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| OEM | OEM Services Provided |
| Feature | Good stability,Easy to Use |
| Classification | Dyes and Pigments |
| Advantage | Professional, Fast Delivery, Customizable | Samples | Apply for free，Contact us now. |
| Product Name: | Vat Red 41 |
| Synonyms: | 2-(3-oxobenzo[b]thien-2(3h)-ylidene)-benzo[b]thiophene-3(2h)-one;FLUORESCENT DYE, RED;FLUORESCENT RED DYE;C.I. 73300;c.i. disperse red 364;C.I. Solvent Red 242;THIOINDIGO;VAT RED 41 |
| CAS: | 522-75-8 |
| MF: | C16H8O2S2 |
| MW: | 296.36 |
| EINECS: | 208-336-1 |
| Product Categories: | Azobenzene, etc. (Photochromic Compounds);Functional Materials;Photochromic Compounds;Solvent Dyestuff |
| Mol File: | 522-75-8.mol |
| Melting point | 280°C(lit.) |
| Boiling point | 407.96°C (rough estimate) |
| density | 1.3686 (rough estimate) |
| vapor pressure | 0Pa at 25℃ |
| refractive index | 1.5341 (estimate) |
| storage temp. | Storage temp. 2-8°C |
| form | powder to crystal |
| Colour Index | 73300 |
| color | Orange to Brown to Dark purple |
| Water Solubility | 1mg/L |
| LogP | 3.53 |
| CAS DataBase Reference | 522-75-8(CAS DataBase Reference) |
| EPA Substance Registry System | Benzo[b]thiophen-3(2H)-one, 2-(3-oxobenzo[b]thien-2(3H)-ylidene)- (522-75-8) |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| RTECS | DT4330000 |
| HS Code | 2934.99.4400 |
| Uses | Thioindigo (cas# 522-75-8) is a useful research chemical. This compound is a dye that is used as an aqueous ink jet for producing recordings and in recyclable food trays. | |||||||||||||||||||||
| Not classified | ||||||||||||||||||||||
| Purification Methods | Adsorb it on silica gel from CCl4/*benzene (3:1), elute with *benzene, evaporate, crystallise the residue from CHCl3 and dry it at 60-65o [Wyman & Brode J Am Chem Soc 73 1487 1951; this paper also gives details of purification of other thioindigo dyes]. [Beilstein 19 H 137, 19 I 690, 19 II 192, 19 III/IV 2091.] | |||||||||||||||||||||
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| Raw materials | Anthranilic acid-->Sodium chloroacetate-->2-(CARBOXYMETHYLTHIO)BENZOIC ACID-->1-BENZOTHIOPHEN-3(2H)-ONE-->Thiosalicylic acid-->Anthranilic acid |
| Preparation Products | 6-chloro-2-(6-chloro-3-oxobenzo[b]thien-2(3H)-ylidene)benzo[b]thiophene-3(2H)-one |
Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.
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