Safety Reference
Danger
H318Causes serious eye damage
H373May cause damage to organs through prolonged or repeated exposure
H412
Sourcing Acid Black 234?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
Direct Black 38
direct dye for textiles
Sourcing Acid Black 234?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
Acid Black 234 is an anionic azo dye used as an acid dye for textiles, particularly for dyeing wool, silk, and nylon. Its molecular structure features multiple sulfonate groups, which provide water solubility and affinity for protein fibers.
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 Acid Black 234 (CAS 157577-99-6) is 3204.12.
3204.12
3204 12 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;4-amino-3-[[4-[[4-[(2,4-diaminophenyl)diazenyl]phenyl]sulfonylamino]phenyl]diazenyl]-5-hydroxy-6-phenyldiazenylnaphthalene-2,7-disulfonate
GLNHIAPTFHWQKY-UHFFFAOYSA-L
C1=CC=C(C=C1)N=NC2=C(C3=C(C(=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])N=NC4=CC=C(C=C4)NS(=O)(=O)C5=CC=C(C=C5)N=NC6=C(C=C(C=C6)N)N)N)O.[Na+].[Na+]