Product Identification
【Product Name】2-Oxy-4-amino pyrimidine
【Synonyms】Cytosinimine 胞嘧啶
【CAS】71-30-7
【Formula】C4H5N3O
【Molecular Weight】111.1
【EINECS】200-749-5
【RTECS】UW7350150
【RTECS Class】Mutagen
【Merck】13,2824
【Beilstein/Gmelin】2637
【Beilstein Reference】4-25-00-03654
 
Physical and Chemical Properties
【Appearance】White solid.
【Solubility in water】Very soluble
【Melting Point】313-316℃
【Vapor Pressure】0.01 (232℃)
【Density】0.98631 - 0.99771 g/cm3 (55-25℃)
【pKa/pKb】9.40 (pKb)
【Partition Coefficient】-1.65
【Usage】Nitrogenous base.

First Aid Measures
【Ingestion】Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid if irritation or symptoms occur.
【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.
【Eyes】Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. If irritation develops, get medical aid.

Handling and Storage
【Storage】Store in a cool, dry place. Store in a tightly closed container.
【Handling】Use with adequate ventilation. Avoid contact with skin and eyes. Avoid ingestion and inhalation.

Hazards Identification
【Ingestion】No hazard expected in normal industrial use. Ingestion of large amounts may cause gastrointestinal irritation.
【Inhalation】No hazard expected in normal industrial use. May cause respiratory tract irritation.
【Skin】May cause skin irritation.
【Eyes】May cause eye irritation.
【EC Safety Phrase】S 22 24/25

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 minimize contact with skin.
【Respirators】Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Fire Fighting Measures
【Fire Fighting】Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.

Accidental Release Measures
【Small spills/leaks】Vacuum or sweep up material and place into a suitable disposal container.

Stability and Reactivity
【Stability】Stable under normal temperatures and pressures.
【Incompatibilities】Strong oxidizing agents.
【Decomposition】Carbon monoxide, oxides of nitrogen, carbon dioxide.