1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid

ChemicalBook > CAS DataBase List > 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid

Product Name: 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid
CAS No.: 90-20-0
Chemical Name: 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid
Synonyms: H Acids;c.i.35570;kyselinah;1-Naphthol-8-amino-3,6-disulfonicacid;1-Amino-8-naphthol-3,6-disulphonicacid;8-AMINO-1-NAPHTHOL-3,6-DISULFONIC ACID;1-AMINO-8-NAPHTHOL-3,6-DISULFONIC ACID;kyselina8-amino-1-naftol-3,6-disulfonova;kyselina1-amino-8-naftol-3,6-disulfonova;1-Amino-8-hydroxy-3,6-disulfonaphthalene
CBNumber: CB7306275
Molecular Formula: C10H9NO7S2
Formula Weight: 319.31
MOL File: 90-20-0.mol

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1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid Property

Melting point:: >300 °C(lit.)
Density: 1.6832 (rough estimate)
refractive index: 1.7640 (estimate)
solubility: DMSO (Slightly, Heated), Methanol (Slightly), Water (Slightly)
form: Solid
pka: -0.95±0.40(Predicted)
color: Light Beige to Beige
CAS DataBase Reference: 90-20-0(CAS DataBase Reference)
EPA Substance Registry System: 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy- (90-20-0)

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Safety

Hazard Codes: Xi
Risk Statements: 36/37/38
Safety Statements: 26-36
WGK Germany: 3
HS Code: 2922210060

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

Matrix Scientific

Product number: 074462
Product name: 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Purity: 95+%
Packaging: 5g
Price: $25
Updated: 2021/12/16

AK Scientific

Product number: K640
Product name: 4-Amino-5-hydroxy-2,7-naphthalenedisulfonicacid
Packaging: 25g
Price: $38
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FA40913
Product name: 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Packaging: 10g
Price: $65
Updated: 2021/12/16

Matrix Scientific

Product number: 074462
Product name: 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Purity: 95+%
Packaging: 25g
Price: $75
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FA40913
Product name: 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Packaging: 25g
Price: $120
Updated: 2021/12/16

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1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid Chemical Properties,Usage,Production

Chemical Properties

1-Amino-8-hydroxynaphthalene-3,6-disulfonic acid [90-20-0]. (4-amino-5-hydroxynaphthalene-2,7-disulfonic acid), H acid, C10H9NO7S2, Mr 319.3, is usually isolated as its monosodium salt [5460-09-3], a gray powder that is slightly soluble in cold water and readily soluble in hot water; the disodium salt is very soluble in water. With diazo compounds, H acid couples ortho to the amino group under acid conditions and ortho to the hydroxyl group under alkaline conditions. Bisazo derivatives are formed by stepwise acid and alkaline coupling, with the much slower acid coupling being performed first.

Uses

4-Amino-5-hydroxy-2,7-naphthalenedisulfonic Acid is useful for preparing reactive dyes.

Purification Methods

A slightly alkaline solution of Na2CO3 (ca 22g) in water (litmus) is added to a solution of 100g of the dry acid in 750mL of hot distilled water, followed by 5g of activated charcoal and 5g of Celite. The suspension is stirred for 10minutes and filtered by suction. The acid is then precipitated by adding ca 40mL of conc HCl (solution is blue to Congo Red), then filter it by suction through a shark skin filter circular sheet (or hardened filter paper) and wash it with 100mL of distilled water. The purification process is repeated. The acid is dried overnight in an oven at 60o and stored in a dark bottle The diethylamine salt has m 306-307o(dec, from aqueous EtOH). [Post & Moore Anal Chem 31 1872 1959]. [Beilstein 14 H 840, 14 I 758, 14 II 502, 14 III 2292, 14 IV 2824.]

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid Preparation Products And Raw materials

Raw materials

Preparation Products

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View Lastest Price from 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid manufacturers

Changzhou waston chemical technology Co.,Ltd

Product: 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid 90-20-0
Price: US $0.00/kg
Min. Order: 1kg
Purity: 98%
Supply Ability: according to customer's requirements
Release date: 2023-10-09

Career Henan Chemical Co

Product: 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid 90-20-0
Price: US $1.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 10000KGS
Release date: 2020-01-02

GIHI CHEMICALS CO.,LIMITED

Product: 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid 90-20-0
Price: US $2.00/g
Min. Order: 1g
Purity: 98%
Supply Ability: 2tons
Release date: 2019-04-16

90-20-0, 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acidRelated Search:

Sulfanilic acid 4-Amino-benzenesulfonic acid monosodium salt Sulfamic acid monosodium salt Ammonium sulfamate Sulfamic acid Glycine Nickel bis(sulphamidate) Molasses AZOMETHINE H 8-Amino-1-naphthol-3,6-disulfonic acid monosodium salt monohydrate 8-AMINO-1-NAPHTHOL-3,6-DISULFONIC ACID MONOSODIUM SALT N-HYDRATE 2-amino-5-hydroxynaphthalene-1,7-disulphonic acid PALATINE CHROME GREEN 4-acetamido-5-hydroxynaphthalene-2,7-disulfonic acid 1-AMINO-8-NAPHTHOL-2,4-DISULFONIC ACID MONOSODIUM SALT N,N-methylenebis N'-1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl urea 2-Amino-8-naphthol-3,6-disulfonic acid 1-Naphthol-3,6-disulfonic acid

4-amino-5-hydroxy-7-naphthalenedisulfonicacid

7-Naphthalenedisulfonicacid,4-amino-5-hydroxy-2

c.i.35570

1-Naphthol-8-amino-3,6-disulfonicacid

kyselina1-amino-8-naftol-3,6-disulfonova

1-AMINO-8-NAPHTHOL-3,6-DISULFONIC ACID

4-AMINO-5-HYDROXY-2,7-NAPTHALENEDISULFONIC ACID

4-AMINO-5-HYDROXY-2,7-NAPHTHALENEDISULFONIC ACID

8-AMINO-1-NAPHTHOL-3,6-DISULFONIC ACID

1-Amino-8-naphthol-3,6-disulphonicacid

kyselina8-amino-1-naftol-3,6-disulfonova

kyselinah

4-amino-5-hydroxynaphthalene-2,7-disulphonic acid

4-amino-5-hydroxy-2,7-naphalene disulfonic acid

1-Amino-8-hydroxy-3,6-disulfonaphthalene

1-Amino-8-hydroxynaphthalene-3,6-disulfonic acid

1-AMINO-8-HYDROXYNAPHTHALENE-3,6-DISULPHONIC ACID

2,7-NAPHTHALENEDISULFONICACID,4-AMINO-5-HYDROXY

8-Amino-1-hydroxy-3,6-naphthalenedisulfonic acid

4-azanyl-5-hydroxy-naphthalene-2,7-disulfonic acid

H Acids

4-Amino-5-hydroxy-2,7-naphthalenedisulfonic

H ACID (1-AMINO-8-NAPHTHOL -3 6-DISULFONIC ACID)

1-Amino-8-hydroxynaphthalene-3,6-disulphonicaci

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid ISO 9001：2015 REACH

TIANFU-CHEM 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid 90-20-0

H Acid:8-Amino-1-Naphthol-3,6-Disulfonic Acid Monosodium Salt Monohydrate

90-20-0

1300-51-1

C10H9NO7S2

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