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AURIN |
| Synonyms. Aurin; 4-(Bis(4-hydroxyphenyl)methylene)-2,5-cyclohexadien-1-one; 4,4'-Dihydroxyfuchsone; Aurine; C.I. 43800; Corallin; Corallin Spirit Soluble; p-Rosolic acid; Spirit Aurine; Rosolic acid; |
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| PRODUCT IDENTIFICATION | |
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CAS RN |
603-45-2 |
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EINECS RN |
210-041-8 |
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FORMULA |
C19H14O3 |
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MOLE WEIGHT |
290.31 |
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H.S CODE |
3204.19.4000 |
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SMILES |
C(\c1ccc(O)cc1)(c1ccc(O)cc1)=C1/C=CC(=O)C=C1 |
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CLASSIFICATION |
Triarylmethane, pH indicator |
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EXTRA NOTES |
Visual Transition Interval:yellow (pH 6.6) To red-pink (pH 8.0) |
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| PHYSICAL AND CHEMICAL PROPERTIES | |
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PHYSICAL STATE. |
brown to red powder |
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MELTING POINT |
309 C |
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BOILING POINT |
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DENSITY |
1.28 |
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SOLUBILITY IN WATER |
Insoluble |
| SOLVENT SOLUBILITY |
Slightly soluble in ether, chloroform. Soluble in ethanol, glacial acetic acid. freely soluble in NaOH, KOH |
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VAPOR DENSITY |
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log P(octanol-water) |
3.03 |
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VAPOR PRESSURE |
1.02E-10 mm Hg |
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AUTOIGNITION TEMP |
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| pK |
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REFRACTIVE INDEX |
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FLASH POINT |
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| STABILITY AND REACTIVITY | |
| STABILITY | Stable under normal conditions. |
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INCOMPATIBLE MATERIALS |
Strong oxidizing agents |
| POLYMERIZATION |
Has not been reported |
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NFPA RATINGS |
Health: 1, Flammability: 1, Reactivity: 0 |
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| EXTERNAL LINKS & GENERAL DESCRIPTION |
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USA.gov - Rosolic acid Wikipedia Linking - Aurin Google Scholar Search - Aurin Drug Information Portal (U.S. National Library of Medicine) - Aurin PubChem Compound Summary - Aurin KEGG (Kyoto Encyclopedia of Genes and Genomes) - Aurin http://www.ncbi.nlm.nih.gov/ - Aurin Material Safety Data Sheet - Aurin |
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| SALES SPECIFICATION | |
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APPEARANCE |
brown to red powder |
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DYE CONTENT |
85% min |
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LOSS ON DRYING |
5% max |
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ABSORPTION |
480 ~ 486nm ((in ethanol + 2ml 1N HCl) λ max |
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| TRANSPORT & REGULATORY INFORMATION | |
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UN NO. |
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| HAZARD CLASS |
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| PACKING GROUP | |
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| SAFETY INFORMATION | |
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HAZARD OVERVIEW |
Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. |
| SIGNAL WORD | Warning |
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PICTOGRAMS |
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HAZARD STATEMENTS |
H315-H319-H335 |
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P STATEMENTS |
P261-P305 + P351 + P338 |
| EC DIRECTIVES |
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| HAZARD CODES |
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RISK PHRASES |
36/37/38 |
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SAFETY PHRASES |
26-36 |
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| PACKING |
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Preserve in light-resistant and well-closed containers |