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Merck
CN

75370

Sigma-Aldrich

Orange II sodium salt

suitable for microscopy

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
Colour Index Number:
15510
Beilstein:
3898201
EC Number:
211-199-0
MDL number:
MFCD00011657
UNSPSC Code:
12171500
PubChem Substance ID:
329766389
NACRES:
MA.02

Key Documents

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form

powder

Quality Level

200

visual transition interval

11-13, yellow to orange-red

solubility

hot water: 0.5 g/10 mL, clear

εmax

≥500 at 478.0-488.0 nm in water

suitability

suitable for microscopy

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

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

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

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General description

Orange II is a sulfonated azo dye.

Application

It has been used in synthesis and characterization of Fe-doped aluminosilicate nanotubes with electron conductive properties.

Other Notes

Reagent for the extraction and spectrophotomeric determination of cationic surfactants

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
WE304250/1
E304250/1V
304250/1

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Synthesis and Characterization of Fe-doped Aluminosilicate Nanotubes with Enhanced Electron Conductive Properties.
Shafia E
Journal of Visualized Experiments, 117, 1-1 (2016)
J. Kawase et al.
Analyst, 104, 750-750 (1979)
Properties of purified Orange II azoreductase, the enzyme initiating azo dye degradation by Pseudomonas KF46.
Zimmermann T, Kulla HG, Leisinger T.
European Journal of Biochemistry, 129(1), 197-203 (1982)
Hiromi Urano et al.
Biocontrol science, 16(3), 123-126 (2011-09-29)
The effect of sodium hypochlorite (NaOCl) on the decolorization of azo dye orange II (4-[(2-hydroxy-1-naphthalenyl) azo]-benzenesulfonic acid, monosodium salt) in aqueous solution was studied as a function of pH. The first-order rate constant of color reduction (k) was evaluated from
Ruixia Yuan et al.
Journal of hazardous materials, 196, 173-179 (2011-10-05)
Sodium chloride is a common salt used during textile wet processes. Here a dual effect of chloride (i.e. inhibitory and accelerating effect) on azo dye (Acid Orange 7, AO7) degradation in an emerging cobalt/peroxymonosulfate (Co/PMS) advanced oxidation process (AOP) was
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