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ROSOLIC ACID

Product Name:
ROSOLIC ACID
CAS No.
603-45-2
Chemical Name:
ROSOLIC ACID
CBNumber:
CB0296269
Molecular Formula:
C19H14O3
Formula Weight:
290.31
MOL File:
603-45-2.mol
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ROSOLIC ACID Property

Melting point:
309°C (decompose)
Boiling point:
372.4°C (rough estimate)
Density 
1.2497 (rough estimate)
refractive index 
1.4200 (estimate)
storage temp. 
Store at room temperature.
solubility 
Solubility Practically insoluble in water, benzene; freely soluble in ethanol
pka
6.98(at 25℃)
form 
Crystalline Powder
Colour Index 
43800
color 
Red-brown to brownish-red
PH Range
6.8(YELLOW)--8.2(RED)
Water Solubility 
Soluble in alcohol, sodium hydroxide, potassium hydroxide and strong acids. Insoluble in water.
λmax
534.6nm, 479.5nm, 482nm
Merck 
14,881
BRN 
2055205
Stability:
Stable. Incompatible with strong oxidizing agents.
Major Application
electrorheological materials, films patterning, antireflective coatings, thermochromic materials, photoresists, film patterning, recording materials, lithium battery, semiconductors, printing materials, inks, corrosion inhibitors, adhesives, drugs, detecting viable cells, treatment of Alzheimer’s disease
CAS DataBase Reference
603-45-2
EPA Substance Registry System
2,5-Cyclohexadien-1-one, 4-[bis(4-hydroxyphenyl)methylene]- (603-45-2)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38-36/38
Safety Statements 
26-36-37/39
WGK Germany 
3
TSCA 
Yes
HS Code 
29145090
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N-Bromosuccinimide Price More Price(6)

Sigma-Aldrich Gold
Product number:
861324
Product name :
p-Rosolic acid
Purity:
Dye content 85%
Packaging:
25g
Price:
$101
Updated:
2020/08/18
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Buy
Sigma-Aldrich Gold
Product number:
861324
Product name :
p-Rosolic acid
Purity:
Dye content 85%
Packaging:
100g
Price:
$348
Updated:
2020/08/18
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Buy
TCI Chemical Gold
Product number:
A0598
Product name :
Pararosolic Acid
Packaging:
25g
Price:
$59
Updated:
2020/06/24
Buy:
Buy
Alfa Aesar Gold
Product number:
B21737
Product name :
Rosolic acid
Packaging:
25g
Price:
$60.2
Updated:
2020/06/24
Buy:
Buy
Alfa Aesar Gold
Product number:
B21737
Product name :
Rosolic acid
Packaging:
100g
Price:
$162
Updated:
2020/06/24
Buy:
Buy
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ROSOLIC ACID Chemical Properties,Usage,Production

Chemical Properties

red crystals or powder

Uses

activates heme oxygenase, anti-oxidative stress, inhibits DNA fragmentation

Uses

A red coloring medium made from phenol or carbolic acid. It is soluble in alcohol and ether but insoluble in water. When fabrics were steeped in this solution, the color was nonactinic and therefore safe for darkrooms, windows, and doorways. Aurin was also mixed with water-soluble gums and brushed on the backs of collodion and silver bromide gelatin plates as an antihalation layer.

Purification Methods

It forms green crystals with a metallic luster, but the colour depends on the solvent used. When recrystallised from brine (saturated aqueous NaCl) acidified with HCl, it forms red needles, but when recrystallised from EtO/AcOH, the crystals have a beetle iridescent green colour. It has been recrystallised from Me2CO (although it dissolves slowly), methyl ethyl ketone, 80-95% AcOH and from AcOH/*C6H6. An aqueous KOH solution is golden yellow, and a 70% H2SO4 solution is deep red in colour. An alternative purification is to dissolve this triphenylmethane dye in 1.5% of aqueous NH3, filter, and heat to 70-80o, then acidify with dilute AcOH by adding it slowly with vigorous stirring, whereby the aurin separates as a brick-red powder or as purplish crystals depending on the temperature and period of heating. Filter off the solid, wash it with H2O and a little dilute AcOH, then H2O again. Stir this solid with Et2O to remove any ketones and allow it to stand overnight in the Et2O, then filter and dry it in air then in a vacuum. [Gomberg & Snow J Am Chem Soc 47 202 1925, Baines & Driver J Chem Soc 123 1216 1923, UV: Burawoy Chem Ber 64 462 1941, Beilstein 8 IV 2646.]

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ROSOLIC ACID Suppliers

Global(132)Suppliers
J & K SCIENTIFIC LTD.
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Meryer (Shanghai) Chemical Technology Co., Ltd.
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21-61259100-
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86-21-61259102
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40268
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3B Pharmachem (Wuhan) International Co.,Ltd.
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Alfa Aesar
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400-610-6006; 021-67582000
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021-67582001/03/05
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TCI (Shanghai) Development Co., Ltd.
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Energy Chemical
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Syntechem Co.,Ltd
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603-45-2, ROSOLIC ACIDRelated Search:

Ammonium metavanadate Ferrous chloride Sodium thiocyanate Trimellitic Anhydride Phenolphthalein Potassium dichromate Aluminon TIMTEC-BB SBB006515 RHODIZONIC ACID DIHYDRATE 4-[(4-hydroxy-3-methylphenyl)(4-hydroxyphenyl)methylene]cyclohexa-2,5-dien-1-one SALOR-INT L162582-1EA ROSOLIC ACID AURINTRICARBOXYLIC ACID P-ROSOLIC ACID SODIUM SALT AURINTRICARBOXYLIC ACID TRISODIUM SALT
  • 4-[Bis(4-hydroxyphenyl)methylene]-2,5-cyclohexadienone, Aurin
  • 4,4'-Dihydroxyfuchsone
  • Corallin Spirit Soluble
  • Spirit Aurin
  • Rosolic acid (CI x 43800)
  • 4-(p,p′-Dihydroxybenzhydrylidine)-2,5-cyclohexadien-1-one
  • Corallin Aurin p-Rosolic Acid
  • Rosolic aci
  • 4-(bis(4-hydroxyphenyl)Methylene)cyclohexa-2,5-dienone
  • PARAROSOLIC ACID
  • P-ROSOLIC ACID
  • 4-[bis(4-hydroxyphenyl)methylene]-5-cyclohexadien-1-one
  • CORALLIN
  • CORALLIN RED
  • CORALLIN YELLOW
  • CI NO 43800
  • CI 43800
  • LABOTEST-BB LT00847601
  • AURIN
  • AURINE
  • 4-(Bis(4-hydroxyphenyl)
  • cyclohexa-2,5-dienone
  • 4-[BIS(4-HYDROXYPHENYL)METHYLENE]-2,5-CYCLOHEXADIEN-1-ONE
  • 4-[BIS(4-HYDROXYPHENYL)METHYLENE]-2,5-CYCLOHEXADIENONE
  • 4-[BIS-(P-HYDROXYPHENYL)METHYLENE]-2,5-CYCLO-HEXADIEN-1-ONE
  • ROSOLIC ACID INDICATOR
  • ROSOLIC ACID (C.I. 43800)
  • ROSOLIC ACID PRACTICAL GRADE
  • ROSOLIC ACID C.I. 43800 INDICATOR FOR MICROSCOPY
  • AURIN FOR MICROSCOPY (Rosolic Acid) C.I. No 43800
  • Para-ROSOLIC ACID INDICATOR
  • AURIN (C.I. 43800)
  • 4-[bis(p-hydroxyphenyl)methylene]cyclohexa-2,5-dien-1-one
  • Roseolic acid
  • AURIN GR
  • RHODIZONIC ACID Dihydrate(P)
  • Aurine、Pararosolic acid
  • 2,5-cyclohexadien-1-one, 4-[bis(p-hydroxyphenyl)methylene]-
  • 4-(p,p′-dihydroxybenzhydrylidene)-2,5-cyclohexadien-1-one
  • 4-[bis(p-hydroxy- Aphenyl)methylene]-2,5-cyclohexadien-1-one
  • Aurin 555
  • Nsc 7805
  • Rosalic Acid
  • Spirit Aurine
  • p-Rosolic acid, indicator
  • 2,5-Cyclohexadien-1-one, 4-bis(4-hydroxyphenyl)methylene-
  • Aurin (p-rosolic acid)
  • RosoL
  • 603-45-2
  • C19H14O3
  • Indicator (pH)
  • pH Indicators
  • Piperidines ,Homopiperidines
  • Indicator (pH)
  • pH Indicators
  • Miscellaneous Natural Products
  • Analytical Chemistry
  • Triphenylmethane