Methyl Orange, Reagent, ACS

Molecular Formula
C14H14N3O3SNa
Catalog Number
ME160
Supplier/Brand
Spectrum Chemical
CAS Number
547-58-0

Methyl Orange, Reagent, ACS is most typically used as an indicator in titrations due to the fact of its color change. The color changes happen in acidic conditions and usually moves from red to orange and eventually to yellow. As an ACS grade quality reagent, its chemical specifications are the de facto standards for chemicals used in many high-purity applications and typically designate the highest quality chemical available for laboratory use. Spectrum Chemical manufactured Reagent ACS grade products meet the toughest regulatory standards for quality and purity.


Synonyms: Acid Orange 52 ; Orange III ; Tropaeolin D

Shipping Information

DOT: UN3143, Dye, solid, toxic, n.o.s. (methyl orange), 6.1, PG III

Largest individual container shippable via:
UPS/FedEx Ground: 12 kg    UPS Air: 1 kg    FedEx Air: 50 kg

Additional UPS-imposed hazardous material charge.
Tariff No. 3204125090

Certificates of Analysis

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2023