Acid Red 88 - Dye strength 100% , CAS No.1658-56-6

CAS: 1658-56-6 Cat. No.: E615536 Molecular Weight: 400.38 EC Number: 216-760-3

GRADE & PURITY Dye strength 100%

Synonyms

Vondacid Red GN | 4-(2-Hydroxy-1-naphthylazo)-1-naphthalenesulfonic acid | Diacid Red A | Naphtocard Fast Red C | Fast Red ALS | Fast Red AV | Acid Leather Red ROC | CI 15620 | Pontacyl Fast Red AS | SB 202190, >=98% (HPLC) | SULFADIAZINE COMPONENT OF SUL

Storage

Room temperature,Desiccated

Shipped In

Normal

Specifications

Synonyms

Vondacid Red GN | 4-(2-Hydroxy-1-naphthylazo)-1-naphthalenesulfonic acid | Diacid Red A | Naphtocard Fast Red C | Fast Red ALS | Fast Red AV | Acid Leather Red ROC | CI 15620 | Pontacyl Fast Red AS | SB 202190, >=98% (HPLC) | SULFADIAZINE COMPONENT OF SUL

Specifications & Purity

Dye strength 100%

Storage

Room temperature, Desiccated

Shipped In

Normal

Names and Identifiers

• Canonical Smiles: C1=CC=C2C(=C1)C=CC(=C2N=NC3=CC=C(C4=CC=CC=C43)S(=O)(=O)[O-])O.[Na+]
• IUPAC Name: sodium;4-[(2-hydroxynaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate
• InChIKey: LGZQSRCLLIPAEE-UHFFFAOYSA-M
• INCHI: 1S/C20H14N2O4S.Na/c23-18-11-9-13-5-1-2-6-14(13)20(18)22-21-17-10-12-19(27(24,25)26)16-8-4-3-7-15(16)17;/h1-12,23H,(H,24,25,26);/q;+1/p-1
• Isomeric SMILES: C1=CC=C2C(=C1)C=CC(=C2N=NC3=CC=C(C4=CC=CC=C43)S(=O)(=O)[O-])O.[Na+]
• Molecular Weight: 400.38
• Reaxy-Rn: 4119212
• Reaxys-RN_link_address: https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=4119212&ln=

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Benzenoids
    • Class Naphthalenes
      • Subclass 1,1'-azonaphthalenes

• Kingdom: Organic compounds
• Superclass: Benzenoids
• Class: Naphthalenes
• Subclass: 1,1'-azonaphthalenes
• Intermediate Tree Nodes: Not available
• Direct Parent: 1,1'-azonaphthalenes
• Alternative Parents: 1-naphthalene sulfonic acids and derivatives 1-naphthalene sulfonates 1-sulfo,2-unsubstituted aromatic compounds Phenoxides Sulfonyls Organosulfonic acids Azo compounds Propargyl-type 1,3-dipolar organic compounds Organooxygen compounds Organic sodium salts Organic oxides Hydrocarbon derivatives Organic cations
• Molecular Framework: Aromatic homopolycyclic compounds
• Substituents: 1,1'-azonaphthalene - Naphthalene sulfonate - 1-naphthalene sulfonic acid or derivatives - Naphthalene sulfonic acid or derivatives - 1-naphthalene sulfonate - Arylsulfonic acid or derivatives - 1-sulfo,2-unsubstituted aromatic compound - Phenoxide - Organic sulfonic acid or derivatives - Organosulfonic acid or derivatives - Organosulfonic acid - Sulfonyl - Azo compound - Propargyl-type 1,3-dipolar organic compound - Organic 1,3-dipolar compound - Organic alkali metal salt - Organic salt - Organic nitrogen compound - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Organic sodium salt - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Organic cation - Aromatic homopolycyclic compound
• Description: This compound belongs to the class of organic compounds known as 1,1'-azonaphthalenes. These are organonitrogen aromatic compounds that contain a central azo group, where each nitrogen atom is conjugated to the 1-position of a naphthalene ring system. Naphthalene is a compound made up of two fused benzene rings.
• External Descriptors: Not available

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Chemical and Physical Properties

• Melt Point(°C): 280°C(分解)
• Molecular Weight: 400.400 g/mol
• Hydrogen Bond Donor Count: 1
• Hydrogen Bond Acceptor Count: 6
• Rotatable Bond Count: 3
• Exact Mass: 400.049 Da
• Monoisotopic Mass: 400.049 Da
• Topological Polar Surface Area: 111.000 Ų
• Heavy Atom Count: 28
• Formal Charge: 0
• Complexity: 653.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 2

XLogP3

References

1. Hao Zhang, Rongbo Zhao, Zhiliang Liu, Xiangchao Zhang, Chunfang Du.  (2022)  Enhanced adsorption properties of polyoxometalates/coal gangue composite:The key role of kaolinite-rich coal gangue.  APPLIED CLAY SCIENCE,      [PMID:] [10.1016/j.clay.2022.106730]

2. Wenyu Zhang, Le Wang, Yiguo Su, Zhiliang Liu, Chunfang Du.  (2021)  Indium oxide/Halloysite composite as highly efficient adsorbent for tetracycline Removal: Key roles of hydroxyl groups and interfacial interaction.  APPLIED SURFACE SCIENCE,      [PMID:] [10.1016/j.apsusc.2021.150708]

3. Chen De Xing, Long Yun Fei.  (2025)  Acid red G stabilized blue fluorescent copper nanoclusters for the detection of tetracycline.  CHEMICAL PAPERS,      [PMID:] [10.1007/s11696-025-04244-9]

4. Xinda You, Zifan Song, Youqing Tian, Ran Chen, Yuxiang Wu, Meijie Wang, Dai Shi, Shan Luo, Jiamei Sun, Yuanhui Xiao, Haixiong Liu, Hanyang Liu, Beili Lu, Lirong Tang, Xingzhong Cao, Jiande Lin, Biao Huang.  (2025)  Coordination-reconstructed cellulose membranes for precise molecular separation.  JOURNAL OF MEMBRANE SCIENCE,      [PMID:] [10.1016/j.memsci.2025.125020]