Home Categories Chemical Reagents Ethyl carbazate
A4021012

Ethyl carbazate , ≥99.0% , 4114-31-2

Synonym(s):
Hydrazinocarboxylic acid ethyl ester

CAS NO.:4114-31-2

Empirical Formula: C3H8N2O2

Molecular Weight: 104.11

MDL number: MFCD00007595

EINECS: 223-903-3

Pack Size Price Stock Quantity
5G RMB23.20 In Stock
25G RMB36.80 In Stock
100G RMB79.20 In Stock
500G RMB319.20 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 44-47 °C (lit.)
Boiling point: 108-110 °C/22 mmHg (lit.)
Density  1.2719 (rough estimate)
refractive index  1.4715 (estimate)
Flash point: 187 °F
storage temp.  Keep in dark place,Inert atmosphere,Store in freezer, under -20°C
form  Powder
pka 10.72±0.20(Predicted)
color  White to cream
Water Solubility  Very soluble in water.
Sensitive  Moisture Sensitive
BRN  878265
InChIKey VYSYZMNJHYOXGN-UHFFFAOYSA-N
CAS DataBase Reference 4114-31-2(CAS DataBase Reference)
NIST Chemistry Reference Hydrazinecarboxylic acid, ethyl ester(4114-31-2)
EPA Substance Registry System Hydrazinecarboxylic acid, ethyl ester (4114-31-2)

Description and Uses

Prepare 4-phenylurazole from ethyl carbazate and then oxidize the urazole with gaseous dinitrogen tetroxide to yield 4-phenyl-1,2,4-tri- azoline-3,5-dione la. Modification of the ethyl carbazate procedure in which analytically pure monoalkylhydrazine hydrochlorides were isolated in greater than 90% yield, starting from a ketone or aldehyde. Treatment of primary amines is with chloroamine or hydroxylamine-0-sulfonic acid and the condensation of a carbonyl compound with ethyl carbazate. The FeCl 3 -catalyzed reaction of ethyl carbazate (2 b) proceeded readily to give β-hydroxyester 3 b in better yield. A new one-pot neat synthesis of some 5-aryl-2,4-dihydro-3H-1,2,4-triazol-3-ones through cyclocondensation of ethyl carbazate with aryl nitriles catalyzed by DMAP as an efficient and basic nucleophilic catalyst is described.

Safety

Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P264-P271-P280-P302+P352-P305+P351+P338
Hazard Codes  Xi,T
Risk Statements  36/37/38-25
Safety Statements  26-36-45
RIDADR  2811
WGK Germany  3
RTECS  FE2545000
TSCA  Yes
HazardClass  6.1
PackingGroup  III
HS Code  29280090

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