52239-04-0

Basic information

• Product Name: methyl N-ethyl-N-[4-[(5-nitro-2,1-benzisothiazol-3-yl)azo]phenyl]-beta-alaninate
• Synonyms: methyl N-ethyl-N-[4-[(5-nitro-2,1-benzisothiazol-3-yl)azo]phenyl]-beta-alaninate;C.I. Disperse Blue 148 press cake;.beta.-Alanine, N-ethyl-N-4-(5-nitro-2,1-benzisothiazol-3-yl)azophenyl-, methyl ester;Disperse blue 148 (C.I. 11124);-Alanine, N-ethyl-N-[4-[(5-nitro-2, 1-benzisothiazol-3-yl)azo]phenyl]-, methyl ester;3-[[4-(5-Nitro-2,1-benzisothiazole-3-ylazo)phenyl]ethylamino]propionic acid methyl ester;N-Ethyl-N-[4-[(5-nitro-2,1-benzisothiazol-3-yl)azo]phenyl]-β-alanine methyl ester;methyl N-ethyl-N-[4-[(5-nitro-2,1-benzisothiazol-3-yl)azo]phenyl]-β-alaninate
• CAS NO: 52239-04-0
• Molecular Formula: C₁₉H₁₉N₅O₄S
• Molecular Weight: 413.45026
• EINECS: 257-779-7
• Product Categories: Organics
• Mol File: 52239-04-0.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 597.5 °C at 760 mmHg
• Flash Point: 315.2 °C
• Appearance: /
• Density: 1.38 g/cm³
• PKA: 2.19±0.50(Predicted)
• CAS DataBase Reference: methyl N-ethyl-N-[4-[(5-nitro-2,1-benzisothiazol-3-yl)azo]phenyl]-beta-alaninate(CAS DataBase Reference)
• NIST Chemistry Reference: methyl N-ethyl-N-[4-[(5-nitro-2,1-benzisothiazol-3-yl)azo]phenyl]-beta-alaninate(52239-04-0)
• EPA Substance Registry System: methyl N-ethyl-N-[4-[(5-nitro-2,1-benzisothiazol-3-yl)azo]phenyl]-beta-alaninate(52239-04-0)

Safety Data

• Hazardous Substances Data: 52239-04-0(Hazardous Substances Data)

Usage

Preparation

5-Nitro-1,3-dihydrobenzo[c]isothiazol-3-amine diazo, and Methyl 3-(ethyl(phenyl)amino)propanoate?coupling.

Flammability and Explosibility

Notclassified

Properties and Applications

blue, red light blue. Standard(Vinegar fiber) Ironing Fastness Light Fastness Persperation Fastness Washing Fastness Fading Stain Fading Stain Fading Stain ISO 5-6 4-5 4 4 3-4

Standard(Vinegar fiber)

Ironing Fastness

Fading

Stain

Upstream product

• 38954-40-4 N-ethyl-N-[2-(methoxycarbonyl)ethyl]aniline 
• 21608-06-0 N-ethyl-N'-2-(methoxycarbonyl)ethylaniline 
• 14346-19-1 3-amino-5-nitro-2,1-benzoisothiazole 

Relevant articles and documents

Structural and spectral characterizations of C.I. Disperse Blue 148 having a new crystalline form

Single-crystal structures of the best high-temperature trichromatic blue azo dye C.I. Disperse Blue 148 and its diazonium component 3-amino-5-nitro-[2,1] - benzisothiazole are described herein. C.I. Disperse Blue 148 exhibits an essentially coplanar molecular structure and a dimeric packing mode between adjacent phenyl and benzisothiazole rings. Particularly, PXRD measurement reveals the existence of a new crystalline form of C.I. Disperse Blue 148 having the highest melting point and the best thermal stability, which is obviously different from all the known α, β, and γ forms. A one-phase recrystallization method, which can guarantee the complete transformation, is used to prepare the new crystalline form instead of the conventional heating of an aqueous suspension of α form. Furthermore, TGA-DSC and pH titration experiments have been carried out to reveal the thermal and pH stabilities of this heterocyclic dye. To our knowledge, this is the first structural example on benzisothiazole involved azo dyes.