6-Amino-1-naphthalenesulfonic acid
- CAS No.
- 81-05-0
- Chemical Name:
- 6-Amino-1-naphthalenesulfonic acid
- Synonyms
- D ACID;DAHL'S ACID;2-Naphthylamine-5-sulfonicaci;2-NAPHTHYLAMINE-5-SULFONIC ACID;6-Aminonaphthalene-1-sulfonicaci;2-AMINO-5-NAPHTHALENESULFONIC ACID;2-AMINONAPHTHALENE-5-SULFONIC ACID;BETA-NAPHTHYLAMINE-5-SULFONIC ACID;6-aminonaphthalene-1-sulfonic acid;6-AMINO-1-NAPHTHALENESULFONIC ACID
- CBNumber:
- CB3782572
- Molecular Formula:
- C10H9NO3S
- Molecular Weight:
- 223.25
- MOL File:
- 81-05-0.mol
- Modify Date:
- 2024/5/31 17:33:32
| Density | 1.3588 (rough estimate) |
|---|---|
| refractive index | 1.6500 (estimate) |
| storage temp. | under inert gas (nitrogen or Argon) at 2–8 °C |
| form | powder to crystal |
| pka | -0.33±0.40(Predicted) |
| color | White to Light yellow to Light red |
| Water Solubility | 0.33g/L(20 ºC) |
| Merck | 14,6407 |
| CAS DataBase Reference | 81-05-0(CAS DataBase Reference) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319 | |||||||||
| Precautionary statements | P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313 | |||||||||
| RIDADR | 1759 | |||||||||
| HazardClass | 8 | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 29269095 | |||||||||
| NFPA 704 |
|
6-Amino-1-naphthalenesulfonic acid price More Price(2)
6-Amino-1-naphthalenesulfonic acid Chemical Properties,Uses,Production
Chemical Properties
2-Aminonaphthalene-5-sulfonic acid [81-05-0]. (6-aminonaphthalene-1-sulfonic acid), Dahl’s acid, Dressel acid, D acid, C10H9NO3S, Mr 223.24, crystallizes from water as needles although only 0.4 % soluble at 100℃. The sodium, calcium, and barium salts are moderately soluble in water. Bromination in acetic acid gives the 1-bromo derivative. Sulfonation with oleum gives a mixture of 2-aminonaphthalene-5,7-disulfonic acid together with some 1,5-disulfonic acid. Fusion with potassium hydroxide at 260℃ yields 6-amino-1-naphthol.
Production Methods
Tobias acid is added to a mixture of sulfuric acid and oleum, and the reaction is completed by stirring for 12 h at 25℃. The resulting sulfonation mass, containing mainly 2-aminonaphthalene-1,5-disulfonic acid, is poured into water and heated at 105℃ for 3 h to desulfonate and precipitate the product which, after cooling, is filtered off; the yield is 95 %.
6-Amino-1-naphthalenesulfonic acid Preparation Products And Raw materials
Raw materials
1of2
chevron_rightPreparation Products
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| R K Synthesis Limited | +91-9825095198 +91-9825095198 | Gujarat, India | 130 | 58 | Inquiry |
| Sajjan India Limited | 09867870497 | Mumbai, India | 78 | 58 | Inquiry |
| Kewin Chemicals Pvt., Ltd. | 91-9879563306 | Gujarat, India | 45 | 58 | Inquiry |
| Prashant Industries | +91 79 4008 3132 | Gujarat, India | 13 | 58 | Inquiry |
| U H International | +91 22 66203200 | Mumbai, India | 25 | 58 | Inquiry |
| Shri Raj Industries | 91-79-65052777 | Gujarat, India | 47 | 58 | Inquiry |
| R. K. Synthesis Limited | 91-79-49043500 | Gujarat, India | 31 | 58 | Inquiry |
| Kewin Chemtrade Private Limited | -994043.7253 | Ahmedabad, India | 40 | 58 | Inquiry |
| A.J Chemicals | 91-9810153283 | New Delhi, India | 6124 | 58 | Inquiry |
| TCI Chemicals (India) Pvt. Ltd. | 1800 425 7889 | New Delhi, India | 6778 | 58 | Inquiry |
| Supplier | Advantage |
|---|---|
| R K Synthesis Limited | 58 |
| Sajjan India Limited | 58 |
| Kewin Chemicals Pvt., Ltd. | 58 |
| Prashant Industries | 58 |
| U H International | 58 |
| Shri Raj Industries | 58 |
| R. K. Synthesis Limited | 58 |
| Kewin Chemtrade Private Limited | 58 |
| A.J Chemicals | 58 |
| TCI Chemicals (India) Pvt. Ltd. | 58 |