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| Formula = C<sub>2</sub>H<sub>5</sub>NO<sub>2</sub> | Formula = C<sub>2</sub>H<sub>5</sub>NO<sub>2</sub>
| MolarMass =75 g/mol | MolarMass =75 g/mol
| Appearance = | Appearance = white solid
| Density = | Density = 1.136 (56 °C)
| MeltingPtC = 52 | MeltingPtC = 52
| BoilingPtC = 177 | BoilingPtC = 177
| Solubility = | Solubility = good
}} }}
| Section3 = {{Chembox Hazards | Section3 = {{Chembox Hazards
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'''Methyl carbamate''' (also called '''methylurethane''', or '''urethylane''') is an ] and the simplest ester of the hypothetical ] (NH<sub>2</sub>COOH). Its sum formula is C<sub>2</sub>H<sub>5</sub>NO<sub>2</sub>. '''Methyl carbamate''' (also called '''methylurethane''', or '''urethylane''') is an ] and the simplest ester of ] (H<sub>2</sub>NCO<sub>2</sub>H). It is a colourless solid.<ref> Peter Jäger, Costin N. Rentzea and Heinz Kieczka "Carbamates and Carbamoyl Chlorides" in Ullmann's Encyclopedia of Industrial Chemistry, 2012, Wiley-VCH, Weinheim. {{DOI|10.1002/14356007.a05_051}}</ref>


Methyl carbamate is prepared by the reaction of methanol and ]:
⚫ Methyl carbamate is formed by the reaction of ] with ] or ]. According to ] ] number 2834799 ] can be reacted with ] to form it using ] as a reagent. Unlike its close relative ] it is not mutagenic in ] (it tested negative in the ]), but it is mutagenic in ].<ref>P. Foureman, J.M. Mason, R. Valencia and S. Zimmering, ''Environ. Mol. Mutagen.'', 1994, '''23''' (1), 51 - 63.</ref> Experimental evidence does show that it is a carcinogen in ], and not carcinogenic in mice. The compound is "known to the state of California to cause cancer" per ].<ref></ref>
:CO(NH<sub>2</sub>)<sub>2</sub> + CH<sub>3</sub>OH → CH<sub>3</sub>OC(O)NH<sub>2</sub> + NH<sub>3</sub>
It also forms in the reaction of ] with ] or ].

==Safety and occurrence==
⚫ Unlike its close relative ] it is not mutagenic in ] (it tested negative in the ]), but it is mutagenic in ].<ref>P. Foureman, J.M. Mason, R. Valencia and S. Zimmering, ''Environ. Mol. Mutagen.'', 1994, '''23''' (1), 51 - 63.</ref> Experimental evidence does show that it is a carcinogen in ], and not carcinogenic in mice. The compound is "known to the state of California to cause cancer" per ].<ref></ref>


The compound was detected in ]s preserved with ].<ref></ref> The compound was detected in ]s preserved with ].<ref></ref>

Revision as of 15:50, 8 March 2014

Methyl carbamate
Structural formula
Ball-and-stick model
Names
IUPAC name Methyl carbamate
Identifiers
CAS Number
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.009.037 Edit this at Wikidata
KEGG
PubChem CID
CompTox Dashboard (EPA)
InChI
  • InChI=1S/C2H5NO2/c1-5-2(3)4/h1H3,(H2,3,4)Key: GTCAXTIRRLKXRU-UHFFFAOYSA-N
  • InChI=1/C2H5NO2/c1-5-2(3)4/h1H3,(H2,3,4)Key: GTCAXTIRRLKXRU-UHFFFAOYAJ
SMILES
  • O=C(OC)N
Properties
Chemical formula C2H5NO2
Molar mass 75 g/mol
Appearance white solid
Density 1.136 (56 °C)
Melting point 52 °C (126 °F; 325 K)
Boiling point 177 °C (351 °F; 450 K)
Solubility in water good
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). ☒N verify (what is  ?) Infobox references
Chemical compound

Methyl carbamate (also called methylurethane, or urethylane) is an organic compound and the simplest ester of carbamic acid (H2NCO2H). It is a colourless solid.

Methyl carbamate is prepared by the reaction of methanol and urea:

CO(NH2)2 + CH3OH → CH3OC(O)NH2 + NH3

It also forms in the reaction of ammonia with methyl chloroformate or dimethyl carbonate.

Safety and occurrence

Unlike its close relative ethyl carbamate it is not mutagenic in salmonella (it tested negative in the Ames test), but it is mutagenic in Drosophila. Experimental evidence does show that it is a carcinogen in rat, and not carcinogenic in mice. The compound is "known to the state of California to cause cancer" per Proposition 65.

The compound was detected in wines preserved with dimethyl dicarbonate.

Methyl carbamate is used by the textile industry to manufacture resins to be applied on polyester/cotton blend fabrics as durable-press finishes.

N-Methyl carbamates are widely used as insecticides. They have anticholinesterase activity without a cumulative effect.

See also

References

  1. Peter Jäger, Costin N. Rentzea and Heinz Kieczka "Carbamates and Carbamoyl Chlorides" in Ullmann's Encyclopedia of Industrial Chemistry, 2012, Wiley-VCH, Weinheim. doi:10.1002/14356007.a05_051
  2. P. Foureman, J.M. Mason, R. Valencia and S. Zimmering, Environ. Mol. Mutagen., 1994, 23 (1), 51 - 63.
  3. OEHHA
  4. Inchem.org
  5. National Toxocology Program
  6. National Pesticide Information Center at Oregon State University

External links

Categories: