ROSOLIC ACID
- Product Name
- ROSOLIC ACID
- CAS No.
- 603-45-2
- Chemical Name
- ROSOLIC ACID
- Synonyms
- AURIN;RosoL;AURINE;CORALLIN;CI 43800;AURIN GR;Nsc 7805;Aurin 555;Rosolic aci;CI NO 43800
- CBNumber
- CB0296269
- Molecular Formula
- C19H14O3
- Formula Weight
- 290.31
- MOL File
- 603-45-2.mol
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
- Practically insoluble in water, benzene; freely soluble in ethanol
- form
- Crystalline Powder
- Colour Index
- 43800
- pka
- 6.98(at 25℃)
- 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)
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
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.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405Store locked up.
N-Bromosuccinimide Price
- Product number
- 861324
- Product name
- p-Rosolic acid
- Purity
- Dye content 85%
- Packaging
- 25g
- Price
- $129
- Updated
- 2024/03/01
- Product number
- 861324
- Product name
- p-Rosolic acid
- Purity
- Dye content 85%
- Packaging
- 100g
- Price
- $447
- Updated
- 2024/03/01
- Product number
- RX0175
- Product name
- Rosolic Acid
- Packaging
- 25g
- Price
- $143
- Updated
- 2023/01/07
- Product number
- A0598
- Product name
- Pararosolic Acid
- Packaging
- 25g
- Price
- $65
- Updated
- 2024/03/01
- Product number
- B21737
- Product name
- Rosolic acid
- Packaging
- 25g
- Price
- $79.4
- Updated
- 2024/03/01
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.
Uses
Rosolic acid is used as a pH indicator in the range from 5.0 to 6.8. It acts as an intermediate in the manufacturing dyes. It is involved in the activation of heme oxygenase and in the inhibition of DNA fragmentation. It finds application in the selective isolation of coliform bacteria.
Definition
ChEBI: Aurin is a diarylmethane.
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.]
ROSOLIC ACID Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from ROSOLIC ACID manufacturers
- Product
- Pararosolic Acid 603-45-2
- Price
- US $15.00-10.00/KG
- Min. Order
- 1KG
- Purity
- 99%+ HPLC
- Supply Ability
- Monthly supply of 1 ton
- Release date
- 2021-06-27
- Product
- Aurin 603-45-2
- Price
- US $1.00/kg
- Min. Order
- 1kg
- Purity
- 95%-99%
- Supply Ability
- 1000kg
- Release date
- 2018-12-25