A0970950
1,5-Naphthalenedisulfonicacid , 99% , 81-04-9
Synonym(s):
1,5-Naphthalenedisulfonic acid;1,5-Naphthalenedisulfonic acid disodium salt;Armstrong acid
CAS NO.：81-04-9
Empirical Formula: C10H8O6S2
Molecular Weight: 288.3
MDL number: MFCD00064178
EINECS: 216-732-0
| Pack Size | Price | Stock | Quantity |
| 25g | RMB35.20 | In Stock |
|
| 100g | RMB77.60 | In Stock |
|
| 500g | RMB225.60 | In Stock |
|
| others | Enquire |
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 242.5°C (rough estimate) |
| Boiling point: | 400.53°C (rough estimate) |
| Density | 1.7040 |
| vapor pressure | 0Pa at 25℃ |
| refractive index | 1.5630 (estimate) |
| storage temp. | Store below +30°C. |
| pka | -0.60±0.40(Predicted) |
| color | Crystals or plates |
| Water Solubility | 90.52g/L at 25℃ |
| LogP | -0.94 |
Description and Uses
The disodium salt of naphthalene-1,5- disulfonic acid gives 1-hydroxynaphthalene-5- sulfonic acid or 1,5-dihydroxynaphthalene (see Section 3.3) by fusion processes. Further sulfonation of the disulfonated reaction mixture gives naphthalene-1,3,5-trisulfonic acid, and nitration leads to 1- and 2-nitronaphthalene-4,8-disulfonic acids as intermediates to the corresponding aminonaphthalene disulfonic acids. Naphthalene-1,5-disulfonic acid is an important stabilizer for diazo compounds.
Safety
| Symbol(GHS) |  GHS05 |
| Signal word | Danger |
| Hazard statements | H314-H318 |
| Precautionary statements | P260-P280-P301+P330+P331-P303+P361+P353-P304+P340-P305+P351+P338-P310 |
| Hazard Codes | C |
| Risk Statements | 34 |
| Safety Statements | 22-24/25-45-36/37/39-26 |
| RIDADR | UN 2585 |
| WGK Germany | 1 |
| HazardClass | 8 |
| PackingGroup | III |
| HS Code | 2904100090 |
| Toxicity | LD50 orl-rat: 30 g/kg GISAAA 45(3),73,80 |
