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Direct Red 75

Direct Red 75 structure

CAS No:
2829-43-8
Formula:
C33H26N8O15S4.4Na
Chemical Name:
Direct Red 75
Synonyms:
2-Naphthalenesulfonic acid,5,5′-[carbonylbis[imino(2-sulfo-4,1-phenylene)-2,1-diazenediyl]]bis[6-amino-4-hydroxy-,sodium salt (1:4);C.I. Direct Red 75,tetrasodium salt;2-Naphthalenesulfonic acid,5,5′-[carbonylbis[imino(2-sulfo-4,1-phenylene)azo]]bis[6-amino-4-hydroxy-,tetrasodium salt;C.I. Direct Red 75;Chlorazol Fast Pink;C.I. 25380;Aizen Primula Pink 2BLH;Aizen Primula Pink 2BLH special;Amanil Fast Pink 2B;Atlantic Fast Pink 2BL;Belamine Fast Pink BL;Benzanil Fast Pink BK;Calcodur Pink 2BL;Chloramine Fast Pink BK;Chlorantine Fast Pink 2B;Chlorantine Fast Red 2B;Chlorazol Fast Pink BK;Chrome Leather Pink B;Diazol Light Pink 2B;Diphenyl Blue Red B;Diphenyl Fast Pink BF;Diphenyl Fast Pink BK;Direct Fast Pink B;Direct Fast Pink 4BL;Direct Light Pink M 2BL;Eliamina Pink 2BL;Fastusol Pink BBA-CF;Fastusol Pink BBL;Fenaluz Pink 2B;Helion Pink 2B;Paranol Fast Pink 2BL;Pyrazoline Pink 4BL;Saturn Pink 2B;Sirius Pink 4BL;Sirius Pink BB;Sirius Supra Rubine B;Solantine Pink 4BL;Solar Rubine CB;Solius Pink 2B;Suprazo Pink 2B;Suprexcel Pink BL;Tertrodirect Fast Rose 2B;Triantine Fast Pink B;Triantine Light Pink B;Direct Fast Pink S;Direct Fast Rose S;Direct Lightfast Pink S;Direct Lightfast Rose S;Lightfast Rose S;Diphenyl Pink EBE;Benzo Fast Pink 2BL;Chlorazol Fast Pink 2BL;Sirius Rose BB;Calcodur Pick 2BL;Sirius Pink 2B;Direct Red 75;Direct Pink 2B;116688-12-1;12040-62-9
Categories:
Dyes and Pigments > Dye

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Direct Red 75 Basic Attributes

Molecular Weight：

990.79

Exact Mass：

989.967834

EC Number：

220-593-1

NSC Number：

11244

Characteristics

PSA：

445.39000

XLogP3：

10.29140

Appearance：

Powder

Density：

1.9g/cm3

Refractive Index：

1.82

Safety Information

wgk germany：

Direct Red 75 Use and Manufacturing

Methods of Manufacturing

Take p-nitroaniline o-sulfonic acid and gamma acid as the main raw materials, firstly diazotize p-nitroaniline o-sulfonic acid, couple with gamma acid, after reduction, with phosgene or bis(trichloromethyl) carbonate The product is obtained by condensation, and the finished product is obtained by salting out, filtering, drying and crushing.

Uses

Direct light fast pink BK is used for dyeing and direct printing of cotton and viscose fiber fabrics, and it is pink. It has good level dyeing and migration, and the dyeing rate is average. After dyeing, it is usually treated with fixing agent Y to improve the wet fastness, but the color light is slightly blue. It is also used for the dyeing and printing of silk, wool, and nylon fabrics, as well as the high-temperature dyeing of polyester and viscose blended fabrics with disperse dyes.

Manufacturing Info：

2-Naphthalenesulfonic acid, 5,5'-[carbonylbis[imino(2-sulfo-4,1-phenylene)-2,1-diazenediyl]]bis[6-amino-4-hydroxy-, sodium salt (1:4): ACTIVE

Computed Properties

Molecular Weight:902.9
XLogP3:1.5
Hydrogen Bond Donor Count:10
Hydrogen Bond Acceptor Count:21
Rotatable Bond Count:10
Exact Mass:902.04004685
Monoisotopic Mass:902.04004685
Topological Polar Surface Area:434
Heavy Atom Count:60
Complexity:1910
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes