Safety Reference
Danger
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
CAS 77-78-1
Dimethyl sulfate is an industrial chemical widely employed as a methylating agent in organic synthesis. It is used in the manufacturing of various organic chemicals, dyes, perfumes, and in the separation of mineral oils.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
The international HS code for DIMETHYL SULFATE (CAS 77-78-1) is 2920.90.
2920.90
2920 90 10
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
dimethyl sulfate
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COS(=O)(=O)OC