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Disodium 5-amino-4-hydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]naphthalene-2,7-disulphonate is a complex organic compound with a deep green color. It is soluble in water, turning purple when dissolved, and insoluble in ethanol. disodium 5-amino-4-hydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]naphthalene-2,7-disulphonate exhibits color changes in the presence of various chemicals, such as turning red in concentrated sulfuric acid, purple upon dilution, and blue light red upon precipitation. When added to a dye aqueous solution and mixed with concentrated hydrochloric acid, it turns magenta. It also exhibits a purple color when in contact with strong caustic substances.

3769-61-7

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  • 2,7-Naphthalenedisulfonicacid, 5-amino-4-hydroxy-3-[2-(2-hydroxy-3,5-dinitrophenyl)diazenyl]-, sodiumsalt (1:2)

    Cas No: 3769-61-7

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3769-61-7 Usage

Uses

Used in Textile Industry:
Disodium 5-amino-4-hydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]naphthalene-2,7-disulphonate is used as a dye for textiles due to its color-changing properties and solubility in water. It provides various shades depending on the chemicals it interacts with, making it a versatile option for coloring fabrics.
Used in Analytical Chemistry:
disodium 5-amino-4-hydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]naphthalene-2,7-disulphonate can be used as an analytical reagent in the detection and quantification of certain substances, such as heavy metals, due to its color-changing properties in the presence of specific chemicals.
Used in Research and Development:
Disodium 5-amino-4-hydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]naphthalene-2,7-disulphonate can be utilized in research and development for the synthesis of new compounds and the study of chemical reactions involving azo dyes and their interactions with various chemicals.
Standard:
disodium 5-amino-4-hydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]naphthalene-2,7-disulphonate adheres to various standards, including ISO, for its performance in different conditions such as ironing fastness (ISO 5), light fastness (ISO 2-3), fulling (ISO 4), perspiration fastness (ISO 5), soaping (ISO 5), and resistance to water, alkali, and acid (both ISO 5). These standards ensure the compound's reliability and effectiveness in various applications.

Preparation

2-Amino-4,6-dinitrophenol diazotization, in alkaline condition and?4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid coupling

Standard

Ironing Fastness

Alkali

Acid

ISO

5

Check Digit Verification of cas no

The CAS Registry Mumber 3769-61-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,7,6 and 9 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 3769-61:
(6*3)+(5*7)+(4*6)+(3*9)+(2*6)+(1*1)=117
117 % 10 = 7
So 3769-61-7 is a valid CAS Registry Number.
InChI:InChI=1/C16H11N5O12S2.2Na/c17-9-5-8(34(28,29)30)1-6-2-12(35(31,32)33)14(16(23)13(6)9)19-18-10-3-7(20(24)25)4-11(15(10)22)21(26)27;;/h1-5,18,22H,17H2,(H,28,29,30)(H,31,32,33);;/q;2*+1/p-2/b19-14-;;

3769-61-7SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name disodium 5-amino-4-hydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]naphthalene-2,7-disulfonate

1.2 Other means of identification

Product number -
Other names Disodium 5-amino-4-hydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]naphthalene-2,7-disulfonate

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:3769-61-7 SDS

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