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Merck
CN

O8126

Orange II sodium salt

Dye content ~85 %

Synonym(s):

4-(2-Hydroxy-1-naphthylazo)benzenesulfonic acid sodium salt, Acid Orange 7, Acid Orange A, Orange II, Tropaeolin 000 No. 2

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About This Item

Empirical Formula (Hill Notation):
C16H11N2NaO4S
CAS Number:
633-96-5
Molecular Weight:
350.32
EC Number:
211-199-0
PubChem Substance ID:
329818923
UNSPSC Code:
12171500
Beilstein/REAXYS Number:
3898201
MDL number:
MFCD00011657

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InChI

1S/C16H12N2O4S.Na/c19-15-10-5-11-3-1-2-4-14(11)16(15)18-17-12-6-8-13(9-7-12)23(20,21)22;/h1-10,19H,(H,20,21,22);/q;+1/p-1/b18-17+;

InChI key

CQPFMGBJSMSXLP-ZAGWXBKKSA-M

SMILES string

[Na+].Oc1ccc2ccccc2c1\N=N\c3ccc(cc3)S([O-])(=O)=O

composition

Dye content, ~85%

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Storage Class

13 - Non Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
028K3726
056K3712
106K3692
082K3664
039H3616

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Tadashi Ohashi et al.
Molecules (Basel, Switzerland), 17(12), 14219-14229 (2012-12-04)
Azo dyes are generally resistant to biodegradation due to their complex structures. Acid orange II is one of the most widely used dyes in the textile industry. The influence of bovine serum albumin (BSA) in different concentrations, pH, and time
Ashish Yadav et al.
Toxicology letters, 208(3), 239-245 (2011-12-06)
Orange II, an azo dye, is not permitted in food preparations, but high levels of the dye have been detected in different food commodities. Though there are reports on the toxicity of Orange II but knowledge based on the immunomodulatory
Soon-An Ong et al.
Journal of environmental sciences (China), 24(2), 291-296 (2012-06-05)
We investigated the decolorization of Orange II with and without the addition of co-substrates and nutrients under an anaerobic sequencing batch reactor (ASBR). The increase in COD concentrations from 900 to 1750 to 3730 mg/L in the system treating 100
Deepika Parasuraman et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 13(10), 2507-2515 (2012-04-28)
We review our recent efforts utilizing poly(N-isopropylacrylamide)-co-acrylic acid (pNIPAm-co-AAc) microgels and their assemblies for the removal of an azo-dye molecule, 4-(2-Hyrodxy-1-napthylazo) benzenesulfonic acid sodium salt (Orange II), from aqueous solutions. First, the ability of dispersed, single microgels to remove Orange
Pengfei Ji et al.
Environmental technology, 33(4-6), 467-472 (2012-05-29)
CeO2 nanoparticles were prepared by a simple precipitation method, followed by calcination treatment. By selecting photocatalytic degradation of acid orange 7 (AO7) as a probe reaction, the influences of calcination temperature of catalyst, the concentration of AO7, initial pH value
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