FD&C Red No. 4 free acid

3-[(2,4-dimethyl-5-sulfophenyl)diazenyl]-4-hydroxynaphthalene-1-sulfonic acid

CAS: 14918-59-3

Molecular Formula	`C18H16N2O7S2`
Molecular Weight	436.5 g/mol
LogP	2.8
Topological Polar Surface Area	170.0 A2
Hydrogen Bond Donors	3
Hydrogen Bond Acceptors	9
Rotatable Bonds	4
Exact Mass	436.0399
Heavy Atoms	29
Complexity	818.0

Chemical Identifiers

CAS Number	14918-59-3
SMILES	`CC1=CC(=C(C=C1N=NC2=C(C3=CC=CC=C3C(=C2)S(=O)(=O)O)O)S(=O)(=O)O)C`
InChIKey	`DZCOAQKTFAIFRV-UHFFFAOYSA-N`

📖 Product Overview

FD&C Red No. 4 free acid (CAS: 14918-59-3) is a chemical compound with molecular formula C18H16N2O7S2 and molecular weight 436.5 g/mol. Its IUPAC systematic name is 3-[(2,4-dimethyl-5-sulfophenyl)diazenyl]-4-hydroxynaphthalene-1-sulfonic acid. LogP 2.8 Topological Polar Surface Area 170.0 A2 Hydrogen Bond Donors 3 Hydrogen Bond Acceptors 9 Rotatable Bonds 4 Exact Mass 436.0399 Heavy Atoms 29 Complexity 818.0 InChI Key: DZCOAQKTFAIFRV-UHFFFAOYSA-N. SMILES: CC1=CC(=C(C=C1N=NC2=C(C3=CC=CC=C3C(=C2)S(=O)(=O)O)O)S(=O)(=O)O)C.

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Safety Data Sheet (MSDS / SDS) View the Laboratory Chemical Safety Summary (LCSS) on PubChem — includes GHS classifications, hazard statements, first aid measures, and handling precautions.

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What is the typical lead time for this product?

Lead time typically ranges from 3-7 business days for in-stock items. For larger quantities or custom orders, please contact us for specific lead times.

Can you provide samples for testing?

Yes, we offer sample quantities for quality testing. Please submit an inquiry with your requirements and we will arrange samples accordingly.

What documentation do you provide with the product?

We provide COA (Certificate of Analysis), MSDS (Material Safety Data Sheet), and technical data sheets with each shipment.

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