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Oxamide

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Oxamide Basic information

Product Name:
Oxamide
Synonyms:
  • oxamimidicacid
  • Oxalic diamide
  • Oxamide, 98+%
  • OXAMIDE,POWDER,PURIFIED
  • Oxamide,Oxalic acid diamide
  • Ethanedioic acid diaMide
  • 1-carbamoyl-formimidic acid
  • OxaMide, 98% 100GR
CAS:
471-46-5
MF:
C2H4N2O2
MW:
88.07
EINECS:
207-442-5
Mol File:
471-46-5.mol
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Oxamide Chemical Properties

Melting point:
>300 °C (lit.)
Boiling point:
162.99°C (rough estimate)
Density 
1,667 g/cm3
refractive index 
1.4264 (estimate)
storage temp. 
Sealed in dry,Room Temperature
solubility 
0.37g/l
pka
13.28±0.50(Predicted)
form 
Fine Crystalline Powder
color 
White
Water Solubility 
insoluble
Merck 
14,6918
BRN 
1743262
CAS DataBase Reference
471-46-5(CAS DataBase Reference)
NIST Chemistry Reference
Oxalamide(471-46-5)
EPA Substance Registry System
Ethanediamide (471-46-5)
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Safety Information

Hazard Codes 
Xn,Xi
Risk Statements 
22-36/38-36/37/38
Safety Statements 
26-36-37/39
RIDADR 
2811
WGK Germany 
3
RTECS 
RO4900000
TSCA 
Yes
HazardClass 
6.1(b)
PackingGroup 
III
HS Code 
29241900
Toxicity
LD50 orl-rat: 447 mg/kg GISAAA 47(7),78,82

MSDS

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Oxamide Usage And Synthesis

Chemical Properties

white fine crystalline powder

Chemical Properties

Oxamide, H2NCOCONH2, mol wt 80.07, is sparingly soluble in water and insoluble in various organic solvents. It melts at about 350 °C, with accompanying decomposition. Because of the low solubility in water, the compound is granulated and used as a slow-release nitrogen fertilizer.

Uses

Oxamide is used as a stabilizer for nitrocellulose preparations. It also finds use in APCP rocket motors as a high performance burn rate suppressant.

Preparation

Oxamide can be prepared, for example, by pyrolyzing ammonium oxalate or by allowing hydrogen cyanide to react with hydrogen peroxide. It is also known to prepare oxamide by a reaction between dimethyl oxalate and ammonia, wherein methanol is produced in addition to oxamide. The preparation was carried out as a batch process in a liquid phase, with methanol acting as a solvent into which the dimethyl oxalate and ammonia are fed. The oxamide was separated from the solution by crystallization, and the remaining mother liquor was distilled to recover methanol and ammonia, which had been left over from the reaction.

Definition

ChEBI: A dicarboxylic acid diamide of oxalic acid.

Agricultural Uses

Oxamide (H2 NCOCONH2 ), a diamide of oxalic acid, is a white crystalline and non-hygroscopic fertilizer containing about 32% nitrogen, most of which is waterinsoluble at 25°C. Oxamide is made from cyanogen hydrolysis in an acid medium. It releases nitrogen slowly and hence is used as a slow-release fertilizer. It is decomposed by soil micro-organisms in the soil.

Safety Profile

Poison by ingestion and intraperitoneal routes. An eye irritant. When heated to decomposition it emits toxic fumes of NOx. See also AMIDES.

Purification Methods

Crystallise oxamide from water, grind it and dry it in an oven at 150o. [Beilstein 2 IV 1860.]

Oxamide Preparation Products And Raw materials

Preparation Products

OxamideSupplier

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