Safety Reference
Danger
H301Toxic if swallowed
H331
Sourcing SELENIOUS ACID?
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Sourcing SELENIOUS ACID?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
Selenious acid is the principal oxoacid of selenium, with the structure O=Se(OH)2. It is commonly used as a reagent for alkaloids and as an oxidizing agent in laboratory and research settings.
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 SELENIOUS ACID (CAS 7783-00-8) is 2811.19.
2811.19
2811 19 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
selenous acid
MCAHWIHFGHIESP-UHFFFAOYSA-N
O[Se](=O)O