Disodium 1,5-naphthalenedisulfonate is the disodium salt of Armstrong acid, a fluorescent organic compound. It is a colorless solid typically obtained as the tetrahydrate and is used primarily as an anti-scaling and corrosion inhibitor.
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.
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Phosphonobutanetricarboxylic acid
Anti-scaling and corrosion inhibitor
2,7-Naphthalenedisulfonic acid disodium salt
Naphthalene sulfonate intermediate for dyes
SODIUM OLEATE
Emulsifier and ore flotation agent
2-methoxyethyl vinyl ether
Industrial polymer production
Tert-butyl acrylate
Monomer for acrylic resins and coatings
1,5-Naphthalenedisulfonic acid tetrahydrate
intermediate for dyes and pigments
1,5-naphthalenedisulfonic acid
Dye intermediate
The international HS code for Disodium 1,5-naphthalenedisulfonate (CAS 1655-29-4) is 2904.10.
2904.10
2904 10 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
disodium;naphthalene-1,5-disulfonate
YGSZNSDQUQYJCY-UHFFFAOYSA-L
C1=CC2=C(C=CC=C2S(=O)(=O)[O-])C(=C1)S(=O)(=O)[O-].[Na+].[Na+]
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