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68250

Methyl Orange

suitable for microscopy

Synonym(s):

4-[4-(Dimethylamino)phenylazo]benzenesulfonic acid sodium salt, Acid Orange 52, Helianthin, Orange III

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About This Item

Empirical Formula (Hill Notation):
C14H14N3NaO3S
CAS Number:
547-58-0
Molecular Weight:
327.33
EC Number:
208-925-3
UNSPSC Code:
12171500
NACRES:
MA.02
PubChem Substance ID:
329760496
MDL number:
MFCD00007502
Beilstein/REAXYS Number:
4732884
Colour Index Number:
13025

Key Documents

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InChI key

STZCRXQWRGQSJD-GEEYTBSJSA-M

InChI

1S/C14H15N3O3S.Na/c1-17(2)13-7-3-11(4-8-13)15-16-12-5-9-14(10-6-12)21(18,19)20;/h3-10H,1-2H3,(H,18,19,20);/q;+1/p-1/b16-15+;

SMILES string

[Na+].CN(C)c1ccc(cc1)\N=N\c2ccc(cc2)S([O-])(=O)=O

form

powder

technique(s)

titration: suitable

pH

3.0-4.4, pink to yellow

solubility

methanol: water (1:1): 0.1 g/10 mL, orange to very deep orange

λmax

501.4 nm in H2O (acidified)

suitability

suitable for microscopy

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

Quality Level

200

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This Item
11451019-389040-2013
Methyl Orange suitable for microscopy

Sigma-Aldrich

68250

Methyl Orange

Methyl Orange ACS reagent, Dye content 85 %

Sigma-Aldrich

114510

Methyl Orange

Methyl Orange JIS special grade

Sigma-Aldrich

19-3890

Methyl Orange

Methyl Orange solution pH 3.1-4.4

Sigma-Aldrich

40-2013

Methyl Orange solution

technique(s)

titration: suitable

technique(s)

titration: suitable

technique(s)

-

technique(s)

-

grade

for microscopy (Hist.), indicator (pH 3.0-4.4)

grade

ACS reagent

grade

JIS special grade

grade

-

solubility

methanol: water (1:1): 0.1 g/10 mL, orange to very deep orange

solubility

-

solubility

-

solubility

-

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

-

application(s)

-

form

powder

form

powder

form

solid

form

liquid

storage temp.

room temp

storage temp.

room temp

storage temp.

-

storage temp.

-

General description

Methyl orange is an orange colored synthetic dye, which undergoes a change in color depending on the pH of the solution. It basically develops a red color in acidic solution and yellow color in basic solution.

pictograms

Skull and crossbones
GHS06

signalword

Danger

hcodes

H301

Hazard Classifications

Acute Tox. 3 Oral

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN3096
BCCL5315
BCCK1373
BCCH2657
BCCC8847

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Science for Tenth Class Part 2 Chemistry null
Longman Science Chemistry 10 (2008)
Jing Cao et al.
Journal of hazardous materials, 239-240, 316-324 (2012-09-29)
Novel p-n junction photocatalysts BiOI/(BiO)2CO3 with different contents of BiOI were in situ synthesized by etching (BiO)2CO3 precursor with hydroiodic acid (HI) solution. X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectrometry (FT-IR), energy-dispersive spectroscopy (EDS)
P Kumar et al.
Colloids and surfaces. B, Biointerfaces, 103, 658-661 (2012-12-26)
In this paper, we report on biosynthesis of silver nanoparticles using Ulva lactuca (seaweed) at room temperature along with photocatalytic degradation of methyl orange dye. UV spectral analysis showed peak at 430 nm with special reference to the excitation of
Tarek Alammar et al.
Nanoscale, 5(17), 8045-8055 (2013-07-23)
The phase selective synthesis of nanocrystalline TiO2, titania, in ionic liquids (ILs) is explored. The influence not only of the IL but also of the Ti-precursor, pH, and temperature is investigated. Sonochemical synthesis, microwave synthesis and conventional heating are compared.
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