1,8-Dinitronaphthalene Struktur

1,8-Dinitronaphthalin

Bezeichnung:1,8-Dinitronaphthalin

CAS-Nr602-38-0

Englisch Name:1,8-Dinitronaphthalene

CBNumberCB7853946

SummenformelC10H6N2O4

Molgewicht218.17

MOL-Datei602-38-0.mol

Synonyma

1,8-Dinitronaphthalin

1,8-Dinitronaphthalin physikalisch-chemischer Eigenschaften

Schmelzpunkt	161 °C
Siedepunkt	358.84°C (rough estimate)
Dichte	1.4330 (rough estimate)
Brechungsindex	1.7040 (estimate)
Löslichkeit	DMSO (Slightly), Methanol (Slightly)
Aggregatzustand	Solid
Farbe	Pale Yellow to Light Yellow
Wasserlöslichkeit	34mg/L(15 ºC)
Stabilität	Stability Shock and heat sensitive - may react violently if heated or ground. Combustible. Incompatible with strong oxidizing agents.
InChIKey	AVCSMMMOCOTIHF-UHFFFAOYSA-N
CAS Datenbank	602-38-0(CAS DataBase Reference)
NIST chemische Informationen	Naphthalene, 1,8-dinitro-(602-38-0)
EPA chemische Informationen	1,8-Dinitronaphthalene (602-38-0)

Sicherheit

Kennzeichnung gefährlicher	F,Xi
R-Sätze:	11-36/37/38
S-Sätze:	16-26-36
RIDADR	2811
WGK Germany	3
RTECS-Nr.	QJ4552000
HazardClass	6.1(b)
PackingGroup	III

Gefahreninformationscode (GHS)

1,8-Dinitronaphthalene Chemische Eigenschaften,Einsatz,Produktion Methoden

Chemische Eigenschaften
Light yellow to Yellow to Orange powder to crystal.
Verwenden
1,8-Dinitronaphthalene (cas# 602-38-0) is a compound useful in organic synthesis.
Application
The reduction of 1,8-dinitronaphthalene to diaminonaphthalene is an important organic synthesis unit reaction and an important way to prepare diaminonaphthalene, and its product diaminonaphthalene is an important pigment intermediate. Diaminonaphthalene mainly includes 1,5-diaminonaphthalene and 1,8-diaminonaphthalene.
synthetische
Separation of dinitronaphthalene: Crude mixtures of dinitronaphthalene (5 g, from Table-3 run 8) was placed together with 50 mL acetone in a 100 mL flask, stirred and heated to reflux. The suspension was refluxing for 2 h and then cooled to 30 oC by stirred and filtered quickly. The precipitate was recrystallized by acetone and 1,5-dinitronaphthalene as light yellow crystals (1.725 g) was got. Then the filter liquor was concentrated to one-thirds of original volume, filtered, the precipitate was recrystallized by toluene and 1,8- dinitronaphthalene as light yellow crystals (1.987 g) was got.
1, 5-Dinitronaphthalene: m.p. 215-216 oC, 1H NMR (400 MHz, CDCl3): δ = 7.84 (t, 2H), 8.33 (d, 2H), 8.81 (d, 2H).
1, 8-Dinitronaphthalene: m.p. 172-173 oC, 1H NMR (400 MHz, CDCl3): δ = 7.98 (t, 2H), 8.51 (dd, 4H).
Zeolite-Assisted Regioselective Synthesis of Dinitronaphthalene
Definition
ChEBI: 1,8-dinitronaphthalene is a dinitronaphthalene carrying nitro groups at positions 1 and 8.
Allgemeine Beschreibung
1,8-dinitronaphthalene appears as yellow crystals. (NTP, 1992)
Air & Water Reaktionen
Insoluble in water.
Reaktivität anzeigen
1,8-Dinitronaphthalene is sensitive to heat and shock.
Brandgefahr
Flash point data for 1,8-Dinitronaphthalene is not available, however 1,8-Dinitronaphthalene is probably combustible.
Sicherheitsprofil
Suspected carcinogen. Mutation data reported. When heated to decomposition it emits toxic vapors of NOx
läuterung methode
Crystallise it from *benzene. [Beilstein 5 H 559, 5 II 455, 5 III 1608.]

1,8-Dinitronaphthalene Upstream-Materialien And Downstream Produkte

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