1,2,3-Trimethoxybenzol

Bezeichnung:1,2,3-Trimethoxybenzol

Englisch Name:1,2,3-Trimethoxybenzene

CBNumberCB4332644

SummenformelC9H12O3

Molgewicht168.19

Synonyma

1,2,3-Trimethoxybenzol

1,2,3-Trimethoxybenzol physikalisch-chemischer Eigenschaften

Schmelzpunkt	43-47 °C (lit.)
Siedepunkt	241 °C (lit.)
Dichte	1.112 g/mL at 25 °C (lit.)
Brechungsindex	1.5470 (estimate)
Flammpunkt	>230 °F
storage temp.	Sealed in dry,Room Temperature
Löslichkeit	Chloroform (Slightly), DMSO (Slightly)
Aggregatzustand	Powder
Farbe	White to dark beige
Wasserlöslichkeit	Insoluble in water.
BRN	1910422
LogP	1.530
CAS Datenbank	634-36-6(CAS DataBase Reference)
NIST chemische Informationen	1,2,3-Trimethoxybenzene(634-36-6)
EPA chemische Informationen	Benzene, 1,2,3-trimethoxy- (634-36-6)

Sicherheit

Gefahreninformationscode (GHS)

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
WHITE TO DARK BEIGE POWDER
Verwenden
1,2,3-Trimethoxybenzene was used to study the effect of solvent on photoinduced electron-transfer reactions.
Verwenden
1,2,3-Trimethoxybenzene can be used for RSM-optimised slow pyrolysis of rice husk for bio-oil production.
Definition
ChEBI: A methoxybenzene that is benzene substituted by methoxy groups at positions 1, 2 and 3 respectively.
Allgemeine Beschreibung
1,2,3-Trimethoxybenzene on condensation with 2,4-diamino-5-(hydroxymethyl)pyrimidine yields 2,4-diamino-5-(2,3,4-trimethoxybenzyl)pyrimidine.
Synthese
Aqueous sodium hydroxide (40%，150 ml) is added dropwise during3-4 hr to a stirred mixture of pyrogallol (42 g，0.33 mole)，sodiumhydrosulphite (10 g,0.057 mole)，dimethyl sulphate (146 ml，194.60 g,1.54 mole) kept at 18-22°. Ice (1 kg) is then added and the reactionmixture left overnight. The separated solid is filtered and washed withwater. It is crystallised from methanol as colourless prisms. Yield 37.5 g(66.9%). M.p. 46-47°.Some more product (4 g, 7.1 %) is obtained byextraction of the mother liquor with ether (lit. m.p.46-47°).
läuterung methode
Sublime it under vacuum. [Beilstein 6 H 1081, 6 I 540, 6 II 1066, 6 III 6265, 6 IV 7329.]