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(2N) 99% Methyl Orange Solution
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(3N) 99.9% Methyl Orange Solution
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(4N) 99.99% Methyl Orange Solution
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(5N) 99.999% Methyl Orange Solution
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Methyl Orange Solution Properties (Theoretical)

Compound Formula C14H14N3O3SNa
Molecular Weight 327.33
Appearance red to orange to yellow liquid
Melting Point >300 °C
Boiling Point N/A
Density 0.97 g/mL
Solubility in H2O N/A
pH 3.0 - 4.4, pink to yellow
Absorption λmax 505 nm
Exact Mass 327.065357
Monoisotopic Mass 327.065357

Methyl Orange Solution Health & Safety Information

Signal Word Warning
Hazard Statements H226
Hazard Codes N/A
Risk Codes N/A
Safety Statements N/A
RTECS Number N/A
Transport Information N/A
WGK Germany 1

About Methyl Orange Solution

Methyl Orange Solution is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Methyl Orange Solution Synonyms

Sodium 4-(4-dimethylaminophenylazo)benzenesulphonate; 4-[[(4-Dimethylamino)phenyl]azo]benzenesulfonic Acid Sodium Salt; benzenesulfonic acid, 4-[2-[4-(dimethylamino)phenyl]diazenyl]-, sodium salt (1:1); Acid Orange 52; methyl orange sodium salt; Orange III; Gold Orange; Eniamethyl Orange; Helianthine; Diazoben; C.I. 13025

Chemical Identifiers

Linear Formula C14H14N3O3SNa
MDL Number MFCD00007502
EC No. 208-925-3
Beilstein/Reaxys No. 4732884
Pubchem CID 23673835
IUPAC Name sodium; 4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonate
SMILES CN(C)C1=CC=C(C=C1)N=NC2=CC=C(C=C2)S(=O)(=O)[O-].[Na+]
InchI Identifier 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

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements


See more Nitrogen products. Nitrogen is a Block P, Group 15, Period 2 element. Its electron configuration is [He]2s22p3. Nitrogen is an odorless, tasteless, colorless and mostly inert gas. It is the seventh most abundant element in the universe and it constitutes 78.09% (by volume) of Earth's atmosphere. Nitrogen was discovered by Daniel Rutherford in 1772.


Sodium Bohr ModelSee more Sodium products. Sodium (atomic symbol: Na, atomic number: 11) is a Block D, Group 5, Period 4 element with an atomic weight of 22.989769. The number of electrons in each of Sodium's shells is [2, 8, 1] and its electron configuration is [Ne] 3s1. The sodium atom has a radius of 185.8 pm and a Van der Waals radius of 227 pm. Sodium was discovered and first isolated by Sir Humphrey Davy in 1807. In its elemental form, sodium has a silvery-white metallic appearance. It is the sixth most abundant element, making up 2.6 % of the earth's crust. Sodium does not occur in nature as a free element and must be extracted from its compounds (e.g., feldspars, sodalite, and rock salt). The name Sodium is thought to come from the Arabic word suda, meaning "headache" (due to sodium carbonate's headache-alleviating properties), and its elemental symbol Na comes from natrium, its Latin name.


See more Sulfur products. Sulfur (or Sulphur) (atomic symbol: S, atomic number: 16) is a Block P, Group 16, Period 3 element with an atomic radius of 32.066. Sulfur Bohr ModelThe number of electrons in each of Sulfur's shells is 2, 8, 6 and its electron configuration is [Ne] 3s2 3p4. In its elemental form, sulfur has a light yellow appearance. The sulfur atom has a covalent radius of 105 pm and a Van der Waals radius of 180 pm. In nature, sulfur can be found in hot springs, meteorites, volcanoes, and as galena, gypsum, and epsom salts. Sulfur has been known since ancient times but was not accepted as an element until 1777, when Antoine Lavoisier helped to convince the scientific community that it was an element and not a compound.

Recent Research


February 21, 2024
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