C23H14Cl2N6O8S2
637.4 g/mol
Dye & PigmentWarning
Reactive Blue 4
CAS13324-20-4EC236-363-9
Category
Dye & Pigment
Compound Class
Heterocycle
Primary Use
reactive dye for textile
Reactive Blue 4 is a synthetic dye primarily used in textile dyeing. It is also employed as a ligand in affinity chromatography for protein purification, based on its ability to bind to certain protein active sites.
reactive dye for textilesligand for dye-affinity chromatography in protein purification
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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Related Compounds
ApplicationSame Use
Reactive Black 5
CAS12225-25-1
reactive dye for textile
ReferenceSame Category
Pigment Yellow 34
CAS1344-37-2
Yellow pigment for paints and plastics
ReferenceSame Category
Titanium dioxide
CAS13463-67-7
white pigment for paints and coatings
ReferenceSame Category
4-(4-Aminoanilino)-3-nitrobenzenesulphonic acid
CAS135-11-5
Dye intermediate for azo dyes
ReferenceSame Category
Disodium 3-hydroxynaphthalene-2,7-disulfonate
CAS135-51-3
Dye intermediate
Safety Reference
Warning
H319Causes serious eye irritation
Customs Tariff Classification
The international HS code for Reactive Blue 4 (CAS 13324-20-4) is 3204.16.
HS code (international, 6-digit)
3204.16
EU CN code (8-digit)
3204 16 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
1-amino-4-[3-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-4-sulfoanilino]-9,10-dioxoanthracene-2-sulfonic acid
InChIKey
RTLULCVBFCRQKI-UHFFFAOYSA-N
SMILES
C1=CC=C2C(=C1)C(=O)C3=C(C2=O)C(=C(C=C3NC4=CC(=C(C=C4)S(=O)(=O)O)NC5=NC(=NC(=N5)Cl)Cl)S(=O)(=O)O)N
Synonyms (32)
- Brilliant blue X-BR 140
- C.I. Reactive Blue 4
- Helaktyn Blue FR
- Helaktyn Pure Blue FR
- Mikacion Brilliant Blue RS
- Modr Reaktivni 4
- Modr Reaktivni 4 [Czech]
- Ostazin Brilliant Blue S-R
- Procion
- Procion Brilliant Blue MR
- Procion Brilliant Blue MX-R
- Procion Brilliant Blue RS
- Procion blue MX-R
- REACTIVE BRILLIANT BLUE X-BR
- Reactive Blue 4
- Reactive Blue 4 Dye Content
- Reactive Blue MR
- Sigma Reactive Blue 4
- blue
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