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ROSOLIC ACID Suppliers list
Company Name: Henan DaKen Chemical CO.,LTD.
Tel: +86-371-66670886
Products Intro: Product Name:ROSOLIC ACID
Purity:99% Package:100g,500g,1KG,10KG,100KG
Company Name: Henan Tianfu Chemical Co.,Ltd.
Tel: 0371-55170693
Products Intro: CAS:603-45-2
Purity:99% Package:500G;1KG;5KG;25KG
Company Name: career henan chemical co
Tel: +86-371-86658258
Products Intro: Product Name:Aurin
Purity:95%-99% Package:1kg;1USD
Company Name: Chongqing Chemdad Co., Ltd
Tel: +86-13650506873
Products Intro: Product Name:Aurin
Purity:0.98 Package:1kg,2kg,5kg,10kg,25kg
Tel: 86-18523575427
Products Intro: Product Name:rosolic acid
Purity:0.99 Package:1kg

Lastest Price from ROSOLIC ACID manufacturers

  • Pararosolic Acid
  • US $15.00-10.00 / KG
  • 2021-07-02
  • CAS:603-45-2
  • Min. Order: 1KG
  • Purity: 99%+ HPLC
  • Supply Ability: Monthly supply of 1 ton
  • Aurin
  • US $1.00 / kg
  • 2019-07-06
  • CAS:603-45-2
  • Min. Order: 1kg
  • Purity: 95%-99%
  • Supply Ability: 1000kg
ROSOLIC ACID Basic information
Synonyms: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
Product Categories:Piperidines ,Homopiperidines;Indicator (pH);Miscellaneous Natural Products;Analytical Chemistry;pH Indicators;Triphenylmethane
Mol File:603-45-2.mol
ROSOLIC ACID Chemical Properties
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
pka6.98(at 25℃)
form Crystalline Powder
Colour Index 43800
color Red-brown to brownish-red
PH Range6.8(YELLOW)--8.2(RED)
Water Solubility Soluble in alcohol, sodium hydroxide, potassium hydroxide and strong acids. Insoluble in water.
λmax534.6nm, 479.5nm, 482nm
Merck 14,881
BRN 2055205
Stability:Stable. Incompatible with strong oxidizing agents.
Major Applicationelectrorheological 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 Reference603-45-2
EPA Substance Registry System2,5-Cyclohexadien-1-one, 4-[bis(4-hydroxyphenyl)methylene]- (603-45-2)
Safety Information
Hazard Codes Xi
Risk Statements 36/37/38-36/38
Safety Statements 26-36-37/39
WGK Germany 3
HS Code 29145090
MSDS Information
SigmaAldrich English
ACROS English
ALFA English
ROSOLIC ACID Usage And Synthesis
Chemical Propertiesred crystals or powder
Usesactivates heme oxygenase, anti-oxidative stress, inhibits DNA fragmentation
UsesA 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 MethodsIt 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.]
Tag:ROSOLIC ACID(603-45-2) Related Product Information
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