ChemicalBook > Product Catalog >Organic Chemistry >Carboxylic acids and derivatives >Carboxylic acid derivatives >2-Amino-4,8-naphthalenedisulfonic acid
2-Amino-4,8-naphthalenedisulfonic acid
- CAS No.
- 131-27-1
- Chemical Name:
- 2-Amino-4,8-naphthalenedisulfonic acid
- Synonyms
- C ACID;acidiv;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
- Molecular Weight:
- 303.31
- MOL File:
- 131-27-1.mol
- MSDS File:
- SDS
- Modify Date:
- 2023/11/6 11:25:17
| 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) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H302-H315-H319-H335 |
| Precautionary statements | P261-P264-P270-P271-P280-P301+P312-P302+P352-P304+P340-P305+P351+P338-P330-P332+P313-P337+P313-P362-P403+P233-P405-P501 |
| 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. |
2-Amino-4,8-naphthalenedisulfonic acid Chemical Properties,Uses,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
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
Preparation Products
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
Durazol Brown 4RNS
Direct black 75 (C.I. 35870)
1,5-Naphthalenedisulfonic acid, 3-[[4-[[4-[(4-amino-2,5-dimethylphenyl)azo]-6(or 7)-sulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]-, trisodium salt
1,5-Naphthalenedisulfonicacid,3-[[4-[[4-[(4-amino-5-methoxy-2-methylphenyl)azo]-6(or7)-sulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]-,trisodiumsalt
tetrasodium 3,3'-[carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]bis(naphthalene-1,5-disulphonate)
Direct Yellow 86
Direct Black 103
DIRECT YELLOW 50
chevron_left
1of4
chevron_right
Global( 163)Suppliers
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| Harsh Organo Chem Pvt Ltd | +91-7925841409 +91-7926441930 | Gujarat, India | 7 | 58 | Inquiry |
| Shubhlaxmi Industries | +91-9825244644 +91-9979874747 | Gujarat, India | 9 | 58 | Inquiry |
| PARAGON FINE AND SPECIALITY CHEMICAL PVT LTD | +91 9909190838 | Ahmedabad, India | 66 | 58 | Inquiry |
| Parshwanath Group of Indusries | +91-9979874744 +91-9825244644 | Gujarat, India | 211 | 58 | Inquiry |
| OCEAN TRADING CORPORATION | +91(22) 24921669 | New Delhi, India | 6211 | 58 | Inquiry |
| Rushvi Finechem Pvt Ltd | 08046073266 | Ahmedabad, India | 53 | 58 | Inquiry |
| Shubhlaxmi Industries | 91-79-40084607 | Gujarat, India | 11 | 58 | Inquiry |
| Henan Bao Enluo International TradeCo.，LTD | +86-17331933971 +86-17331933971 | China | 2503 | 58 | Inquiry |
| Shanghai Daken Advanced Materials Co.,Ltd | +86-371-66670886 | China | 16209 | 58 | Inquiry |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | China | 21675 | 55 | Inquiry |
131-27-1(2-Amino-4,8-naphthalenedisulfonic acid)Related Search:
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
2-Ethylamino-4,8-dinaphthalene
5-Naphthalenedisulfonicacid,3-amino-1
acidiv
beta-naphthylamine-4,8-disulfonicacid
beta-naphthylaminedisulfonicacid
kyselina2-naftylamin-4,8-disulfonova
kyselinac
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