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37279-54-2

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  • Cuprate(2-), [m-[[7,7'-iminobis[4-(hydroxy-kO)-3-[2-[2-(hydroxy-kO)-5-[(methylamino)sulfonyl]phenyl]diazenyl-kN1]-2-naphthalenesulfonato]](6-)]]di-,sodium (1:2)

    Cas No: 37279-54-2

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  • Cuprate(2-), [m-[[7,7'-iminobis[4-(hydroxy-kO)-3-[2-[2-(hydroxy-kO)-5-[(methylamino)sulfonyl]phenyl]diazenyl-kN1]-2-naphthalenesulfonato]](6-)]]di-,sodium (1:2)

    Cas No: 37279-54-2

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37279-54-2 Usage

Preparation

3-Amino-4-hydroxy-N-methylbenzenesulfonamide (2 Moore) diazo, and Bis(4-hydroxy-2-sulfonaphthalene-7-yl)amine coupling, and then use the ammonia containing copper sulfate solution processing, make it a double copper complex.

Properties and Applications

blue purple. Dark purple powder. Soluble in water solution for purple, soluble in ethanol for red light purple, insoluble in other organic solvents. The strong sulfuric acid dyes for black light purple, diluted into red wine. The dye solution to join strong hydrochloric acid into Claret, precipitation; Add thick sodium hydroxide solution still for purple, have precipitation. Water-soluble general, acid, alkali and sensitive fights. In dyeing copper and iron ion colored light basic unchanged. Used for cotton, viscose, silk dyeing and printing, also can be used for leather and paper shading, its heavy metal salt can be used as organic pigments. Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water Fading Stain Fading Stain ISO 3-4 4 6 3 2-3 AATCC 4-5 5 5 1 3

Standard

Acid Resistance

Fading

Stain

ISO

3-4

AATCC

4-5

Check Digit Verification of cas no

The CAS Registry Mumber 37279-54-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,7,2,7 and 9 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 37279-54:
(7*3)+(6*7)+(5*2)+(4*7)+(3*9)+(2*5)+(1*4)=142
142 % 10 = 2
So 37279-54-2 is a valid CAS Registry Number.

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