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3,5-Dimethoxyphenol

3,5-Dimethoxyphenol ??? ???
?? ??:
500-99-2
???:
3,5-Dimethoxyphenol
???(??):
Phenol, 3,5-dimethoxy-;NSC 70955;Taxicatigenin;3,5-DIMETHOXYPHENOL;3,5-Dimethoxyphenol>3,5-Dimethoxyphenol,97%;3,5-DiMethoxyphenol 99%;DIMETHOXYPHENOL, 3,5-(P);Phloroglucinol Impurity 24;Phloroglucin dimethyl ether
CBNumber:
CB2268778
???:
C8H10O3
??? ??:
154.16
MOL ??:
500-99-2.mol
MSDS ??:
SDS

3,5-Dimethoxyphenol ??

???
40-43 °C (lit.)
?? ?
172-175 °C/17 mmHg (lit.)
??
1.1690 (rough estimate)
???
1.4745 (estimate)
???
173 °F
?? ??
Inert atmosphere,Room Temperature
???
?????(?? ???), ???????(?? ???), ???(?? ???)
???
?????(??), ???????(??), ???(??)? ???
?? ?? (pKa)
pK1:9.345 (25°C)
??? ??
??
??
??? ??~???~?? ??~??
???
???, ???, ??, ?(?? ???), ?????? ?????.
??
Air & Light Sensitive
BRN
1239156
InChIKey
XQDNFAMOIPNVES-UHFFFAOYSA-N
LogP
1.640
CAS ??????
500-99-2(CAS DataBase Reference)
NIST
Phenol, 3,5-dimethoxy-(500-99-2)
EPA
Phenol, 3,5-dimethoxy- (500-99-2)
??
  • ?? ? ?? ??
  • ?? ? ???? ?? (GHS)
??? ?? Xi
?? ???? ?? 36/37/38
????? 26-36-37/39
WGK ?? 3
F ?????? 10
?? ?? ?? Irritant
HS ?? 29095090
????(GHS): GHS hazard pictograms
?? ?: Warning
??·?? ??:
?? ??·?? ?? ?? ?? ?? ?? ? ?? ?? P- ??
H315 ??? ??? ??? ????? ?? ????? ?? 2 ?? GHS hazard pictograms P264, P280, P302+P352, P321,P332+P313, P362
H319 ?? ?? ??? ??? ?? ? ?? ?? ??? ?? ?? 2A ?? GHS hazard pictograms P264, P280, P305+P351+P338,P337+P313P
H335 ?? ???? ??? ? ?? ?? ???? ?? - 1? ??;???? ?? ?? 3 ?? GHS hazard pictograms
??????:
P261 ??·?·??·???·??·...·????? ??? ????.
P264 ?? ??? ?? ??? ????.
P264 ?? ??? ?? ??? ????.
P271 ?? ?? ??? ? ?? ???? ?????.
P280 ????/???/???/?????? ?????.
P302+P352 ??? ??? ??? ?? ????.
P305+P351+P338 ?? ??? ? ?? ?? ???? ????. ???? ?????? ?????. ?? ????.
NFPA 704
1
2 0

3,5-Dimethoxyphenol MSDS


Phloroglucinol dimethyl ether

3,5-Dimethoxyphenol C??? ??, ??, ??

??? ??

slightly pink to yellow crystalline powder

??

3,5-Dimethoxyphenol is a phenol derivative as antinitrosating agent.

Synthesis

Ethanethiol (1.25g, 1.5 ml, 0.02 mole) dissolved in N, N- dimethyl-formamide (20 ml) is added to a suspension of sodium hydride (1 g of 50%oil dispersion) in dry DMF (10 ml) under an atmosphere of nitrogen. The mixture is stirred for 5 min under anhydrous conditions. A solution of phloroglucinol trimethyl ether (1.14) (1 g,0.006 moles) in dry DMF (10 ml)is added, and the mixture is refluxed for 3 hr. The reaction mixture is cooled and acidified with hydrochloric acid (10%). It is extracted with ether(3 x 50 ml). The ether extract is washed with water and extracted with sodium hydroxide solution (5%). The clear alkaline extract is acidified with hydrochloric acid. The mixture is extracted with ether. The ether extract is washed with water, ried (anhydrous sodium sulphate), and drilled. 3,5-Dimethoxyphenol is obtained as an oil. Yield 0.9 g (98.1%).B.p.198-199°/30 mm.
3,5-Dimethoxyphenol

Purification Methods

Purify the phenol by distillation followed by sublimation in a vacuum. [Beilstein 6 IV 7362.]

3,5-Dimethoxyphenol ?? ?? ? ???

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3,5-Dimethoxyphenol ?? ??

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3,5-Dimethoxyphenol ?? ??:

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