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Name	Acid Red 88	EINECS	216-760-3
CAS No.	1658-56-6	Density	1.508[at 20℃]
PSA	110.53000	LogP	6.09890
Solubility	soluble in water, ethanol, ethylene glycol ether, slightly soluble in acetone, soluble in concentrated acid and dilute sodium hydroxide solution	Melting Point	280 °C
Formula	C₂₀H₁₄N₂O₄S^.Na	Boiling Point	N/A
Molecular Weight	401.38	Flash Point	N/A
Transport Information	N/A	Appearance	Dark red to maroon powder
Safety	24/25	Risk Codes	N/A
Molecular Structure		Hazard Symbols	N/A
Synonyms	Naphthalene Red J (6CI);2-Naphthol RedJ;Acid Leather Red ROC;Acid Red 88;AcidRed A;Acid Red AV;Acid Red G;Acid Rose AV;Amacid Fast Red A;Anadurm RedA-ROC;Apollo Acid Rocceline;Azo Acid RedGS;Benzyl Red ROC;Benzyl Red S;Bucacid FastRed A;C.I. 15620;Cavalene Red A;Colacid Red AV;Conacid Red MM;Dai-ei Roccelline;Derma Fur Red R 150;Dinacid Fast Red A;Dycosacid Red A;Eriosin Roccelline;Ext D and C Red No. 8;Fabracid Red S-A;FastRed A;Fast Red A (acid dye);Fast Red AG;Fast RedAV;Fast Red MA;Fast Red S;Fur Red KB;Hispacid Fast Red A;Indacid Acid Red A;JapanRed No. 506;Kayaku Roccelline;Kemacid Fast Red A;LurazolRed E;Multacid Red A;Multicuer Red A;Naphthalene Red JS;Neklacid Fast Red A;New Red WO;Peony;Pontacyl Fast Red AS;Red No. 506;Rifa Acid Roccelline NS;Rocceline;Roccelline A;Roccelline KG;Roccelline NS;Roccelline S;Romexal Red AV;Shikiso Roccelline;

Acid Red 88 Specification

The IUPAC name of Acid Red 88 is sodium 4-[2-(2-oxonaphthalen-1-ylidene)hydrazinyl]naphthalene-1-sulfonate. With the CAS registry number 1658-56-6 and EINECS 216-760-3, it is also named as 1-Naphthalenesulfonic acid, 4-((2-hydroxy-1-naphthalenyl)azo)-, monosodium salt. The product's categories are Dyes and Pigments; Dyestuff; Organics. It is dark red to maroon powder which is soluble in water, ethanol, ethylene glycol ether, slightly soluble in acetone, soluble in concentrated acid and dilute sodium hydroxide solution. Additionally, this chemical should be sealed in the container and stored in the cool and dry place.

The other characteristics of this product can be summarized as: (1)#H bond acceptors: 6; (2)#H bond donors: 1; (3)#Freely Rotating Bonds: 6; (4)Polar Surface Area: 96.7 Å²; (5)Rotatable Bond Count: 3; (6)Tautomer Count: 4; (7)Exact Mass: 400.049372; (8)MonoIsotopic Mass: 400.049372; (9)Topological Polar Surface Area: 107; (10)Heavy Atom Count: 28; (11)Formal Charge: 0; (12)Complexity: 746; (13)Isotope Atom Count: 0; (14)Undefined Bond StereoCenter Count: 1; (15)Covalently-Bonded Unit Count: 2.

Preparation and Uses of Acid Red 88: Coupling 2 - alpha-naphthol and the diazotization of 1-Amino-4-naphthalene sulfonate gives the product. After salting out, filtration, drying and grinding, we can get the end product. Acid Red 88 can be used for dyeing wool, silk and nylon, and direct printing silk and wool fabric. It can also be used for coloring leather, paper, soap, wood products, cosmetics and medicine.

People can use the following data to convert to the molecule structure.
1. SMILES:[Na]OS(=O)(=O)c4ccc(N=Nc1c2ccccc2ccc1O)c3ccccc34
2. InChI:InChI=1/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/rC20H13N2NaO4S/c23-27-28(25,26)19-12-10-17(15-7-3-4-8-16(15)19)21-22-20-14-6-2-1-5-13(14)9-11-18(20)24/h1-12,24H
3. InChIKey:LGZQSRCLLIPAEE-LXDTYARIAA

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