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| | 4,4'-Diamino-2,2'-stilbenedisulfonic acid Basic information |
| Product Name: | 4,4'-Diamino-2,2'-stilbenedisulfonic acid | | Synonyms: | diaminostilbenedisulfonicacid;4,4'-Diaminodiphenylethylene-2,2'-disulfonic acid;4',4" Diamino stillbene 2'2" disulphonic acid;1,2-bis(4-amino-2-sulfophenyl)ethene;4,4'-Diamino-2,2'-stibenedisulfonic acid;4,4'-DIAMINO-2,2'-STILBENEDISULFONIC ACI D, TECH., 85%;2,2’-(1,2-ethenediyl)bis[5-amino-benzenesulfonicaci;2,2’-(1,2-ethenediyl)bis[5-amino-Benzenesulfonicacid | | CAS: | 81-11-8 | | MF: | C14H14N2O6S2 | | MW: | 370.4 | | EINECS: | 201-325-2 | | Product Categories: | Stilbenes;Fluorescent Labels & Indicators;Intermediates of Dyes and Pigments;bc0001 | | Mol File: | 81-11-8.mol |  |
| | 4,4'-Diamino-2,2'-stilbenedisulfonic acid Chemical Properties |
| Melting point | 300 °C | | density | 1.4732 (rough estimate) | | vapor pressure | 1.3hPa at 25℃ | | refractive index | 1.6510 (estimate) | | storage temp. | Keep in dark place,Inert atmosphere,Room temperature | | solubility | Aqueous Base (Slightly) | | pka | -1.58±0.50(Predicted) | | form | Crystalline Powder | | color | Cream to yellow-brown | | Water Solubility | <0.1 g/100 mL at 23 ºC | | Merck | 14,595 | | BRN | 629516 | | Stability: | Stable. Combustible. Incompatible with iron, strong oxidizing agents. | | LogP | -1.7--1.42 at 25℃ | | CAS DataBase Reference | 81-11-8(CAS DataBase Reference) | | EPA Substance Registry System | Amsonic acid (81-11-8) |
| | 4,4'-Diamino-2,2'-stilbenedisulfonic acid Usage And Synthesis |
| Chemical Properties | Light Yellow Powder | | Uses | In manufacture of dyes, bleaching agents. | | Uses | 4,4’-Diaminostilbene-2,2’-disulfonic Acid, 95+% (cas# 81-11-8) is a compound useful in organic synthesis. | | General Description | Odorless yellowish microscopic needles or cream-colored powder. pH approximately 4.3 at 30 g/L water (suspension). | | Air & Water Reactions | Insoluble in water. | | Reactivity Profile | 4,4'-Diamino-2,2'-stilbenedisulfonic acid is incompatible with iron. 4,4'-Diamino-2,2'-stilbenedisulfonic acid forms sparingly water-soluble, crystalline salts with many bisquaternary ammonium bases. | | Fire Hazard | Flash point data for 4,4'-Diamino-2,2'-stilbenedisulfonic acid are not available; however, 4,4'-Diamino-2,2'-stilbenedisulfonic acid is probably combustible. |
| | 4,4'-Diamino-2,2'-stilbenedisulfonic acid Preparation Products And Raw materials |
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