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Name	Acid Red 151	EINECS	229-029-9
CAS No.	6406-56-0	Density	1.41 g/cm3
PSA	135.25000	LogP	7.36110
Solubility	yet soluble in water, ethanol is orange red, and soluble in glycol ethylene ether, insoluble in other organic solvents	Melting Point	N/A
Formula	C₂₂H₁₅N₄O₄S^.Na	Boiling Point	855.43℃[at 101 325 Pa]
Molecular Weight	454.441	Flash Point	N/A
Transport Information	N/A	Appearance	kermesinus powder
Safety		Risk Codes	N/A
Molecular Structure		Hazard Symbols	N/A
Synonyms	Benzenesulfonicacid, 4-[[4-[(2-hydroxy-1-naphthalenyl)azo]phenyl]azo]-, monosodium salt (9CI);C.I. Acid Red 151, monosodium salt (8CI);Acid Milling Red F 2R;Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate;Acid Red BL;Acid Red CR;Acid Red F 2R;Acid Silk Red 3B;TriacidFast Red GN;Triacid Red S;Vicoacid Red;Amacid Neutral Red BW;Ambinyl Red MBR;Azo Silk Red 3B;BenzylRed G;C.I. 26900;C.I. Acid Red 151;Calcocid Milling Red 3R;Cloth Scarlet;Colomill Red F 2R;Concorde Acid Red G;Daedo Acid Red F 2R;Dermacid Red S;Dinacid Red F 2R;Dynacid Red RB;Erionyl Red B;Fabrinyl Silk Red B;Fast SilkRed TR;Hispalan Scarlet C-B;Indacid Milling Scarlet F 2R;Kemacid Red F 2R;Kenamide Red K 3R;Merpacyl Red L;Milling Red RS;Nylanthrene Red C 3BR;Nylosan Red F 2R;Nylosan Red F/C 2R;Polan Red BR;Ratna Acid Red F 2R;Red L;Silk Red 3B;Silk Red B;Silk Scarlet GL;Tertracid Milling Scarlet GF;

Acid Red 151 Specification

The Acid Red 151, with the CAS registry number 6406-56-0, is also known as Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate. It belongs to the product categories of Dyes and Pigments; Organics. Its EINECS number is 229-029-9. This chemical's molecular formula is C₂₂H₁₅N₄O₄S^.Na and molecular weight is 454.43. What's more, its systematic name is Sodium 4-({4-[(2-hydroxy-1-naphthyl)diazenyl]phenyl}diazenyl)benzenesulfonate. This chemical is suitable for dyeing of nylon, silk, wool and wool fabric.

Physical properties of Acid Red 151 are: (1)#H bond acceptors: 8; (2)#H bond donors: 2; (3)#Freely Rotating Bonds: 6; (4)Polar Surface Area: 135.25 Å².

Preparation of m-Toluamide: this chemical can be prepared by 4-aminoazophenyl-4 '-sulfonic acid and 2-naphthol. First diazotize the former, and then couple with the latter, amd finally the product is got.

You can still convert the following datas into molecular structure:
(1)SMILES: [Na+].[O-]S(=O)(=O)c1ccc(cc1)N=Nc2ccc(cc2)N=Nc3c4ccccc4ccc3O
(2)Std. InChI: InChI=1S/C22H16N4O4S.Na/c27-21-14-5-15-3-1-2-4-20(15)22(21)26-25-17-8-6-16(7-9-17)23-24-18-10-12-19(13-11-18)31(28,29)30;/h1-14,27H,(H,28,29,30);/q;+1/p-1
(3)Std. InChIKey: QERXHBDEEFLTOL-UHFFFAOYSA-M

The toxicity data is as follows:

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
rat	LD50	oral	7736mg/kg (7736mg/kg)	SENSE ORGANS AND SPECIAL SENSES: CHROMODACYRORREA: EYE KIDNEY, URETER, AND BLADDER: OTHER CHANGES IN URINE COMPOSITION	National Technical Information Service. Vol. OTS0571003.

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