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Alfa Aesar™ Methyl Orange

Chemical Identifiers

Chemical Name or Material Methyl Orange
CAS 547-58-0
Molecular Formula C14H14N3NaO3S
Formula Weight 327.34g/mol
MDL Number MFCD00007502
UN Number UN3143
Beilstein 4732884
Merck Index 14,6105
Synonym Acid Orange 52; C.I. 13025
View More Specs
Products
Catalog Number Mfr. No. Quantity Price Quantity    

AAA1760414

 
alfa aesar™
A17604-14
25g CALL N/A N/A
 Please call Customer Service at 1-800-234-7437 or send an email to help@thermofisher.com for assistance.

AAA1760422

 
alfa aesar™
A17604-22
100g CALL N/A N/A
 Please call Customer Service at 1-800-234-7437 or send an email to help@thermofisher.com for assistance.

AAA1760436

 
alfa aesar™
A17604-36
500g CALL N/A N/A
 Please call Customer Service at 1-800-234-7437 or send an email to help@thermofisher.com for assistance.
Description & Specifications

Specifications

Odor Weak, Characteristic
Melting Point >300°C
pH 6.5
Quantity 25g
Chemical Name or Material Methyl Orange
CAS 547-58-0
Molecular Formula C14H14N3NaO3S
Formula Weight 327.34g/mol
MDL Number MFCD00007502
UN Number UN3143
Beilstein 4732884
Merck Index 14,6105
Synonym Acid Orange 52; C.I. 13025
Health Hazard 1 Danger
Health Hazard 2 GHS H Statement
H301
Toxic if swallowed.
Health Hazard 3 GHS P Statement
P264-P270-P301+P310-P321-P405-P501a
Wash thoroughly after handling.
Do not eat, drink or smoke when using this product.
IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
Specific treatment (see label).
Store locked up.
Dispose of contents/container in accordance with local/regional/national/international regulations.
DOT Information Transport Hazard Class: 6.1; Packing Group: III; Proper Shipping Name: DYES, SOLID, TOXIC, N.O.S.
RTECS Number DB6327000
TSCA TSCA

Applications
Methyl Orange is a pH indicator used in titrations for acids. It is also used for histological microscopy. Further, it is used as counter stain to crystal violet in staining pollen tubes.

Solubility
Soluble in ethanol. Partially soluble in hot water. Slightly soluble in cold water and pyrimidine. Insoluble in ether and alcohol.

Notes
Incompatible with strong oxidizing agents.

Safety and Handling

Danger

GHS P Statement
P264-P270-P301+P310-P321-P405-P501a
Wash thoroughly after handling.
Do not eat, drink or smoke when using this product.
IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
Specific treatment (see label).
Store locked up.
Dispose of contents/container in accordance with local/regional/national/international regulations.

GHS H Statement
H301
Toxic if swallowed.