Solvent Red 49
3',6'-bis(diethylamino)spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-3-one
CAS: 509-34-2
Molecular Formula: C28H30N2O3
Solvent Red 49 - Names and Identifiers
| Name | 3',6'-bis(diethylamino)spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-3-one |
| Synonyms | Red 5B Oil Pink B SOLVENT RED BN Solvent Red 49 D AND C RED NO 19 D AND C RED NO 37 3',6'-bis(diethylamino)-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one Spiroisobenzofuran-1(3H),9-9Hxanthen-3-one, 3,6-bis(diethylamino)- 3',6'-bis(diethylamino)spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-3-one 3',6'-bis(diethylamino)- Spiro[isobenzofuran-1(3H),9'-(9H)xanthen]-3-one |
| CAS | 509-34-2 |
| EINECS | 208-096-8 |
| InChI | InChI=1/C28H30N2O3/c1-5-29(6-2)19-13-15-23-25(17-19)32-26-18-20(30(7-3)8-4)14-16-24(26)28(23)22-12-10-9-11-21(22)27(31)33-28/h9-18H,5-8H2,1-4H3 |
Solvent Red 49 - Physico-chemical Properties
| Molecular Formula | C28H30N2O3 |
| Molar Mass | 442.55 |
| Density | 1.1536 (rough estimate) |
| Boling Point | 553.14°C (rough estimate) |
| Flash Point | 339.1°C |
| Water Solubility | 4.83g/L at 30℃ |
| Vapor Presure | 0Pa at 25℃ |
| Appearance | Fine Crystalline Powder |
| Color | Lilac |
| pKa | 5.80±0.20(Predicted) |
| Storage Condition | Room Temprature |
| Refractive Index | 1.5800 (estimate) |
| Physical and Chemical Properties | Soluble in water and ethanol blue red, with strong fluorescence, slightly soluble in acetone, soluble in ethylene glycol ether. In concentrated sulfuric acid was yellow-brown, with strong green fluorescence, diluted red, then turned blue red and orange. When the aqueous solution was heated after the addition of sodium hydroxide, a rose-red flocculent precipitate was produced. |
Solvent Red 49 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R37/38 - Irritating to respiratory system and skin. R41 - Risk of serious damage to eyes |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37 - Wear suitable protective clothing and gloves. |
| WGK Germany | 3 |
| HS Code | 32041300 |
Solvent Red 49 - Reference Information
| color index | 45170:1 |
| LogP | 3.649 at 25℃ |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| introduction | rhodamine B (solvent red 49) is a non-azo pigment, which includes goo ton, triarylmethane, anthraquinone, etc. Xanthene dyes, also known as xanthene dyes, dyes with xanthene rings, are the first acidic eosin discovered by H.Coro in 1874. This type of dye is similar to diphenylmethane and triphenylmethane derivatives. |
| application | solvent red 49 is mainly used for industrial dyeing and is fat soluble. rhodamine B (solvent red 49) has strong fluorescence in the solution and is used as cell fluorescent staining agent, colored glass, characteristic fireworks and firecrackers in the laboratory. It has also been used as a condiment (mainly chili powder and chili oil) stain. It was once used as a food additive, but later experiments proved that Rhodamine B (solvent red 49) can cause cancer and is now not allowed to be used as food stain. |
| detection technology | currently, the detection technologies for rhodamine B (solvent red 49) at home and abroad mainly include mass spectrometry, fluorescence, electrochemiluminescence and ultraviolet-visible spectroscopy. Although these methods have high detection accuracy, the sample pretreatment is complicated, the instruments are expensive, professional operators are required, and it takes a long time. Electrochemical method has become an excellent method for on-site detection of rhodamine B (solvent red 49) due to its high sensitivity, easy miniaturization and low cost. The selection of suitable electrode materials has important practical significance and academic value for improving the selectivity, sensitivity and reproducibility of rhodamine B (solvent red 49) detection. |
| use | oil-soluble red BN is colored with grease, candle, rubber, plastic and transparent paint. |
| Production method | Using 2-hydroxy-N, N-diethylaniline and phthalic anhydride as raw materials, the two are condensed in the presence of sulfuric acid, and The product is obtained by alkali dissolution and acid dissolution treatment. The finished product is filtered and dried. |
Last Update：2024-04-09 21:54:55
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