4-aminonaphthalene-1,7-disulfonic acid
- CAS No.
- 85-74-5
- Chemical Name:
- 4-aminonaphthalene-1,7-disulfonic acid
- Synonyms
- DAHLSACIDII;1-naphthylamine-4,6-disulfonic acid;4-aminonaphthalene-1,7-disulfonic acid;4-amino-1,7-naphthalenedisulfonic acid;4-azanylnaphthalene-1,7-disulfonic acid;4-aminonaphthalene-1,7-disulphonic acid;1,7-Naphthalenedisulfonic acid, 4-amino-
- CBNumber:
- CB8875756
- Molecular Formula:
- C10H9NO6S2
- Molecular Weight:
- 303.31
- MOL File:
- 85-74-5.mol
- Modify Date:
- 2023/11/3 13:55:31
| Boiling point | 205.8°C (rough estimate) |
|---|---|
| Density | 1.6329 (rough estimate) |
| refractive index | 1.7330 (estimate) |
| pka | -0.84±0.40(Predicted) |
| EPA Substance Registry System | 1,7-Naphthalenedisulfonic acid, 4-amino- (85-74-5) |
4-aminonaphthalene-1,7-disulfonic acid Chemical Properties,Uses,Production
Description
1-Aminonaphthalene-4,6-disulfonic acid [85-74-5]. (4-aminonaphthalene-1,7-disulfonic acid), Dahl’s acid II, C10H9NO6S2, Mr 303.3, and its alkali-metal salts are soluble in water; the calcium salt is soluble in aqueous ethanol. Caustic fusion at 180℃ yields 1-amino-6-hydroxynaphthalene-4-sulfonic acid, but at higher temperature 4,7-dihydroxynaphthalene1-sulfonic acid is formed. Sulfonation with 35 % oleum at 80℃ gives 1-aminonaphthalene-2,4,6-trisulfonic acid.
Preparation
Naphthionic acid is sulfonated with 25 % oleum at 20℃ to give a 70 : 30 mixture of 1,4,7- and 1,4,6-trisulfonic acids, which is used as mixed Dahl’s acids.
4-aminonaphthalene-1,7-disulfonic acid Preparation Products And Raw materials
Raw materials
Preparation Products
Global( 4)Suppliers
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| Mangalam Intermediates | +91-8758025080 +91-9824145269 | Gujarat, India | 41 | 58 | Inquiry |
| Dynasty Colourants Co., Ltd. | 86 0574 27862107 27862719 | China | 3306 | 51 | Inquiry |
| Riedel-de Haen AG | 800 558-9160 | United States | 6825 | 87 | Inquiry |
| Supplier | Advantage |
|---|---|
| Mangalam Intermediates | 58 |
| Dynasty Colourants Co., Ltd. | 51 |
| Riedel-de Haen AG | 87 |
4-aminonaphthalene-1,7-disulphonic acid
DAHLSACIDII
4-amino-1,7-naphthalenedisulfonic acid
4-azanylnaphthalene-1,7-disulfonic acid
1-naphthylamine-4,6-disulfonic acid
4-aminonaphthalene-1,7-disulfonic acid
1,7-Naphthalenedisulfonic acid, 4-amino-
85-74-5