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Thioindigo

Thioindigo structure

CAS No:
522-75-8
Formula:
C16H8O2S2
Chemical Name:
Thioindigo
Synonyms:
Benzo[b]thiophen-3(2H)-one,2-(3-oxobenzo[b]thien-2(3H)-ylidene)-;Thioindigo;[Δ2,2′(3H,3′H)-Bibenzo[b]thiophene]-3,3′-dione;2-(3-Oxobenzo[b]thien-2(3H)-ylidene)benzo[b]thiophen-3(2H)-one;C.I. 73300;Antinolo Red B;Ciba Pink B;Durindone Printing Red B;Durindone Red B;Durindone Red BP;Heliane Red 5B;Helindon Red BB;Tetra Pink B;Thioindigo Red B;Tina Pink B;Tyrian Red A 5B;Vat Red 5B;C.I. Vat Red 41;Isothioindigo;Thioindigo Red S;C.I. Disperse Red 364;Vat Red 41;Disperse Red 364;Samaron Brilliant Pink 5B;Hostasol Red 5B;C.I. Solvent Red 242;Solvent Red 242;Thioindigo red C;Kenawax Fluorescent Red 3BYP;Plast Red D 54;Disperse Red TR 16;KP Plast Brilliant Red MG;389105-46-8
Categories:
Dyes and Pigments > Dye

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Thioindigo Basic Attributes

Molecular Weight：

296.36

Exact Mass：

296.36

EC Number：

208-336-1

DSSTox ID：

DTXSID8060169

HScode：

3204159000

Characteristics

PSA：

84.74000

XLogP3：

4.17520

Density：

1.544 g/cm3

Melting Point：

359 °C

Boiling Point：

409.2ºC at 760 mmHg

Flash Point：

177ºC

Refractive Index：

1.797

Safety Information

hazard class code：

36/37/38

safety instructions：

26-36

RTECS Number：

DT4330000

Drug Information

MeSH Entry Terms：

(delta-2,2'(3H,3'H)-bibenzo(b)thiophene)-3,3'-dione

Thioindigo Use and Manufacturing

Methods of Manufacturing

Take anthranilic acid as raw material. Firstly, it is diazotized and sulfhydrylized, and then condensed with sodium chloroacetate, then the ring is closed under alkaline conditions, and the product is oxidized. After filtering, drying and crushing, the finished product is obtained.

Uses

Fluorescent Red 5B is mainly used for coloring various plastics, such as polystyrene, polycarbonate, ABS resin, acetate fiber, etc. It can also be used for coloring of polyester fiber.

Manufacturing Info：

Benzo[b]thiophen-3(2H)-one, 2-(3-oxobenzo[b]thien-2(3H)-ylidene)-: ACTIVE

Computed Properties

Molecular Weight:296.4
XLogP3:4.1
Hydrogen Bond Acceptor Count:4
Exact Mass:295.99657184
Monoisotopic Mass:295.99657184
Topological Polar Surface Area:84.7
Heavy Atom Count:20
Complexity:453
Undefined Bond Stereocenter Count:1
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Recommended Suppliers of Thioindigo

Zhanjiu (Shanghai) Industrial Co., Ltd Contact Supplier

CN
2 YRS

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Trader Supplier of Sodium Hydrosulfite,Sodium Percarbonate,NONIONIC SURFACTANT,VAT DYES

CAS 522-75-8 C. I Vat Red Dyes 5b Solvent Fluorescent Red 242 Thioindigo

CAS No.: 522-75-8

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