Safety Reference
Danger
H301Toxic if swallowed
H302Harmful if swallowed
H317May cause an allergic skin reaction
Sourcing 4-methyl-1-phenylpyrazolidin-3-one?
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Methyltetrahydrophthalic anhydride
Hardener in epoxy resin systems
Sourcing 4-methyl-1-phenylpyrazolidin-3-one?
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4-Methyl-1-phenylpyrazolidin-3-one is an organic compound used as a photographic developing agent. It functions by reducing exposed silver halides to metallic silver, thereby rendering the latent image visible in photographic films, plates, or papers.
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-methyl-1-phenylpyrazolidin-3-one (CAS 2654-57-1) is 2933.19.
2933.19
2933 19 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
4-methyl-1-phenylpyrazolidin-3-one
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