Methyl Orange

SIAL/68250 - suitable for microscopy

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


45-68250-25G	25 g	$29.20 1/EA	Add To Favorites
45-68250-100G	100 g	$48.60 1/EA	Add To Favorites
45-68250-500G	500 g	$169.00 1/EA	Add To Favorites

Properties
Descriptions
Safety Info.
Basic Data

λ_max	501.4 nm in H₂O (acidified)
application(s)	diagnostic assay manufacturing hematology histology
form	powder
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
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
solubility	methanol: water (1:1): 0.1 g/10 mL, orange to very deep orange
storage temp.	room temp
suitability	suitable for microscopy
technique(s)	titration: suitable

General description:

Methyl orange is an orange colored synthetic dye, which undergoes a change in color depending on the pH of the solution. It basically develops a red color in acidic solution and yellow color in basic solution.

Symbol	GHS06
Signal word	Danger
Hazard statements	H301
Precautionary statements	P264 - P270 - P301 + P310 - P405 - P501
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

Storage Temp.	room temp
Colour Index Number	13025
UNSPSC	12171500

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