Product Identification
【Product Name】Imidodicarbonic diamide
【Synonyms】Allophanamide；氨缩脲
【CAS】108-19-0
【Formula】C2H5N3O2
【Molecular Weight】103.08
【EINECS】203-559-0
【Merck】13,1305
【Beilstein/Gmelin】1703510
【Beilstein Reference】4-03-00-00141

Physical and Chemical Properties
【Appearance】Elongated plates from ethanol. Odorless.
【Solubility in water】Very soluble
【Melting Point】188℃
【Density】1.467 g/cm3 (10℃)
【pKa/pKb】10.17 (pKa)
【Partition Coefficient】-2.14
【Heat Of Combustion】-938.0 kJ/mol
【Usage】In analytical chemistry.

First Aid Measures
【Ingestion】Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
【Inhalation】Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
【Skin】Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
【Eyes】Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Handling and Storage
【Storage】Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture.
【Handling】Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.

Hazards Identification
【Ingestion】Causes gastrointestinal irritation with nausea, vomiting and diarrhea.
【Inhalation】May cause respiratory tract irritation.
【Skin】May cause skin irritation.
【Eyes】May cause eye irritation.
【EC Risk Phrase】R 36/37/38
【EC Safety Phrase】S 26 36

Exposure Controls/Personal Protection
【Personal Protection】Eyes: Wear appropriate protective eyeglasses or chemical safety ggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
【Respirators】A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Fire Fighting Measures
【Fire Fighting】Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Non-combustible, substance itself does not burn but may decompose upon heating to produce irritating, corrosive and/or toxic fumes. Extinguishing media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Accidental Release Measures
【Small spills/leaks】Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity
【Incompatibilities】Moisture.
【Stability】Stable at room temperature in closed containers under normal storage and handling conditions.
【Decomposition】Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.