Home Categories Biochemical Engineering Rosolic acid
A7119312

Rosolic acid , Indicator level , 603-45-2

Synonym(s):
4-[Bis(4-hydroxyphenyl)methylene]-2,5-cyclohexadienone;Aurin

CAS NO.:603-45-2

Empirical Formula: C19H14O3

Molecular Weight: 290.31

MDL number: MFCD00001624

EINECS: 210-041-8

Pack Size Price Stock Quantity
5G RMB36.80 In Stock
25G RMB148.80 In Stock
100G RMB436.00 In Stock
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Update time: 2022-07-08

PRODUCT 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  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)

Description and 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.

Safety

Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P280a-P304+P340-P305+P351+P338-P405-P501a-P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313
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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