HS Code 2920
Esters of Other Inorganic Acids
HS code 2920 is for esters of inorganic acids of non-metals and their salts, including dialkyl sulphates and carbonates used in industrial synthesis.
4-digit Section VITanker Hazmat 8
HS Code 2920 — Esters of Other Inorganic Acids
This code is for esters of inorganic acids excluding hydrogen halides and phosphoric acid. It includes chemicals like dimethyl sulphate and various silicic acid esters used in chemical synthesis and laboratory research.
What's included
- Thiophosphoric esters
- Dimethyl sulphate
- Diethyl sulphate
- Trimethyl phosphite
What's excluded
- Esters of hydrogen halides → use
2903(Halogenated derivatives of hydrocarbons are classified in chapter 2903.)
Common examples
- Dimethyl sulphate liquid
- Tetraethyl silicate
- Trimethyl phosphite
- O,O-Diethyl phosphorothioate
Frequently asked questions
Why is dimethyl sulphate high-risk?
It is a potent alkylating agent and is highly toxic and carcinogenic, requiring specialised handling and regulatory oversight.
Trade & shipping notes
- Typical duty range: 0% - 6.5%
- Documentation: Dual-use and CWC compliance must be verified for all phosphite esters under this code.
- Typical shipping mode: Tanker
- Top exporters: China, Germany, India, United States
- Top importers: Japan, Switzerland, Brazil, France
Related HS codes
Key takeaway
Contains highly reactive and strictly regulated chemicals used as alkylating agents.
Related HS codes
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