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Merck
CN

195235

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
NACRES:
NA.47
PubChem Substance ID:
24851680
UNSPSC Code:
12171500
EC Number:
211-199-0
MDL number:
MFCD00011657
Beilstein/REAXYS Number:
3898201

Key Documents

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InChI key

CQPFMGBJSMSXLP-ZAGWXBKKSA-M

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+;

SMILES string

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

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

Quality Level

200

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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

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

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Certificates of Analysis (COA)

Lot/Batch Number
SHBM6329
MKCH0421
MKBS5106V
MKBP7151V
MKBL5126V

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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
Xin Yang et al.
Huan jing ke xue= Huanjing kexue, 32(7), 1960-1966 (2011-09-20)
Persulfate oxidation is a recently emerging advanced oxidation process for the pollution control. Persulfate (PS) degradation of azo dye acid orange 7 (AO7) in an aqueous solution was studied in the presence of suspended granular activated carbon (GAC) at ambient
Mohammad A Behnajady et al.
Journal of nanoscience and nanotechnology, 13(1), 548-553 (2013-05-08)
In this study, monometallic and bimetallic silver and copper doped TiO2 nanoparticles were prepared by sol-gel method. Structural and morphological characterizations of prepared nanoparticles were performed by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive
Liyuan Kuang et al.
Journal of environmental monitoring : JEM, 13(9), 2496-2501 (2011-08-13)
Mesoporous TiO(2) microspheres were prepared by a hydrothermal reaction and are characterized in this paper. Decoloration and mineralization during photodegradation of Orange II by mesoporous TiO(2) at different pH values, formation of sulfate, relative luminosity to luminous bacteria and recycling
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
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