ChemicalBook > CAS DataBase List > ETHYL ORANGE

ETHYL ORANGE

Product Name
ETHYL ORANGE
CAS No.
62758-12-7
Chemical Name
ETHYL ORANGE
Synonyms
ETHYL ORANGE;Diethyl orange;EthylOrangeSodium;EthylorangeAcs98%;Ethylorange Acs 98%;LABOTEST-BB LT00452773;Ethyl orange indicator;ETHYL ORANGE SODIUM SALT;RESAZURINE REDOX INDICATOR;Ethyl orange sodium salt, 92%, pure
CBNumber
CB7101186
Molecular Formula
C16H20N3NaO3S
Formula Weight
357.4
MOL File
62758-12-7.mol
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ETHYL ORANGE Property

Melting point:
>300°C
storage temp. 
room temp
solubility 
Very soluble in water; very slightly soluble in ethanol
pka
4.34(at 25℃)
form 
Powder
color 
Orange
PH Range
Red (3.4) to yellow (4.8)
Water Solubility 
H2O: 1mg/mL
ε(extinction coefficient)
≥29000 at 473-477nm in deionized water
≥8000 at 274-282nm in deionized water
λmax
474nm
BRN 
3821641
Major Application
Lithographic plate preparation, holographic storage, hybrid materials, inks, surface probes, diagnostic agents for diseases related with amyloid accumulation
InChI
InChI=1S/C16H19N3O3S.Na.H/c1-3-19(4-2)15-9-5-13(6-10-15)17-18-14-7-11-16(12-8-14)23(20,21)22;;/h5-12H,3-4H2,1-2H3,(H,20,21,22);;/b18-17+;;
InChIKey
JIQMFPYPPUEBQO-QIKYXUGXSA-N
SMILES
N(C1C=CC(/N=N/C2C=CC(S(O)(=O)=O)=CC=2)=CC=1)(CC)CC.[NaH]
CAS DataBase Reference
62758-12-7(CAS DataBase Reference)
EPA Substance Registry System
Benzenesulfonic acid, 4-[[4-(diethylamino)phenyl]azo]-, sodium salt (62758-12-7)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36-24/25
WGK Germany 
3
TSCA 
Yes
HS Code 
29270000
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
199567
Product name
Ethyl Orange sodium salt
Purity
indicator grade, Dye content 90%
Packaging
100g
Price
$264
Updated
2025/07/31
TCI Chemical
Product number
E0155
Product name
Ethyl Orange
Packaging
25g
Price
$67
Updated
2025/07/31
TRC
Product number
E945638
Product name
Ethyl Orange sodium salt
Packaging
250mg
Price
$45
Updated
2021/12/16
Chem-Impex
Product number
22836
Product name
EthylOrangesodiumsalt,≥90%(dyecontent)
Purity
≥90%(dyecontent)
Packaging
5KG
Price
$652.29
Updated
2021/12/16
American Custom Chemicals Corporation
Product number
DYE0000277
Product name
ETHYL ORANGE
Purity
95.00%
Packaging
25G
Price
$133.35
Updated
2021/12/16
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ETHYL ORANGE Chemical Properties,Usage,Production

Chemical Properties

orange crystalline powder

Uses

Indicator: pH 3.0 (red) to pH 4.5 (yellow)

Purification Methods

Recrystallise it twice from water. [Beilstein 16 IV 511.]

ETHYL ORANGE Preparation Products And Raw materials

Raw materials

Preparation Products

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ETHYL ORANGE Suppliers

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62758-12-7, ETHYL ORANGERelated Search:

Benzenesulfonic acid Ethyl Orange, indicator grade, pure,Ethyl orange Benzenesulfonic acid, 4-[(4-diethylamino)phenylazo]-, potassium salt ETHYL ORANGE Methyl Orange N-ETHYL-4-AMINOAZOBENZENE N,N-Diethyl-1,4-phenylenediamine 4'-Aminoazobenzene-4-sulphonic acid Solvent Yellow 2 Solvent Yellow 56 4-ETHYLMETHYLAMINOAZOBENZENE

  • RESAZURINE REDOX INDICATOR
  • EthylorangeAcs98%
  • EthylOrangeSodium
  • Ethylorange Acs 98%
  • Ethyl Orange sodium salt, pure, 92%
  • Ethyl orange sodium salt, 92%, pure
  • Ethyl Orange sodium salt,4-(4-Diethylaminophenylazo)benzenesulfonic acid sodium salt
  • Ethyl Orange sodiuM salt, pure, 92% 25GR
  • Sodium 4-[[4-(diethylamino)phenyl]azo]benzenesulfonate
  • 4-[[4-(diethylamino)phenyl]azo]-benzenesulfonicacisodiumsalt
  • Benzenesulfonicacid,4-[[4-(diethylamino)phenyl]azo]-,sodiumsalt
  • LABOTEST-BB LT00452773
  • 4-DIETHYLAMINOAZOBENZENE-4'-SULFONIC ACID SODIUM SALT
  • 4-[P-(DIETHYLAMINO)PHENYLAZO]BENZENESULFONIC ACID
  • 4-[4-(DIETHYLAMINO)PHENYLAZO]BENZENESULFONIC ACID, SODIUM SALT
  • sodium p-[[p-(diethylamino)phenyl]azo]benzenesulphonate
  • Diethyl orange
  • ETHYL ORANGE, SODIUM SALT, INDICATOR GRA DE
  • ETHYL ORANGE
  • ETHYL ORANGE SODIUM SALT
  • Benzenesulfonic Acid, P-[[p-(diethylamino)phenyl]azo]-, Sodium Salt
  • Ethyl Orange sodium salt, 92%, indicator
  • Ethyl orange sodium salt, indicator
  • Ethyl orange indicator
  • Ethyl Orange (sodium), indicator grade
  • 62758-12-7
  • C2H52NC6H4NNC6H4SO3Na
  • C16H18N3NaO3S
  • C16H18N3O3SNa
  • Indicator (pH)
  • pH Indicators
  • Organics
  • Analytical Chemistry
  • Indicator (pH)
  • pH Indicators
  • Azo