Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Sourcing 4-Chloro-1,8-naphthalic anhydride?
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DilC18(3)(1+)
fluorescent membrane dye
Sourcing 4-Chloro-1,8-naphthalic anhydride?
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4-Chloro-1,8-naphthalic anhydride is a halogenated aromatic anhydride used primarily as an intermediate in the synthesis of fluorescent solvent dyes. It features a tricyclic core with two ester groups and a chlorine substituent.
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-Chloro-1,8-naphthalic anhydride (CAS 4053-08-1) is 2917.39.
2917.39
2917 39 85
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
8-chloro-3-oxatricyclo[7.3.1.05,13]trideca-1(12),5(13),6,8,10-pentaene-2,4-dione
UJEUBSWHCGDJQU-UHFFFAOYSA-N
C1=CC2=C(C=CC3=C2C(=C1)C(=O)OC3=O)Cl