Name | 3-hydroxynaphthalene-2,7-disulphonic acid |
Synonyms | Aids018328 Aids-018328 2-Naphtholdisodiumsulfonate 2-Naphthol-3,6-disulfonic acid 2-Naphthol-3,6-Disulfonic Acid 2-Hydroxynaphthalene-3,6-disulfonicacid 3-hydroxynaphthalene-2,7-disulfonic acid 3-Hydroxy-2,7-naphthalenedisulfonic acid 2,7-Naphthalenedisulfonicacid, 3-hydroxy- 3-hydroxynaphthalene-2,7-disulphonic acid |
CAS | 148-75-4 |
EINECS | 205-724-2 |
InChI | InChI=1/C10H8O7S2/c11-9-4-6-1-2-8(18(12,13)14)3-7(6)5-10(9)19(15,16)17/h1-5,11H,(H,12,13,14)(H,15,16,17) |
Molecular Formula | C10H8O7S2 |
Molar Mass | 304.3 |
Density | 1.7421 (rough estimate) |
Boling Point | 415.13°C (rough estimate) |
pKa | -0.20±0.40(Predicted) |
Storage Condition | Room Temprature |
Refractive Index | 1.6000 (estimate) |
Physical and Chemical Properties | White needle-like crystals, soluble in water and alcohol, almost insoluble in ether. Easily dissolved. The product of the sodium salt is called R salt ([135-51-3]), white needle-like crystals, easily soluble in water, slightly soluble in alcohol, insoluble in benzene. The aqueous solution has blue-green fluorescence. Deliquescence. |