2-Amino-4,8-naphthalenedisulfonic acid

Product Name: 2-Amino-4,8-naphthalenedisulfonic acid
CAS No.: 131-27-1
Chemical Name: 2-Amino-4,8-naphthalenedisulfonic acid
Synonyms: acidiv;C ACID;kyselinac;AMINO C ACID;CASSELLA ACID;JACS-131-27-1;2-Amino-4,8-naphthal;4,8-disulfo-2-naphthalamine;4,8-Disulfo-2-naphthylamine;2-Ethylamino-4,8-dinaphthalene
CBNumber: CB5200922
Molecular Formula: C10H9NO6S2
Formula Weight: 303.31
MOL File: 131-27-1.mol

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2-Amino-4,8-naphthalenedisulfonic acid Property

Boiling point:: 205.8°C (rough estimate)
Density: 1.6329 (rough estimate)
refractive index: 1.7330 (estimate)
storage temp.: 2-8°C
pka: -1.16±0.40(Predicted)
CAS DataBase Reference: 131-27-1(CAS DataBase Reference)
EPA Substance Registry System: 1,5-Naphthalenedisulfonic acid, 3-amino- (131-27-1)

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Safety

Risk Statements: 36/37/38
Safety Statements: 26-36/37/39
Toxicity: rat,LD50,oral,11400mg/kg (11400mg/kg),"Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1058, 1986.

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

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

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P330Rinse mouth.

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P337+P313IF eye irritation persists: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

P403+P233Store in a well-ventilated place. Keep container tightly closed.

P405Store locked up.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Biosynth Carbosynth

Product number: FA40997
Product name: 2-Amino-4,8-naphthalenedisulfonic acid
Packaging: 100g
Price: $60
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FA40997
Product name: 2-Amino-4,8-naphthalenedisulfonic acid
Packaging: 250g
Price: $100
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FA40997
Product name: 2-Amino-4,8-naphthalenedisulfonic acid
Packaging: 500g
Price: $180
Updated: 2021/12/16

Matrix Scientific

Product number: 094178
Product name: 3-Aminonaphthalene-1,5-disulfonic acid
Purity: 92+%
Packaging: 1g
Price: $189
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FA40997
Product name: 2-Amino-4,8-naphthalenedisulfonic acid
Packaging: 1kg
Price: $240
Updated: 2021/12/16

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2-Amino-4,8-naphthalenedisulfonic acid Chemical Properties,Usage,Production

Chemical Properties

2-Aminonaphthalene-4,8-disulfonic acid [131-27-1]. (3-aminonaphthalene-1,5-disulfonic acid), Cassella acid, C acid, C10H9NO6S2, Mr 303.32, and its salts are readily soluble in water. Reduction with sodium amalgam desulfonates 2-Aminonaphthalene-4,8-disulfonic acid to give 2-aminonaphthalene-8-sulfonic acid, whereas boiling with dilute sulfuric acid results in desulfonation and hydrolysis to give 2- hydroxynaphthalene-4-sulfonic acid. Alkali fusion (KOH, 215℃) produces 2-amino-4-hydroxynaphthalene-8-sulfonic acid.

Uses

2-Amino-4,8-naphthalenedisulfonic Acid is used in green preparation method of direct blended blue D 3GL.

Uses

Cassella acid is an important diazo component for yellow direct and reactive dyes.

Production Methods

The iron(II) salt of 3-nitronaphthalene-1,5-disulfonic acid (nitro-Armstrong acid) is reduced with iron in dilute acid. A claimed improvement involves isolation of nitro-Armstrong acid from the nitration products of naphthalene-1,5-disulfonic acid as the crystalline magnesium salt prior to catalytic reduction to C acid.

2-Amino-4,8-naphthalenedisulfonic acid Preparation Products And Raw materials

Raw materials

FUMING SULFURIC ACID Naphthalene Magnesium carbonate Nitric acid

Preparation Products

Pigment Red 53:1 Direct Black 103 Direct Blend Blue Reactive Yellow KE-4RN PROCION BLUE H-5R Direct Yellow 86 2-NAPHTHYLAMINE-4,6,8-TRISULFONIC ACID Direct Blue 71 Reactive Yellow 3 Reactive Blue 222 Reactive Yeiiow M-3RE Direct Blending Yellow D-3RNL

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2-Amino-4,8-naphthalenedisulfonic acid Suppliers

China 139 Europe 2 India 7 Singapore 1 The Netherlands 1 United Kingdom 4 United States 18 Global 172

Alchem Pharmtech,Inc.

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View Lastest Price from 2-Amino-4,8-naphthalenedisulfonic acid manufacturers

Henan Bao Enluo International TradeCo.，LTD

Product: 2-Amino-4,8-naphthalenedisulfonic acid 131-27-1
Price: US $30.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 1000tons
Release date: 2023-08-04

Career Henan Chemical Co

Product: 2-Amino-4,8-naphthalenedisulfonic acid 131-27-1
Price: US $1.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: Customized
Release date: 2018-12-22

131-27-1, 2-Amino-4,8-naphthalenedisulfonic acidRelated Search:

Stearic acid Sodium diphenylamine-4-sulfonate 6-Aminopenicillanic acid 6-Aminocaproic acid PHENOLDISULFONIC ACID 2-AMINODIETHYLMALONATE Sodium xylenesulfonate 1-Naphthylamine Folic acid Citric acid Indigo Carmine Ethyl 2-(Chlorosulfonyl)acetate Methyl 3-aminocrotonate Dihydroergotoxine mesylate Glycine DL-ALPHA-AMINOPIMELIC ACID L-ASPARTIC ACID Ascoric Acid

2-Ethylamino-4,8-dinaphthalene

5-Naphthalenedisulfonicacid,3-amino-1

acidiv

beta-naphthylamine-4,8-disulfonicacid

beta-naphthylaminedisulfonicacid

kyselina2-naftylamin-4,8-disulfonova

kyselinac

2-Ethylamino-4,8-dinaphthalenedisulfonicacid

3-amino-1,5-naphthalenedisulfonic

3-amino-5-naphthalenedisulfonicacid

3-aminonaphthalene-1,5-disulphonicacid

4,8-disulfo-2-naphthalamine

CASSELLA ACID

C ACID

2-NAPHTHYLAMINE-4,8-DISULFONIC ACID

2 NAPHTHYLAMINE 4,8 DISULPHONIC ACID

AMINO C ACID

3-AMINO-1,5-NAPHTHALENEDISULFONIC ACID

3-aminonaphthalene-1,5-disulfonic acid

2-Naphthylamine-4,8-Disulphonic Acid (C-Acid)

2-Naphthylamine-4,8-Disulfonic Acid Amino C Acid (or Cassella Acid)

1-AMINONAPHTHALENE-4,8-DISULPHONICACID

3-AMINO-1,5-NAPHTHALENEDISULFONIC ACID 50%

2-Amino-4,8-naphthalenedisulfonic acid

4,8-Disulfo-2-naphthylamine

7-Amino-1,5-naphthalenedisulfonic acid

2-Aminonaphthalene-4,8-disulfonic acid

3-azanylnaphthalene-1,5-disulfonic acid

2-Amino-4,8-naphthal

JACS-131-27-1

1,5-Naphthalenedisulfonic acid, 3-amino-

3-aminonaphthalene-1,5-disulfonicaci

2-Amino-4,8-naphthalenedisulfonic acid ISO 9001：2015 REACH

3-Aminonaphthalin-1,5-disulfonsure

TIANFU-CHEM -2-Amino-4,8-naphthalenedisulfonic acid

131-27-1

H2NC10H5SO3H2

Intermediates of Dyes and Pigments