Methyl Orange

SIAL/114510 - ACS reagent, Dye content 85 %

Synonym: 4-[4-(Dimethylamino)phenylazo]benzenesulfonic acid sodium salt; Acid Orange 52; Helianthin; Orange III

CAS Number: 547-58-0
Empirical Formula (Hill Notation): C₁₄H₁₄N₃NaO₃S
Molecular Weight: 327.33
EC Number: 208-925-3
MDL Number: MFCD00007502
Linear Formula: C₁₄H₁₄N₃NaO₃S
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-114510-25G	25 g	$55.90 1/EA	Add To Favorites
45-114510-100G	100 g	$78.80 1/EA	Add To Favorites
45-114510-500G	500 g	$296.00 1/EA	Add To Favorites

This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 114510-500G

Properties
Descriptions
Safety Info.
Basic Data

λ_max	505 nm
application(s)	diagnostic assay manufacturing hematology histology
color	orange
composition	Dye content, 85%
form	powder
grade	ACS reagent
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/b16-15+;
InChI key	STZCRXQWRGQSJD-GEEYTBSJSA-M
mp	>300 °C
pH	3.0-4.4, pink to yellow
Quality Level	200
SMILES string	[Na+].CN(C)c1ccc(cc1)N=Nc2ccc(cc2)S([O-])(=O)=O
storage temp.	room temp
technique(s)	titration: suitable
visual transition interval	3.2-4.4, red to yellow

Application:	Methyl orange is used as a- • pH indicator in the cell sap • counterstain to crystal violet in staining pollen tubes • component of a polychrome histological stain • solution indicator, such as in assays of oxalic and malonic acids • in other biomedical applications that include use in film dosimeters and as a reagent for the assay of bromide ions.
Biochem/physiol Actions:	Methyl Orange is an azo dye which works as a pH indicator.
General description:	Methyl orange (C.I. 13025) is the sodium salt of p-dimethylaminoazobenzenesulfonic acid.It is an orange-colored synthetic dye, which changes color depending on the pH of the solution. It develops a red color in acidic solution and yellow color in basic solution.
Packaging:	25, 100, 500 g in glass bottle

Symbol	GHS06
Signal word	Danger
Hazard statements	H301
Precautionary statements	P301 + P330 + P331 + P310
Hazard Codes	T
Risk Statements	25
Safety Statements	45
RIDADR	UN 3143PSN1 6.1 / PGIII
WGK Germany	WGK 3
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable

mp	>300 °C
Storage Temp.	room temp
Colour Index Number	13025; 13025
UNSPSC	12171500

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