82-47-3

Basic information

• Product Name: 4-amino-5-hydroxynaphthalene-1,3-disulphonic acid
• Synonyms: 4-amino-5-hydroxynaphthalene-1,3-disulphonic acid;4-amino-5-hydroxynaphthalene-1,3-disulfonic acid;4-Amino-5-Hydorxy-1,3-Naphthalenedisulfonic Acid;1-Amino-8-naphthol-2,4-disulfonic acid;4-Amino-5-hydroxy-1,3-naphthalenedisulfonic acid;8-Amino-1-hydroxy-5,7-disulfonaphthalene;8-Amino-5,7-disulfo-1-naphthol;1-Amino-8-hydroxynaphthalene-2,4-disulfonic acid
• CAS NO: 82-47-3
• Molecular Formula: C₁₀H₉NO₇S₂
• Molecular Weight: 319.31096
• EINECS: 201-425-6
• Product Categories: Intermediates of Dyes and Pigments
• Mol File: 82-47-3.mol
• Article Data: 4

Chemical Properties

• Appearance: /
• Density: 1.88 g/cm³
• Refractive Index: 1.764
• CAS DataBase Reference: 4-amino-5-hydroxynaphthalene-1,3-disulphonic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 4-amino-5-hydroxynaphthalene-1,3-disulphonic acid(82-47-3)
• EPA Substance Registry System: 4-amino-5-hydroxynaphthalene-1,3-disulphonic acid(82-47-3)

Safety Data

• Hazardous Substances Data: 82-47-3(Hazardous Substances Data)

Usage

Description

4-amino-5-hydroxynaphthalene-1,3-disulphonic acid, commonly known as H-acid, is an organic compound that is part of the naphthylamines and derivatives family. It is characterized by the presence of hydroxyl, sulfonyl, and amino functional groups attached to a naphthalene base, with the chemical formula C10H9NO7S2S. H-acid is renowned for its ability to produce a wide range of colors, making it a key component in the dye manufacturing industry. However, it is crucial to handle and dispose of this substance with care due to its high toxicity, which can pose environmental risks if not managed properly.

Uses

Used in Dye Manufacturing Industry:
4-amino-5-hydroxynaphthalene-1,3-disulphonic acid is used as a key component in the production of dyes for its ability to generate a broad spectrum of colors. This makes it an essential ingredient in creating various types of dyes that cater to different industries and applications.
Used in Textile Industry:
In the textile industry, 4-amino-5-hydroxynaphthalene-1,3-disulphonic acid is used as a dyeing agent to impart color to fabrics. Its capacity to produce a wide range of hues allows for the creation of diverse and vibrant textile products, enhancing the visual appeal and variety of textiles available in the market.
Used in Plastics and Polymer Industry:
4-amino-5-hydroxynaphthalene-1,3-disulphonic acid is used as a colorant in the plastics and polymer industry to provide color to various plastic products. Its versatility in color production enables the creation of plastics with different shades and tones, catering to the aesthetic and functional requirements of various applications.
Used in Paint and Coating Industry:
In the paint and coating industry, 4-amino-5-hydroxynaphthalene-1,3-disulphonic acid is used as a pigment to provide color to paints and coatings. Its ability to produce a broad spectrum of colors allows for the formulation of paints and coatings with a wide range of hues, meeting the diverse color preferences and requirements of consumers and industries alike.
Environmental Considerations:
Due to the high toxicity of 4-amino-5-hydroxynaphthalene-1,3-disulphonic acid, it is crucial to handle and dispose of this substance with care. Proper management and disposal practices are essential to minimize the environmental risks associated with its use, ensuring the safety of both the environment and the people who come into contact with it.

InChI:InChI=1/C10H9NO7S2/c11-10-8(20(16,17)18)4-7(19(13,14)15)5-2-1-3-6(12)9(5)10/h1-4,12H,11H2,(H,13,14,15)(H,16,17,18)

Upstream product

• 7732-18-5 water 
• 82-65-5 1,1-dioxo-2H-1λ⁶-naphth[1,8-cd]isothiazole-3,5-disulfonic acid 

Downstream Products

• 3841-14-3 4,4'-diamino-5,5'-dihydroxy-6,6'-(3,3'-dimethoxy-biphenyl-4,4'-diyl-bis-azo)-bis-naphthalene-1,3-disulfonic acid 
• 90916-40-8 4,6-diamino-5-hydroxy-naphthalene-1,3-disulfonic acid 

Relevant articles and documents

Copper complexes of sulpho groups containing disazo dyestuffs

The new disazo dyestuffs of the formula (I) STR1 in which the substituents and indices have the meaning given in the description, and salts thereof are outstandingly suitable for dyeing cellulose-containing materials and leather in blue shades having good wet- and light-fastnesses.

Triazinyl reactive dyes containing additional fiber reactive groups bound through the sulfonylalkylaminoalkylamino bridge

The invention relates to novel useful reactive dyes of the formula I STR1 in which: F is a radical selected from the group consisting of metal-free or metal-containing monoazo or disazo dyes containing at least one --SO3 H group, anthraquinone dyes, sulfophthalocyanine dyes, formazan dyes, phenazine dyes, oxanine dyes and nitroaryl dyes, R is hydrogen, C1 -C4 alkyl which is unsubstituted or substituted with --COOH or --SO3 H, cyanoethyl, or hydroxyethyl, X is fluorine, chlorine, bromine, --SO3 H, phenylsulfonyl or C1 -C4 -alkylsulfonyl, P is 1 or 2 and A is a radical of the formula STR2 in which: the groups designated "alk" are independently of each other straight or branched polymethylene radicals having 2 to 6 carbon atoms, and Z is β-halogenoethyl, vinyl, β-sulfatoethyl, β-thiosulfatoethyl or βacetoxyethyl.