Ammonium carbamate

  • Ammonium aminoformate
Formula
H2NCOONH4
Structure
Description
Colorless, rhombic crystals. Ammonia odor.
Uses
Ammoniating agent.

Registry Numbers and Inventories.
CAS
1111-78-0
EC (EINECS/ELINCS)
214-185-2
EC Class
harmful
RTECS
EY8575000
RTECS class
Other
UN (DOT)
9083
Merck
12,533
Beilstein/Gmelin
14637 (G)
Swiss Giftliste 1
G-1105
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
CH6N2O2
Formula mass
78.07
Melting point, °C
152
Vapor pressure, mmHg
492 (51 C)
Odor Threshold Odor threshold <5 ppm
Density
1.38 g/cm3 (20 C)
Solubility in water
Soluble
Heat of combustion
-469 kJ/mol

Hazards and Protection.
Storage
Store at cool temperatures.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear self-contained breathing apparatus, rubber gloves, safety glasses normal protective gear.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Apply water spray or mist to knock down vapors. Vapor knockdown water is corrosive or toxic and should be diked for containment. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Cover solids with a plastic sheet to prevent dissolving in rain or fire fighting water. Water spill: Neutralize with dilute acid.
Disposal code
14
Stability
Gradually loses ammonia in the air changing to ammonium carbonate.
Incompatibilities
Incompatible with strong acids and bases, and especially
Decomposition
Decomposes in air, changing to ammonium carbonate. Decomposition in hot water.

Fire.
Upper exp. limit, %
25
Lower exp. limit, %
16
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.)
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Moderate fire and explosion hazards when exposed to heat or flame
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
4
Exposure effects
Increases in blood pressure and pulse have been reported. An altered mental status (coma) may be seen, but is not characteristic unless hypoxemia occurs. Seizures may occur with extensive absorption. No data were available to assess the teratogenic potential of this agent. <br>Decreased egg production has occurred in experimental animals. Ammonia crosses the ovine placental barrier. <br>No data were available to assess the potential effects of exposure to this agent during lactation. <br>No information about possible male reproductive effects was found in available references.
   Ingestion
Nausea and vomiting occur frequently following ingestion. Swelling of the lips, mouth, and larynx, and oral or esophageal burns may occur if concentrated ammonia solutions are ingested.
   Inhalation
TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.
   Skin
Concentrated ammonia may produce liquifaction necrosis and deep penetrating burns.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Remove to fresh air.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
9083
Response guide
Hazard class
6.1
USCG CHRIS Code
ACM
 
HS Code
2924 19 00
 
Std. Transport #
4941145