Safety Reference
Danger
H302Harmful if swallowed
H315Causes skin irritation
H318Causes serious eye damage
H335
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 10138-04-2
Ferric sulfate
Coagulant for industrial wastes
Monoammonium ferric disulfate, also known as ferric ammonium sulfate or iron alum, is a double salt in the class of alums. It commonly appears as weakly violet, octahedral crystals.
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 Monoammonium ferric disulfate (CAS 10138-04-2) is 2833.30.
2833.30
2833 30 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
azanium;iron(3+);disulfate
XGGLLRJQCZROSE-UHFFFAOYSA-K
[NH4+].[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[Fe+3]