the widespread availability of natural gas. Within Chapter 27, these gases represent a gaseous form of processed mineral fuels, demonstrating the versatility of coal, lignite, and peat as sources for various energy products, positioned alongside other refined derivatives.
What products fall under HS code 2705?
Coal gas, water gas, producer gas, syngas (from coal/lignite/peat), blast furnace gas, coke oven gas, town gas (manufactured), synthesis gas from coal, integrated gasification combined cycle (IGCC) gas, low-BTU gas from coal, medium-BTU gas from coal, lignite gas, peat gas, industrial fuel gas from coal, manufactured fuel gas, lean gas from coal, rich gas from coal, purified coal gas, semi-water gas, mixed gas from coal, carbureted water gas, unpurified coal gas
What are common misclassifications for HS code 2705?
The most common misclassification for 2705 involves confusing these gases with 'Petroleum gases and other gaseous hydrocarbons' under 2711. The crucial distinction is the origin: 2705 gases are derived from coal, lignite, or peat, whereas 2711 covers gases from petroleum or natural gas (e.g., LNG, LPG, propane, butane). Another error can occur if highly purified single components (e.g., pure hydrogen or carbon monoxide) derived from these gases are classified here; if they reach a purity level for specific chemical uses, they might fall under Chapter 28 or 29, but 2705 covers the mixed fuel gases as they emerge from the initial production process.
Which countries are the top exporters of goods under HS code 2705?
In 2025, the top exporters of HS code 2705 in UN Comtrade data were the Netherlands ($2.5M, 42% of world exports), Estonia ($1.4M) and Singapore ($728K). World exports came to about $5.9M, 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.
Which countries are the top importers of goods under HS code 2705?
In 2025, the top importers of HS code 2705 in UN Comtrade data were Italy ($12M, 83% of world imports), the Netherlands ($422K) and France ($394K). World imports came to about $14M, 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.
How is HS code 2705 structured?
HS code 2705 is a 4-digit heading under Chapter 27 of the Harmonized System. The first 2 digits (27) identify the chapter, and digits 3-4 (05) specify the heading. This code contains multiple 6-digit subheadings for precise product classification.