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ROSOLIC ACID

ROSOLIC ACID
ROSOLIC ACID structure
CAS No.
603-45-2
Chemical Name:
ROSOLIC ACID
Synonyms
AURIN;AURINE;CORALLIN;CI 43800;AURIN GR;Nsc 7805;Aurin 555;Rosolic aci;CI NO 43800;Spirit Aurin
CBNumber:
CB0296269
Molecular Formula:
C19H14O3
Formula Weight:
290.31
MOL File:
603-45-2.mol

ROSOLIC ACID 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
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
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xi
Risk Statements  36/37/38-36/38
Safety Statements  26-36-37/39
WGK Germany  3
TSCA  Yes
HS Code  29145090
Symbol(GHS):
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

ROSOLIC ACID price More Price(6)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 861324 p-Rosolic acid Dye content 85% 603-45-2 25g $95 2018-11-20 Buy
Sigma-Aldrich 861324 p-Rosolic acid Dye content 85% 603-45-2 100g $327 2018-11-20 Buy
TCI Chemical A0598 Pararosolic Acid 603-45-2 25g $63 2018-11-22 Buy
Alfa Aesar B21737 Rosolic acid 603-45-2 25g $55.7 2018-11-13 Buy
Alfa Aesar B21737 Rosolic acid 603-45-2 100g $150 2018-11-13 Buy

ROSOLIC ACID Chemical Properties,Uses,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.]

ROSOLIC ACID Preparation Products And Raw materials

Raw materials

Preparation Products


ROSOLIC ACID Suppliers

Global( 120)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 22043 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20786 55
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 19997 58
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933 jkinfo@jkchemical.com;market6@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) sh@meryer.com China 40395 62
3B Pharmachem (Wuhan) International Co.,Ltd. 86-21-50328103 * 801、802、803、804 Mobile:18930552037
86-21-50328109 3bsc@sina.com China 15926 69
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 saleschina@alfa-asia.com China 30291 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 / 800-988-0390
021-67121385 Sales-CN@TCIchemicals.com China 24648 81
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 info@energy-chemical.com China 44187 61
Chengdu XiYa Chemical Technology Co., Ltd. 4008-626-111
028-84752058 sale@xiyashiji.com China 9726 57

View Lastest Price from ROSOLIC ACID manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-12-25 Aurin
603-45-2
US $1.00 / kg 1kg 95%-99% 1000kg career henan chemical co

ROSOLIC ACID Spectrum


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