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ChemicalBook--->CAS DataBase List--->522-75-8

522-75-8

522-75-8 Structure

522-75-8 Structure
IdentificationMore
[Name]

Vat Red 41
[CAS]

522-75-8
[Synonyms]

2-(3-oxobenzo[b]thien-2(3h)-ylidene)-benzo[b]thiophene-3(2h)-one
C.I. 73300
c.i. disperse red 364
C.I. Solvent Red 242
FLUORESCENT DYE, RED
FLUORESCENT RED DYE
THIOINDIGO
VAT RED 41
(delta(sup2,2’(3h,3’h))-bibenzo(b)thiophene)-3,3’-dione
2-(3-oxobenzo[b]thien-2(3h)-ylidene)-benzo[b]thiophen-3(2h)-on
2-(3-oxobenzo[b]thien-2(3H)-ylidene)-Benzo[b]thiophen-3(2H)-one
4,4’-diisothioindigo
antinoloredb
c.i.vatred41
cibapinkb
durindoneprintingredb
durindoneredb
durindoneredbp
helianered5b
helindonredbb
[EINECS(EC#)]

208-336-1
[Molecular Formula]

C16H8O2S2
[MDL Number]

MFCD00191692
[Molecular Weight]

296.36
[MOL File]

522-75-8.mol
Chemical PropertiesBack Directory
[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)
[Colour Index ]

73300
[form ]

powder to crystal
[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]

522-75-8(EPA Substance)
Safety DataBack Directory
[Risk Statements ]

R36/37/38:Irritating to eyes, respiratory system and skin .
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
[RTECS ]

DT4330000
[HS Code ]

2934.99.4400
Raw materials And Preparation ProductsBack Directory
[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
Hazard InformationBack Directory
[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.
[Flammability and Explosibility]

Notclassified
[Properties and Applications]

Standard

Ironing Fastness

Light Fastness

Persperation Fastness

Washing Fastness

Fading

Stain

Fading

Stain

Fading

Stain

AATCC

5

5

7

5

5

5

5

[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.]
Spectrum DetailBack Directory
[Spectrum Detail]

Vat Red 41(522-75-8)ESR
Well-known Reagent Company Product InformationBack Directory
[TCI AMERICA]

Thioindigo(522-75-8)
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