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ROSOLIC ACID

ROSOLIC ACID Suppliers list
Company Name: Henan DaKen Chemical CO.,LTD.
Tel: +86-371-55531817
Email: info@dakenchem.com
Products Intro: Product Name:ROSOLIC ACID
CAS:603-45-2
Purity:99% Package:100g,500g,1KG,10KG,100KG
Company Name: Henan Tianfu Chemical Co.,Ltd.
Tel: 0371-55170693
Email: info@tianfuchem.com
Products Intro: CAS:603-45-2
Purity:99% Package:500G;1KG;5KG;25KG
Company Name: career henan chemical co
Tel: +86-371-86658258
Email: sales@coreychem.com
Products Intro: Product Name:Aurin
CAS:603-45-2
Purity:95%-99% Package:1kg;1USD
Company Name: J & K SCIENTIFIC LTD.  
Tel: 400-666-7788 +86-10-82848833
Email: jkinfo@jkchemical.com;market6@jkchemical.com
Products Intro: Product Name:p-Rosolic acid, indicator
CAS:603-45-2
Package:25G
Company Name: Meryer (Shanghai) Chemical Technology Co., Ltd.  
Tel: +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
Email: sh@meryer.com
Products Intro: Product Name:Pararosolic Acid
CAS:603-45-2
Remarks:A0598

Lastest Price from ROSOLIC ACID manufacturers

  • Aurin
  • US $1.00 / kg
  • 2018-12-26
  • CAS:603-45-2
  • Min. Order: 1kg
  • Purity: 95%-99%
  • Supply Ability: 1000kg
ROSOLIC ACID Basic information
Product Name:ROSOLIC ACID
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
CAS:603-45-2
MF:C19H14O3
MW:290.31
EINECS:210-041-8
Product Categories:Indicator (pH);pH Indicators;Miscellaneous Natural Products;Analytical Chemistry;Triphenylmethane;Piperidines ,Homopiperidines
Mol File:603-45-2.mol
ROSOLIC ACID Structure
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
Safety Information
Hazard Codes Xi
Risk Statements 36/37/38-36/38
Safety Statements 26-36-37/39
WGK Germany 3
TSCA Yes
HS Code 29145090
MSDS Information
ProviderLanguage
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.]
ROSOLIC ACID Preparation Products And Raw materials
Tag:ROSOLIC ACID(603-45-2) Related Product Information
Phenolphthalein Potassium dichromate 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 Aluminon TIMTEC-BB SBB006515