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68250

Sigma-Aldrich

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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1 G
¥1,399.61

¥1,399.61

Estimated to ship on2025年6月26日Details

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¥1,399.61

About This Item

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

¥1,399.61

Estimated to ship on2025年6月26日Details

Request a Bulk Order

form

powder

Quality Level

200

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

SMILES string

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

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氧化铼(IV) 99.7% trace metals basis

342254

氧化铼(IV)

钛 (IV) 氧化物，金红石型 ≥99.98% trace metals basis

204757

钛 (IV) 氧化物，金红石型

assay

99.9% trace metals basis

assay

≥99.9% trace metals basis

assay

99.7% trace metals basis

assay

≥99.98% trace metals basis

form

powder and chunks

form

powder

form

powder

form

powder

density

6.97 g/mL at 25 °C (lit.)

density

4.17 g/mL at 25 °C (lit.)

density

-

density

4.17 g/mL at 25 °C (lit.)

reaction suitability

reagent type: catalyst
core: ruthenium

reaction suitability

reagent type: catalyst
core: titanium

reaction suitability

reagent type: catalyst
core: rhenium

reaction suitability

reagent type: catalyst
core: titanium

Quality Level

100

Quality Level

200

Quality Level

100

Quality Level

100

General description

Methyl orange is an orange colored synthetic dye,[1] which undergoes a change in color depending on the pH of the solution.[2] It basically develops a red color in acidic solution and yellow color in basic solution.[2]

Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H301

Hazard Classifications

Acute Tox. 3 Oral

Storage Class Code

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

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCCL5315
BCCK1373
BCCH2657
BCCC8847
BCCB7429

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Longman Science Chemistry 10 (2008)
Science for Tenth Class Part 2 Chemistry null
Ya Yang et al.
Nano letters, 13(2), 803-808 (2013-01-18)
In general, methyl orange (MO) can be degraded by an electrocatalytic oxidation process driven by a power source due to the generation of superoxidative hydroxyl radical on the anode. Here, we report a hybrid energy cell that is used for
Soon-An Ong et al.
Environmental science and pollution research international, 20(5), 3405-3413 (2012-11-02)
The objective of this study was to examine the effects of adsorbability and number of sulfonate group on solar photocatalytic degradation of mono azo methyl orange (MO) and diazo Reactive Green 19 (RG19) in single and binary dye solutions. The
Jie Ma et al.
ACS applied materials & interfaces, 4(11), 5749-5760 (2012-10-16)
An alkali-acitvated method was explored to synthesize activated carbon nanotubes (CNTs-A) with a high specific surface area (SSA), and a large number of mesopores. The resulting CNTs-A were used as an adsorbent material for removal of anionic and cationic dyes
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