???? ?
|
|
???? ? ??
- ???
- 180 °C
- ?? ?
- 220°C (rough estimate)
- ??
- 1.3588 (rough estimate)
- ???
- 1.5250 (estimate)
- ?? ??
- -20°C Freezer, Under inert atmosphere
- ???
- DMSO(??), ???(??, ??), ?(??, ??)
- ??? ??
- ??
- ??? ??
- ??? ??
- ?? ?? (pKa)
- pK1: 2.35 (25°C)
- ??
- ???? ?????
- ???
- 4.083g/L(20℃)
- Merck
- 14,6406
- BRN
- 613084
- InChI
- 1S/C10H9NO3S/c11-9-6-5-7-3-1-2-4-8(7)10(9)15(12,13)14/h1-6H,11H2,(H,12,13,14)
- InChIKey
- GWIAAIUASRVOIA-UHFFFAOYSA-N
- SMILES
- Nc1ccc2ccccc2c1S(O)(=O)=O
- CAS ??????
- 81-16-3(CAS DataBase Reference)
??
- ?? ? ?? ??
- ?? ? ???? ?? (GHS)
| ?? ???? ?? | 36/37/38-40 | ||
|---|---|---|---|
| ????? | 26-36/37/39 | ||
| ????(UN No.) | 2585 | ||
| WGK ?? | 1 | ||
| RTECS ?? | QK1250000 | ||
| TSCA | TSCA listed | ||
| HS ?? | 2921.45.9010 | ||
| ?? ?? | 8 | ||
| ???? | III | ||
| ???? ??? | 11 - Combustible Solids | ||
| ?? ?? ??? | 81-16-3(Hazardous Substances Data) | ||
| ???? ?? | KE-01497 |
???? ? C??? ??, ??, ??
??? ??
Grey white to light pink powder. 2-Aminonaphthalene-1-sulfonic acid [81-16-3]. Tobias acid, C10H9NO3S, Mr 223.24, is sparingly soluble in water but the sodium salt is readily soluble. Coupling with diazo compounds takes place in the 1-position with elimination of the sulfonic acid group.??
Azo dye intermediate, optical brighteners. Sulfonation with oleum gives 2-aminonaphthalene-1,5-disulfonic acid, which can be desulfonated to produce 2-aminonaphthalene-5- sulfonic acid. Tobias acid is used as a diazo component in acid dyes (e.g., C.I. Acid Yellow 19), red reactive dyes, and pigments such as the important Lithol Reds, [e.g., C.I. Pigment Red 49]. The free acid of C.I. Pigment Red 49 is also remarkably insoluble and can be used as a pigment.?? ??
2-Amino-1-naphthalenesulfonic acid is a manufacturing intermediate in the monosulfo monoazo color additive D&C Red No. 34 and its lakes.Purification Methods
Crystallise the acid under nitrogen from boiling water and dry it in a steam oven [Bryson Trans Faraday Soc 47 522, 527 1951]. [Beilstein 14 III 2240, 14 IV 2792.]???? ? ?? ?? ? ???
???
??? ?
2-Ethylnitrobenzene
??????
??
??????
Sodium sulfonate
2-???
??
????(??)
1,2,3-Triazine, 4,5,6-trifluoro-
2-????-1-???????
2,7-???? ?????
?? ??
2-???-1,5-????????
Lithol Red
disodium 2-[[1-(2,5-dichloro-4-sulphonatophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]naphthalene-1-sulphonate
?? 195 ????
??205?
2-???-5-???-7-?? ?
3-Hydroxy-N-2-naphthyl-2-naphthamide
?? 141 ????
6-AMINO-1-NAPHTHOL
1,2-????????
??-?????
6-Amino-1-naphthalenesulfonic acid
2-??????-5-???
disodium 2-[[1-(2-chloro-5-sulphonatophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]naphthalene-1-sulphonate
ACID YELLOW 19
???? ? ?? ??
???( 396)?? ??
| ??? | ?? | ??? | ?? | ?? ? | ?? |
|---|---|---|---|---|---|
| Hebei Chuanghai Biotechnology Co., Ltd | +86-15350571055 |
Sibel@chuanghaibio.com | China | 8737 | 58 |
| Hebei Chuanghai Biotechnology Co,.LTD | +86-86-13131129325 |
sales1@chuanghaibio.com | China | 5218 | 58 |
| Hebei Zhuanglai Chemical Trading Co Ltd | +86-16264648883 |
niki@zlchemi.com | China | 7240 | 58 |
| career henan chemical co | +86-0371-86658258 |
sales@coreychem.com | China | 29766 | 58 |
| NINGBO INNO PHARMCHEM CO., LTD. | 13867897135 |
sales@nbinno.com | CHINA | 920 | 58 |
| Xiamen AmoyChem Co., Ltd | +86-86-5926051114 |
sales@amoychem.com | China | 6361 | 58 |
| Shandong chuangyingchemical Co., Ltd. | 18853181302 |
sale@chuangyingchem.com | CHINA | 5898 | 58 |
| BOC Sciences | +1-631-485-4226 |
inquiry@bocsci.com | United States | 19935 | 58 |
| CONIER CHEM AND PHARMA LIMITED | |
sales@conier.com | China | 49906 | 58 |
| Richest Group Ltd | 18017061086 |
oled@richest-group.com | CHINA | 5597 | 58 |