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CAS No.: | 522-75-8 |
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Name: | Vat Red 41 |
Molecular Structure: | |
Formula: | C16H8O2S2 |
Molecular Weight: | 296.37 |
Synonyms: | Thioindigo(6CI);[D2,2'(3H,3'H)-Bibenzo[b]thiophene]-3,3'-dione(7CI,8CI);Antinolo Red B;C.I. 73300;C.I. Disperse Red 364;C.I. Solvent Red242;C.I. Vat Red 41;Ciba Pink B;Disperse Red 364;Durindone Printing Red B;Durindone Red B;Durindone Red BP;Helindon Red BB;Isothioindigo;Kenawax Fluorescent Red 3BYP;Plast Red D 54;SamaronBrilliant Pink 5B;Solvent Red 242;Thioindigo Red B;Thioindigo red C;Tyrian Red A 5B;Vat Red 5B; |
EINECS: | 208-336-1 |
Density: | 1.544 g/cm3 |
Melting Point: | 280°C(lit.) |
Boiling Point: | 409.2 °C at 760 mmHg |
Flash Point: | 177 °C |
Solubility: | 1mg/L |
Risk Codes: | 36/37/38 |
Safety: | 26-36 |
PSA: | 84.74000 |
LogP: | 4.17520 |
Conditions | Yield |
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With (2,2':6',2''-terpyridine)(pyridine-2-carboxylate)iron(II)chloride; sodium hydroxide In water; acetonitrile | 95% |
Conditions | Yield |
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In water at 20℃; for 0.666667h; Sonication; | 36% |
Conditions | Yield |
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In tetrahydrofuran for 6h; Reflux; Inert atmosphere; | A 35% B 30% |
thioindigo
3,3'-bis-sulfooxy-[2,2']bi[benzo[b]thiophenyl]
Conditions | Yield |
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With chlorosulfonic acid; sodium acetate; zinc In ethyl acetate at 40℃; for 0.5h; |
Conditions | Yield |
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With sodium acetate; zinc In ethyl acetate at 40℃; |
Conditions | Yield |
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With sodium acetate; zinc In ethyl acetate at 40℃; for 0.5h; |
Conditions | Yield |
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With sodium acetate; zinc In ethyl acetate at 40℃; for 0.5h; |
IUPAC Name: 4,4'-Diisothioindigo
The MF of 4,4'-Diisothioindigo (522-75-8) is C16H8O2S2.
The MW of 4,4'-Diisothioindigo (522-75-8) is 296.36.
Synonyms of 4,4'-Diisothioindigo (522-75-8): 2-(3-Oxobenzo(b)thien-2(3H)-ylidene)benzo(b)thiophene-3(2H)-one ; Antinolo red B ; Benzo(b)thiophen-3(2H)-one, 2-(3-oxobenzo(b)thien-2(3H)-ylidene)- ; 4,4'-Diisothioindigo
Product Categories: Azobenzene, etc. (Photochromic Compounds);Functional Materials;Photochromic Compounds;Solvent Dyestuff
Index of Refraction: 1.797
EINECS: 208-336-1
Density:: 1.544 g/ml
Flash Point: 177 °C
Boiling Point: 409.2 °C
Colour Index: 73300
4,4'-Diisothioindigo (522-75-8) is mainly used for coloring a variety of plastics such as polystyrene, polycarbonate, ABS resin, cellulose acetate and so on. Can also be used for polyester fiber puree color.
1. | ipr-rat LD50:4170 mg/kg | GISAAA Gigiena i Sanitariya. 50 (8)(1985),91. |
Reported in EPA TSCA Inventory.
Mildly toxic by intraperitoneal route. When heated to decomposition it emits toxic vapors of SOx.
Safety information of 4,4'-Diisothioindigo (522-75-8):
Risk Statements
36/37/38 Irritating to eyes, respiratory system and skin
Safety Statements
26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36 Wear suitable protective clothing
RTECS DT4330000