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6428-31-5

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  • 2,7-Naphthalenedisulfonicacid,4-amino-3,6-bis[2-[4-[2-(2,4-diaminophenyl)diazenyl]phenyl]diazenyl]-5-hydroxy-,sodium salt (1:2)

    Cas No: 6428-31-5

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  • 1 Gram

  • 10000 Metric Ton/Month

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6428-31-5 Usage

Preparation

4-Nitrobenzenamine (2 Moore) diazo, one in acid conditions, a in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid (1 Moore) coupling, and then will the nitro reduction, diazotization, again with Benzene-1,3-diamine (2 Moore) coupled.

Flammability and Explosibility

Nonflammable

Properties and Applications

green and black. Black powder. Soluble in water for green light black, solubility of 100 g/L (80 ℃), slightly soluble in ethanol and acetone. The strong sulfuric acid in the green light for black, dilute red after black precipitation; In nitric acid to dark brown. Dyes and microstructure of sulfuric acid solution 10% red; Add thick sodium hydroxide solution for green light blue. Copper ions in dyeing color shade the green, iron ion a slight change in color. Used in viscose of dyeing and printing. In the cotton knitwear, blankets, flannelette, silk, viscose, silk that the fabric, wool/viscose fiber blend fabrics can be used. Can also be used in leather, paper and electrochemical aluminum color. Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water Fading Stain Fading Stain ISO 4 3 3-4 2 2 AATCC 4-5 3 3 2-3 2

Standard

Acid Resistance

Fading

Stain

ISO

4

AATCC

4-5

Check Digit Verification of cas no

The CAS Registry Mumber 6428-31-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,2 and 8 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 6428-31:
(6*6)+(5*4)+(4*2)+(3*8)+(2*3)+(1*1)=95
95 % 10 = 5
So 6428-31-5 is a valid CAS Registry Number.
InChI:InChI=1/C34H29N13O7S2.2Na/c35-18-1-11-26(24(37)15-18)44-40-20-3-7-22(8-4-20)42-46-32-28(55(49,50)51)13-17-14-29(56(52,53)54)33(34(48)30(17)31(32)39)47-43-23-9-5-21(6-10-23)41-45-27-12-2-19(36)16-25(27)38;;/h1-16,48H,35-39H2,(H,49,50,51)(H,52,53,54);;/q;2*+1/p-2/b44-40+,45-41+,46-42+,47-43+;;

6428-31-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 20, 2017

Revision Date: Aug 20, 2017

1.Identification

1.1 GHS Product identifier

Product name Direct Black 19

1.2 Other means of identification

Product number -
Other names Vicorect Black FB.

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:6428-31-5 SDS

6428-31-5Upstream product

6428-31-5Downstream Products

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