Methyl Orange

Methyl Orange is a soluble azo dye commonly used as an acid-base indicator and for staining cells and tissue sections, as well as for dyeing textiles. Methyl Orange appears red at a pH of 3.1 and changes to bright yellow as the pH increases to 4.4. Methyl Orange (500 mg/L) exhibits cytotoxicity and can cause DNA damage[1][2].

Product Specifications

CAS Number

[547-58-0]

UNSPSC

12171500

Hazard Statement

H301

Target

Fluorescent Dye

Type

Dye Reagents

Related Pathways

Others

Field of Research

Others

Assay Protocol

https://www.medchemexpress.com/methyl-orange.html

Purity

99.85

Solubility

DMSO : 20 mg/mL (ultrasonic; warming; heat to 60°C)

Smiles

O=S(C1=CC=C(C=C1)/N=N/C2=CC=C(C=C2)N(C)C)(O[Na])=O

Molecular Formula

C14H14N3NaO3S

Molecular Weight

327.34

Precautions

H301

References & Citations

[1]Ahmad M, et al. Photocatalytic degradation of methyl orange from wastewater using a newly developed Fe-Cu-Zn-ZSM-5 catalyst. Environ Sci Pollut Res Int. 2020;27 (21) :26239-26248.|[2]Alaguprathana M, et al. Cytogenotoxicity assessment in Allium cepa roots exposed to methyl orange treated with Oedogonium subplagiostomum AP1. Environ Res. 2022 Oct;213:113612.|[3]Sandberg, et al. Kinetics of acid dissociation-ion recombination of aqueous methyl orange. The Journal of Physical Chemistry. 1972, 76 (26) : 4023–4025. of aqueous methyl orange. The Journal of Physical Chemistry. 1972