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Merck
CN

195235

Sigma-Aldrich

Orange II sodium salt

(Certified by the Biological Stain Commission), 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
Colour Index Number:
15510
Beilstein:
3898201
EC Number:
211-199-0
MDL number:
MFCD00011657
UNSPSC Code:
12171500
PubChem Substance ID:
24851680
NACRES:
NA.47

Key Documents

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product line

BioXtra

form

powder

composition

Dye content, ≥85%

λmax

483 nm

ε (extinction coefficient)

≥17000 at 480-486 nm in water at 0.01 g/L
≥26500 at 225-231 nm in water at 0.01 g/L
≥7500 at 307-313 nm in water at 0.01 g/L

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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Related Categories

Application

Certified for use in the Wilson-Ezrin method for pituitary acidophils, as a counterstain following Heidenhain′s or Weigert′s hematoxylin on paraffin sections, and as a substitute for orange G in Floemming′s triple stain.

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
SHBM6329
MKCH0421
MKBS5106V
MKBP7151V
MKBL5126V

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Rajeev Jain et al.
Environmental science and pollution research international, 20(3), 1493-1502 (2012-06-13)
The presence of dyes in water is undesirable due to the toxicological impact of their entrance into the food chain. Owing to the recalcitrant nature of dyes to biological oxidation, a tertiary treatment like adsorption is required. In the present
S S Shinde et al.
Journal of photochemistry and photobiology. B, Biology, 117, 262-268 (2012-11-21)
Ag-doped ZnO thin films with preferred c-axis orientation along (002) have been prepared by spray pyrolysis technique in aqueous medium on to the corning glass substrates. The effect of Ag-doping on to the photoelectrochemical, structural, morphological, optical, luminescence, electrical and
Huyin Xue et al.
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 29(12), 1840-1848 (2012-08-15)
This paper reports the preparation of polyclonal antibodies against a synthetic azo dye, Orange II, and the development of an indirect ELISA to detect Orange II in foods. The sulfonic group of Orange II was modified and linked with carrier
Penghui Shi et al.
Journal of hazardous materials, 229-230, 331-339 (2012-06-29)
The current paper investigated the removal of the azo dye Orange II from water using advanced oxidation processes based on sulfate radicals. The cobalt oxide catalyst immobilized on graphene oxide (GO) can activate peroxymonosulfate (PMS) for the degradation of Orange
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
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