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???????-1,4-?????????
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???????-1,4-????????? ??
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- Inert atmosphere,Room Temperature
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- powder to crystal
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- Green to Dark green to Dark blue
- Merck
- 14,9249
- CAS ??????
- 1887-02-1(CAS DataBase Reference)
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| ?? ???? ?? | 36/37/38 | ||
|---|---|---|---|
| ????? | 26-36/37/39 | ||
| HS ?? | 2914.69.9000 | ||
| ???? ?? | KE-12391 |
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TETRAHYDROXY-1,4-BENZOQUINONE DISODIUM SALT is used as organic synthesis intermediate and pharmaceutical intermediate, mainly used in laboratory research and development process and chemical production process.Synthesis
（1)23℃After mixing 36 parts of paraldehyde with equal parts of water at ℃, transfer to a reaction kettle, and then add 12 parts of water through a separating funnel with liquid level, and 37 parts of nitric acid with a mass fraction of 63%. Slowly add to the liquid funnel, place in a 0 ° C water bath for 2 days, add 150 parts of a saturated solution of sodium bisulfite, precipitate a white precipitate, filter, wash with a small amount of alcohol, and dry to obtain glyoxal-sodium bisulfite;（2）Weigh 7 parts of glyoxal-sodium bisulfite and 50 parts of water, heat on a water bath to make a solution, add 10 parts of saturated sodium carbonate solution, continue to heat and stir in the water bath for 0.5 h, and dissolve and pour oxygen 0.01. L / m3 to generate tetrahydroxy-p-benzoquinone disodium salt.
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