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ACID BLUE 25 | CAS 6408-78-2

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ACID BLUE 25 Basic information

Product Name:ACID BLUE 25
Synonyms:ACID ANTHRACENE BLUE A;abcol brilliant blue rb;2-Anthracenesulfonic acid, 1-amino-9,10-dihydro-9,10-dioxo-4-(phenylamino)-, monosodium salt;alizarine saphirol A;Acid Blue AS;Acid Blue GRL;Acid Light Blue A;Acid Naphthol Blue
CAS:6408-78-2
MF:C20H13N2NaO5S
MW:416.38
EINECS:229-068-1
Product Categories:Dyes and Pigments;Organics;A;Stains and Dyes;Stains&Dyes, A to
Mol File:6408-78-2.mol

ACID BLUE 25 Chemical Properties

Melting point >300℃
Boiling point 846.88℃[at 101 325 Pa]
density 1.491[at 20℃]
vapor pressure 0Pa at 25℃
storage temp. -20°C, Inert atmosphere
solubility DMSO (Slightly), Water (Slightly)
form Powder
Colour Index 62055
color Blue
Water Solubility 2.79g/L at 20℃
λmax600 nm
ε(extinction coefficient)≥10000 at 254-260nm in ethanol at 0.03g/L
LogP-0.497 at 20℃
CAS DataBase Reference6408-78-2(CAS DataBase Reference)
EPA Substance Registry SystemC.I. Acid Blue 25 (6408-78-2)

Safety Information

Hazard Codes Xi
Risk Statements 36/37/38
Safety Statements 26-36
WGK Germany 3

MSDS Information

ACID BLUE 25 Usage And Synthesis

UsesFlammability and ExplosibilityToxics Screening Level
Chemical PropertiesBlue powder. Soluble in acetone and alcohol, soluble in o-chlorophenol, slightly soluble in acetone, alcohol, pyridine, slightly soluble in benzene and tetrahydronaphthalene, insoluble in nitrobenzene and xylene. Dark blue in concentrated sulfuric acid, produces blue precipitate after dilution.
Acid Blue 25, is used for dyeing wool, silk and mixed fabric and printing them in a direct method.Dyes and metabolites.
Preparation(a) 1-Amino-2,4-dibromoanthracene-9,10-dione?with aniline condensation, its product 1-amino-4- anilino-2-bromo-anthraquinone?in phenol in pressure with aqueous sodium sulfite, were hot. (b) the 1-Amino-4-bromo-9,10-dioxo-9,10-dihydroanthracene-2-sulfonic acid (sodium) in water medium copper salt as the catalyst used with aniline condensation.
Non flammable
Properties and Applicationsblue. Blue powder. The little blue soluble in water, but soluble in acetone, ethanol, slightly soluble in benzene, four hydrogen naphthalene, insoluble in nitrobenzene and xylene. Meet strong sulfuric acid as dark, after diluted blue precipitation. Mainly used for dyeing nylon, polyamide for supporting the dye. Can also be used for wool, silk and blended fabric dyeing and printing directly. Can also be used in leather, electrical-controlled aluminum soap and color.
Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 5-6 3-4 4 3 3
AATCC 4-5 1-2 1-2 4 1-2 2
The ITSL for C.I.acid blue has been changed from 0.04 μg/m3 to 0.1 μg/m3 based on annual averaging time.

ACID BLUE 25 Preparation Products And Raw materials

Raw materialsWater-->1,4-Dihydroxyanthraquinone-->Bromaminic acid-->p-Toluidine-->1-Amino-2,4-dibromoanthraquinone-->Phenol-->Aniline-->Bromaminic acid

Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.

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