coomassie(R) violet R 200
coomassie(R) violet R 200
CAS: 4129-84-4
Molecular Formula: C41H46N3NaO6S2
coomassie(R) violet R 200 - Names and Identifiers
| Name | coomassie(R) violet R 200 |
| Synonyms | CI 42650 C.I. 42650 Violet bnp CI NO 42650 ACID VIOLET 17 Acid Violet 17 SERVA VIOLET 17 C.I. Food Violet 1 SPECIAL VIOLET S4B-F Coomassie?Violet R200 COOMASSIE VIOLET R-150 coomassie(R) violet R 150 coomassie(R) violet R 200 COOMASSIE(R) VIOLET R-150 acid violet 17 (C.I. 42650) C.I. Acid Violet 17, sodium salt N-[(1E,4E)-4-([4-(diethylamino)phenyl]{4-[ethyl(3-sulfobenzyl)amino]phenyl}methylidene)cyclohexa-2,5-dien-1-ylidene]-N-(3-sulfobenzyl)ethanaminium sodium 3-({[(1E,4E)-4-([4-(diethylamino)phenyl]{4-[ethyl(3-sulfonatobenzyl)amino]phenyl}methylidene)cyclohexa-2,5-dien-1-ylidene](ethyl)ammonio}methyl)benzenesulfonate |
| CAS | 4129-84-4 |
| EINECS | 223-942-6 |
| InChI | InChI=1/C41H45N3O6S2/c1-5-42(6-2)36-21-15-33(16-22-36)41(34-17-23-37(24-18-34)43(7-3)29-31-11-9-13-39(27-31)51(45,46)47)35-19-25-38(26-20-35)44(8-4)30-32-12-10-14-40(28-32)52(48,49)50/h9-28H,5-8,29-30H2,1-4H3,(H-,45,46,47,48,49,50)/p+1 |
| InChIKey | FJBHGWADYLMEJG-UHFFFAOYSA-M |
coomassie(R) violet R 200 - Physico-chemical Properties
| Molecular Formula | C41H46N3NaO6S2 |
| Molar Mass | 763.94 |
| Density | 1.342[at 20℃] |
| Solubility | Methanol (Very Slightly), Water (Slightly) |
| Appearance | Solid |
| Color | Very Dark Purple |
| BRN | 4114992 |
| Storage Condition | Hygroscopic, Refrigerator, under inert atmosphere |
| Physical and Chemical Properties | Dark cyan powder. Soluble in water, the aqueous solution was purple, adding sodium hydroxide solution was light dark purple. Soluble in ethanol, purple blue. In concentrated sulfuric acid in red light yellow, diluted light green. In concentrated nitric acid showed blue fruit Green. |
coomassie(R) violet R 200 - Risk and Safety
| WGK Germany | 3 |
coomassie(R) violet R 200 - Wavelength
λmax 545 nm
Last Update：2023-08-16 21:32:38
coomassie(R) violet R 200 - Reference Information
| color index | 42650 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | acid violet 4BNS is suitable for dyeing wool and silk and direct printing of wool, silk, nylon and viscose fabrics. It can also be used for coloring leather, paper, aluminum oxide, soap, ink and food. It can also be made into pigments. |
| production method | using 1-(N-ethylaniline) m-toluenesulfonic acid [1-(N-ethylanilino)-m-toluenesulfonic acid], formaldehyde and N,N-diethylaniline as raw materials, first 1-(N-ethylaniline) m-toluenesulfonic acid and formaldehyde are condensed, then oxidized, then condensed with N,N-diethylaniline, and oxidized again, and converted into sodium salt; or the product of the condensation of 1-(N-ethylaniline) m-toluenesulfonic acid and formaldehyde in the presence of N,N-diethylaniline, oxidized with sodium dichromate, can be produced in one step product.. The 1-(N-ethylaniline) m-toluenesulfonic acid solution was adjusted to a pH value of 3 with 30% hydrochloric acid, the 36% formaldehyde solution was added, the temperature was raised to 97-98 ℃, the heat preservation reaction was carried out for 3-6h to the end point, the excess formaldehyde was steamed out with steam, and the temperature was lowered to 50-60 ℃. Add 30% sodium dichromate solution into the above condensation solution, add N,N-diethylaniline after stirring for a certain period of time, and stir for 6-12h at normal temperature, 50 ℃ and 75 ℃ respectively to the end point. Filtration, filtrate is added with 10% refined salt (by volume) for salting out, filtration, filter cake is dried at 70-80 ℃ (about 24-48h), moisture content is less than 5%, and dye finished products are obtained. Other information believes that during the second condensation, adding a certain amount of N,N-dimethylaniline is beneficial to adjust the color light of the dye to obtain standard commercial dyes. The dosage ratio (mass) of N,N-diethylaniline to N,N-dimethylaniline is 1:4.2. You can also add a certain amount of weakly acidic brilliant red B to adjust the color light when the dye is commercialized. |
Last Update：2024-04-10 22:29:15
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