Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Sourcing 4-Morpholineethanesulfonic acid?
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MES monohydrate
research compound
Sourcing 4-Morpholineethanesulfonic acid?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
4-Morpholineethanesulfonic acid, also known as MES, is an organosulfonic acid commonly used as a biological buffer. It is the conjugate acid of 2-(N-morpholino)ethanesulfonate and exists in equilibrium with its tautomer.
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 4-Morpholineethanesulfonic acid (CAS 4432-31-9) is 2934.99.
2934.99
2934 99 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
2-morpholin-4-ylethanesulfonic acid
SXGZJKUKBWWHRA-UHFFFAOYSA-N
C1COCCN1CCS(=O)(=O)O