Methyl Orange CAS 547-58-0

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Chemical Name: Methyl Orange
CAS No.: 547-58-0
Molecular Fomula: C14H14N3NaO3S
Molecular weight: 327.33
Appearance: Yellow-Orange Powder/Solid
Sample: Available

Methyl Orange CAS 547-58-0

Description of Methyl Orange

Methyl orange is a pH indicator frequently used in titrations because of its clear and distinct colour change. Because it changes colour at the pH of a midstrength acid, it is usually used in titrations for acids. Unlike a universal indicator, methyl orange does not have a full spectrum of colour change, but has a sharper end point. Methyl orange shows orange colour in acidic medium and yellow colour in basic medium.

Basic Info of Methyl Orange

Chemical Name

Methyl Orange

Synonyms

Acid Orange 52;BETZ 0211;S NO 176;orange3;HELIANTHINE;HELIANTHIN;4-dimethylaminoazobenzene-4′-sulfonic acid,sodium salt;ORANGE III;Tropaeolin D;Benzenesulfonic acid, 4-[[4-(dimethylamino)phenyl]azo]-, sodium salt;oranziii;helianthine B.

CAS No.

547-58-0

Molecular Formula

C14H14N3NaO3S

Molecular Weight

327.33400

PSA

93.54000

LogP

4.15290

Safety Info

RTECS

OO3150000

Hazard Class

6.1

Safety Statements

S16-S24/25

HS Code

2927000090

Packing Group

III

WGK Germany

3

RIDADR

UN 2811

Risk Statements

R10

Hazard Codes

T

Properties

Appearance & Physical State

orange-yellow powder

Density

1

Boiling Point

100ºC

Melting Point

300ºC

Flash Point

37 °C

Stability

Stable. Incompatible with strong oxidizing agents.

Storage Condition

Store at RT.

Numbering system

MDL number

MFCD00007502

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What is Methyl Orange?

With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Methyl Orange which has developed particularly rapidly in recent years. Do you know about Methyl Orange?

The official answer: Methyl Orange is an organic substance with the chemical formula C14H14N3SO3Na and is commonly used as an acid-base indicator.

What’s the application of Methyl Orange?

Methyl Orange is a commonly used indicator for acid-base titrations in analytical chemistry and is not suitable for use as an indicator for the titration of organic acids. Its concentration is 0.1% of the aqueous solution pH 3.1 (red) to 4.4 (yellow), suitable for titration between strong acids and strong bases and weak bases. It is also used for the spectrophotometric determination of chlorine, bromine and bromine ions, and for biological staining, etc.

Conclusion

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