Home Categories Biochemical Engineering Methyl orange
A5349312

Methyl orange , IND , 547-58-0

Synonym(s):
4-[4-(Dimethylamino)phenylazo]benzenesulfonic acid sodium salt;4-Dimethylaminoazobenzene-4′-sulfonic acid sodium salt, Gold orange, Helianthine, Orange III;Acid Orange 52;Helianthin;Orange III

CAS NO.:547-58-0

Empirical Formula: C14H14N3NaO3S

Molecular Weight: 327.33

MDL number: MFCD00007502

EINECS: 208-925-3

Pack Size Price Stock Quantity
25G RMB27.20 In Stock
100G RMB61.60 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 300 °C
Density  0.987 g/mL at 25 °C
Flash point: 37 °C
storage temp.  Store at +5°C to +30°C.
solubility  5g/l
Colour Index  13025
form  Powder/Solid
pka 3.4(at 25℃)
color  Yellow-Orange
Specific Gravity 0.987
Odor Odorless
PH 6.5 (5g/l, H2O, 20℃)
PH Range 3.1(Red)-4.4(Orange)
Water Solubility  Soluble in ethanol. Partially soluble in hot water. Slightly soluble in cold water and pyrimidine. Insoluble in ether and alcohol.
λmax 507nm, 522nm, 464nm
Merck  14,6105
BRN  4732884
Stability: Stable. Incompatible with strong oxidizing agents.
Biological Applications Detecting microorganisms; treating dermatological diseases,vaginal affections; dental materials; wound dressing materials
Major Application Liquid crystals, thin films, sensors, sol-gel matrix, waveguides, host-guest chemistry, display device, corrosion inhibitor, glass coatings, paints, wound dressing materials, pharmaceuticals, dental materials, measuring nucleic acid

Description and Uses

Methyl orange is a pH indicator frequently used in titrations, also used for histological microscopy.

Safety

Symbol(GHS) 
GHS06
Signal word  Danger
Hazard statements  H301
Precautionary statements  P264-P270-P301+P310-P405-P501
Hazard Codes  T
Risk Statements  25-10
Safety Statements  45-24/25-16-36/37/39
RIDADR  UN 3143 6.1/PG 3
WGK Germany  3
RTECS  DB6327000
TSCA  Yes
HazardClass  6.1
PackingGroup  III
HS Code  29270000
Toxicity LD50 orally in Rabbit: 60 mg/kg

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