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Vat Red 41
Vat Red 41 / CAS : 522-75-8
| Appearance | Dark red powder. Insoluble in water, slightly soluble in ethanol, easily soluble in organic solvents such as benzene, toluene, xylene, chlorobenzene, chloroform and DMF. It is a fluorescent red solution in each solvent and a brilliant blue-green in concentrated sulfuric acid. After dilution, it produces a fluorescent blue-red fluffy precipitate, which is red-yellow in alkaline insurance powder solution and light yellow in acidic solution. | UN | 0.0 |
| HS | 32041590 | DG Class | 0.0 |
| Synonyms | Durindone Red Bp; Durindone Red B; Antinolo Red B; Ciba Pink B; Helindon Red Bb; Benzo[B]Thiophen-3(2H)-One, 2-(3-Oxobenzo[B]Thien-2(3H)-Ylidene)-; Isothioindigo; Thioindigo Red S; Fluorescent Red Dye; Tetra Pink B; Thioindigo; Thioindigo Red B; 2-(3-Oxobenzo[B]Thien-2(3H)-Ylidene)-Benzo[B]Thiophene-3(2H)-One; Fluorescent Dye, Red; C.I. 73300; C.I. Disperse Red 364; C.I. Solvent Red 242 | ||
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Properties
Summary
Formula
C16H8O2S2
Molecular Mass
296.36400
Exact Mass
295.99700
PSA
84.74000
Logp
4.17520
IUPAC
(2E)-2-(3-oxo-1-benzothiophen-2-ylidene)-1-benzothiophen-3-one
SMILES
C1=CC=C2C(=C1)C(=O)/C(=C/3\C(=O)C4=CC=CC=C4S3)/S2
Attribute classification
Matter Classification
organic
Category
Dyestuffs and Pigments > Vat Dyes
Chemical and Physical Properties
Melting Point
280°C(lit.)
Density
1.3686 (rough estimate)
Boiling Point
407.96°C (rough estimate)
Flash Point
177ºC
Appearance
Dark red powder. Insoluble in water, slightly soluble in ethanol, easily soluble in organic solvents such as benzene, toluene, xylene, chlorobenzene, chloroform and DMF. It is a fluorescent red solution in each solvent and a brilliant blue-green in concentrated sulfuric acid. After dilution, it produces a fluorescent blue-red fluffy precipitate, which is red-yellow in alkaline insurance powder solution and light yellow in acidic solution.
Export information
HS Code
32041590
Export Rebate
0%
UN No.
0.0
DG-Class
0.0
Risk Code
R36/37/38
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