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| | Solvent Red 49 Basic information |
| Product Name: | Solvent Red 49 | | Synonyms: | D AND C RED NO 19;D AND C RED NO 37;3',6'-bis(diethylamino)spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-3-one;RHODAMINE B BASE 99%;Oil Pink B;Spiroisobenzofuran-1(3H),9-9Hxanthen-3-one, 3,6-bis(diethylamino)-;SOLVENT RED BN;3',6'-bis(diethylamino)- Spiro[isobenzofuran-1(3H),9'-(9H)xanthen]-3-one | | CAS: | 509-34-2 | | MF: | C28H30N2O3 | | MW: | 442.55 | | EINECS: | 208-096-8 | | Product Categories: | Solvent Dyestuff;Organics | | Mol File: | 509-34-2.mol |  |
| | Solvent Red 49 Chemical Properties |
| Boiling point | 553.14°C (rough estimate) | | density | 1.1536 (rough estimate) | | vapor pressure | 0Pa at 25℃ | | refractive index | 1.5800 (estimate) | | pKa | 5.80±0.20(Predicted) | | form | Fine Crystalline Powder | | Colour Index | 45170:1 | | color | Lilac | | Water Solubility | 4.83g/L at 30℃ | | LogP | 3.649 at 25℃ | | CAS DataBase Reference | 509-34-2(CAS DataBase Reference) | | EPA Substance Registry System | C.I. Solvent Red 49 (509-34-2) |
| | Solvent Red 49 Usage And Synthesis |
| Chemical Properties | LILAC FINE CRYSTALLINE POWDER | | Uses | Rhodamine B base is a fluorescent biological staining dye. Rhodamine B base is also used as a laser dye, tunable around 610 nm with the fluorescence yield being temperature dependent. Dyes and metabolites, Environmental Testing | | Purification Methods | Major impurities are partially dealkylated compounds not removed by recrystallisation. Purify the dye by chromatography, using ethyl acetate/isopropanol/ammonia (conc)(9:7:4, RF 0.75 on Kieselgel G). It has also been crystallised from a concentrated solution in MeOH by slow addition of dry diethyl ether; or from EtOH containing a drop of conc HCl by slow addition of ten volumes of dry diethyl ether. The solid is washed with ether and air dried. The dried material has also been extracted with *benzene to remove oil-soluble material prior to recrystallisation. Store it in the dark. [Beilstein 18 II 486, 18 III/IV 8246, 19/8 V 669.] | | Properties and Applications |
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TEST ITEMS
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SPECIFICATION
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APPEARANCE
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PINK POWDER
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SHADE
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BLUISH
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HEAT RESISTANCE
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180 °C min
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LIGHT FASTNESS
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4-5
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ACID RESISTANCE
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4
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ALKALI RESISTANCE
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5
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WATER RESISTANCE
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5
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DENSITY
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1.30 g/cm
3
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RESIDUE ON 80 MESH
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5.0% max
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WATER SOLUBLE
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1.0% max
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VOLATITE 105 °C
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1.0% max
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TINTING STRENGTH
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100-105 %
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| | Solvent Red 49 Preparation Products And Raw materials |
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