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
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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 |
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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