ChemicalBook > Product Catalog >Organic Chemistry >Amides >Sulfonic acids amino compound >1-AMINO-2-NAPHTHALENESULFONIC ACID
1-AMINO-2-NAPHTHALENESULFONIC ACID
- CAS No.
- 81-06-1
- Chemical Name:
- 1-AMINO-2-NAPHTHALENESULFONIC ACID
- Synonyms
- O-NAPHTHIONIC ACID;ONZWNZGVZFLMNZ-UHFFFAOYSA-N;1,2-Naphthylaminesulfonic acid;α-Naphthylamine-2-sulfonic acid;1-NAPHTHYLAMINE-2-SULFONIC ACID;1-amino-2-naphthalenesulfonicaci;1-aminonaphthalene-2-sulfonicaci;1-AMINO-2-NAPHTHALENESULFONIC ACID;1-aminonaphthalene-2-sulfonic acid;1-NAPHTHYLAMINE-2-SULFONIC ACID 98%
- CBNumber:
- CB8781833
- Molecular Formula:
- C10H9NO3S
- Molecular Weight:
- 223.25
- MOL File:
- 81-06-1.mol
- Modify Date:
- 2024/12/18 14:15:30
| Density | 1.3588 (rough estimate) |
|---|---|
| refractive index | 1.6500 (estimate) |
| pka | pK1: 1.71 (25°C) |
| Water Solubility | 4.1g/L(20 ºC) |
| EPA Substance Registry System | 2-Naphthalenesulfonic acid, 1-amino- (81-06-1) |
1-AMINO-2-NAPHTHALENESULFONIC ACID Chemical Properties,Uses,Production
Chemical Properties
1-Aminonaphthalene-2-sulfonic acid [81- 06-1]. ortho-naphthionic acid, C10H9NO3S, Mr 223.24, mp 262 – 265℃ (decomp.), is sparingly soluble in cold water but dissolves in hot water to give a 3 % solution. The sodium salt is more readily soluble in water (1.7 % at 20℃ and 10 % at 100℃). The calcium salt is similarly soluble, but the barium salt is almost insoluble.
Production Methods
1-Naphthylamine can be sulfonated by heating with sulfuric acid at 180 – 185℃, but the transient intermediate naphthalene-1-sulfamic acid is best prepared from 1-aminonaphthalene-4-sulfonic acid (naphthionic acid). When sodium naphthionate is heated in a solvent such as o-dichlorobenzene or xylene at 225℃, thermal rearrangement occurs to give the 1,2-isomer in high yield.
1-AMINO-2-NAPHTHALENESULFONIC ACID Preparation Products And Raw materials
Global( 22)Suppliers
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
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| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +8618949823763 | China | 34563 | 58 | Inquiry |
| Dideu Industries Group Limited | +86-29-89586680 +86-15129568250 | China | 22787 | 58 | Inquiry |
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| Daily Centre Limited | 852 27950571 | China | 335 | 34 | Inquiry |
| Baoji Didu Pharmaceutical and Chemical Co., Ltd | 02961856358 15829046862 | China | 10011 | 58 | Inquiry |
| ChemService Inc. | (800) 452-9994 Orders Only | United States | 6379 | 68 | Inquiry |
| MP Biomedicals, Inc. | 949 833 2500 | United States | 6561 | 81 | Inquiry |
| ASDI Incorporated | 888 577 ASDI | United States | 6922 | 67 | Inquiry |
| 3B Scientific Corporation | 847 281 9822 | United States | 6962 | 56 | Inquiry |
| Pfaltz & Bauer, Inc. | (800) 225-5172 | United States | 6828 | 72 | Inquiry |
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1-amino-2-naphthalenesulfonicaci
1,2-Naphthylaminesulfonic acid
α-Naphthylamine-2-sulfonic acid
1-azanylnaphthalene-2-sulfonic acid
O-NAPHTHIONIC ACID
1-AMINO-2-NAPHTHALENESULFONIC ACID
1-NAPHTHYLAMINE-2-SULFONIC ACID
1-aminonaphthalene-2-sulphonic acid
1-aminonaphthalene-2-sulfonic acid
1-NAPHTHYLAMINE-2-SULFONIC ACID 98%
ONZWNZGVZFLMNZ-UHFFFAOYSA-N
2-Naphthalenesulfonic acid, 1-amino-
1-aminonaphthalene-2-sulfonicaci
1-AMINO-2-NAPHTHALENESULFONIC ACID ISO 9001：2015 REACH
81-06-1
1981-06-1