HS code · 6-digit subheading
HS Code 3812.10 – Rubber accelerators; prepared
HS code 3812.10 is the 6-digit subheading for rubber accelerators, prepared. It is used for thiazole accelerators, sulfenamide accelerators, thiuram accelerators, guanidine accelerators and dithiocarbamate accelerators.
What HS 3812.10 covers
Rubber accelerators are chemical compounds essential for speeding up the vulcanization process of rubber, a critical step in transforming raw rubber into durable, elastic products. Without these accelerators, vulcanization would be too slow and inefficient for industrial production. This category is vital for manufacturers in the tire industry, automotive components, footwear, and general rubber goods sectors. Major chemical companies and specialized additive producers are key players in the import and export of these prepared accelerators. Understanding the specific type of rubber (natural or synthetic) and the desired properties of the final product is crucial, as different accelerators offer varying cure rates, scorch safety, and physical properties. The trade often involves specialized chemical blends, and quality control is paramount to ensure consistent rubber product performance. Environmental regulations regarding certain accelerator chemistries also influence global trade patterns.
- Covers
- Thiazole accelerators
- Sulfenamide accelerators
- Thiuram accelerators
- Guanidine accelerators
- Dithiocarbamate accelerators
- Zinc oxide activators
- Stearic acid activators
- Amine-based accelerators
- Examples
- MBTS (Mercaptobenzothiazole disulfide)
- CBS (N-Cyclohexyl-2-benzothiazolesulfenamide)
- TMTD (Tetramethylthiuram disulfide)
- DPG (Diphenylguanidine)
- ZDEC (Zinc diethyldithiocarbamate)
Codes often confused with 3812.10
Common mistake. This code might be confused with 381239 (other anti-oxidising preparations and compound stabilisers for rubber or plastics) if the primary function of accelerating vulcanization is not clearly distinguished from stabilization.
Top exporters and importers of HS code 381210, 2025
In 2025, the largest exporter of HS code 381210 in UN Comtrade data was China, with 55% of world exports; the largest importer in UN Comtrade data was Thailand, with 12% 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 China $472M 55% of world exports
- 2 Italy $77M 8.9% of world exports
- 3 United States $67M 7.8% of world exports
World total: $861M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Thailand $107M 12% of world imports
- 2 India $94M 11% of world imports
- 3 Indonesia $78M 8.8% of world imports
World total: $880M 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.
Brazil NCM code for 3812.10
Brazil does not split HS 3812.10: its NCM code is 3812.10.00.
All Brazil NCM codes in heading 38.12 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 3812.10
What is HS code 381210?
HS code 381210 is a 6-digit subheading in the Harmonized System that covers: Rubber accelerators; prepared. Rubber accelerators are chemical compounds essential for speeding up the vulcanization process of rubber, a critical step in transforming raw rubber into durable, elastic products. Without these accelerators, vulcanization would be too slow and inefficient for industrial production. This category is vital for manufacturers in the tire industry, automotive components, footwear, and general rubber goods sectors. Major chemical companies and specialized additive producers are key players in the import and export of these prepared accelerators. Understanding the specific type of rubber (natural or synthetic) and the desired properties of the final product is crucial, as different accelerators offer varying cure rates, scorch safety, and physical properties. The trade often involves specialized chemical blends, and quality control is paramount to ensure consistent rubber product performance. Environmental regulations regarding certain accelerator chemistries also influence global trade patterns.
What products fall under HS code 381210?
Thiazole accelerators, Sulfenamide accelerators, Thiuram accelerators, Guanidine accelerators, Dithiocarbamate accelerators, Zinc oxide activators, Stearic acid activators, Amine-based accelerators
What are common misclassifications for HS code 381210?
This code might be confused with 381239 (other anti-oxidising preparations and compound stabilisers for rubber or plastics) if the primary function of accelerating vulcanization is not clearly distinguished from stabilization.
Which countries are the top exporters of goods under HS code 381210?
In 2025, the top exporters of HS code 381210 in UN Comtrade data were China ($472M, 55% of world exports), Italy ($77M) and the United States ($67M). World exports came to about $861M, 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 381210?
In 2025, the top importers of HS code 381210 in UN Comtrade data were Thailand ($107M, 12% of world imports), India ($94M) and Indonesia ($78M). World imports came to about $880M, 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 381210 structured?
HS code 381210 is a 6-digit subheading under the Harmonized System. The first 2 digits (38) identify the chapter, digits 3-4 (12) identify the heading, and digits 5-6 (10) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 381210?
In Brazil, HS code 381210 is NCM 3812.10.00. The last two digits are 00 because Brazil does not split this HS code further.