Cyclohexan-1,2-diondioxim

Bezeichnung:Cyclohexan-1,2-diondioxim

CAS-Nr492-99-9

Englisch Name:1,2-CYCLOHEXANEDIONE DIOXIME

CBNumberCB4450690

SummenformelC6H10N2O2

Molgewicht142.16

MOL-Datei492-99-9.mol

Synonyma

Cyclohexan-1,2-diondioxim

Cyclohexan-1,2-diondioxim physikalisch-chemischer Eigenschaften

Schmelzpunkt	188-190 °C (dec.)
Siedepunkt	259.72°C (rough estimate)
Dichte	1.36
Brechungsindex	1.5010 (estimate)
storage temp.	2-8°C
Löslichkeit	0.8% in water, readily soluble in alcohol, diethyl ether and acetone.
Aggregatzustand	White crystalline material. Melting point 184-189°C.
pka	10.70±0.20(Predicted)
Farbe	White to Yellow to Orange
Wasserlöslichkeit	Soluble in water.
Merck	14,6559
BRN	1909047
CAS Datenbank	492-99-9(CAS DataBase Reference)
EPA chemische Informationen	1,2-Cyclohexanedione, dioxime (492-99-9)

Sicherheit

Kennzeichnung gefährlicher	Xn
R-Sätze:	36/37/38-22
S-Sätze:	22-24/25-36-26
WGK Germany	3
F	10
TSCA	Yes
HS Code	2928.00.5000

1,2-CYCLOHEXANEDIONE DIOXIME Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R22:Gesundheitsschädlich beim Verschlucken.
S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
Chemische Eigenschaften
beige to brown crystalline powder or needles
Verwenden
Analytical reagent for nickel and palladium.
Verwenden
Nioxime is an analogue of dimethylglyoxime, with which, in general, the same determinations can be accomplished as with dimethylglyoxime. It is, however, more soluble in water than dimethylglyoxime so that it can be applied as an aqueous solution for the precipitation of metal complexes. In this way the potential error caused by the increased solubility of the complex in the presence of alcohol is eliminated. In gravimetric determinations the higher molecular weight of nioxime presents a further advantage (the molecular weight of the nioxime complex of nickel is 340.99, while that of the nickel complex of dimethylglyoxime is 288.91).
Recently nioxime has been successfully applied for the gravimetric determination of bismuth/34 , 477) The bismuth nioxime complex was precipitated selectively from a solution containing about 30 cations (among them nickel and palladium) using the masking action of EDTA at about pH 12.
Verwenden
1,2-Cyclohexanedione dioxime acts as a chelating ligand forming complexes with many transition metal ions like Co, Fe and Ni. It is used in photometric detection of metal ions.
läuterung methode
Crystallise Nioxime from alcohol/water and dry it in a vacuum at 40o. Also 2.5g of oxime have been recrystallised from 550mL of H2O using Fe free Norit. It forms complexes with Ni and Pd. [Hach et al. Org Synth 32 35 1952.] [Beilstein 7 IV 1982.]

1,2-CYCLOHEXANEDIONE DIOXIME Upstream-Materialien And Downstream Produkte

Cyclohexan-1,2-diondioxim Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

492-99-9, 1,2-CYCLOHEXANEDIONE DIOXIME Verwandte Suche:

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