用途： 用作有机合成原料、医药、塑料和染料中间体。是巴比妥、维生素B12等药品的中间体，也可用作聚合催化剂和制取苯并咪唑酮类有机颜料。还可用作比色法测定糖醛及多缩戊糖的试剂。

巴比妥酸产品说明
【Product Name】Malonylurea　巴比妥酸
【Synonyms】2,4,6(1H,3H,5H)-Pyrimidinetrione
2,4,6-Pyrimidinetriol
2,4,6-Trihydroxypyrimidine
6-Hydroxyuracil
Malonylurea

【CAS】67-52-7
【Formula】C4H4N2O3
【Molecular Weight】128.09
【EINECS】200-658-0
【RTECS】CP8000000
【RTECS Class】Drug
【Merck】13,966
【Beilstein/Gmelin】120502
【Beilstein Reference】5-24-09-00078

Physical ａnd Chemical Properties
【Appearance】odorless white to off-white solid
【Solubility in water】Very soluble
【Melting Point】250 - 252
【Boiling Point】441
【pKa/pKb】4.00 (pKa)
【Partition Coefficient】-1.36

【Usage】Production of plastics, pharmaceuticals.

First Aid Measures
【Ingestion】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.

【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. Get medical aid.

Handling ａnd Storage
【Storage】Store in a cool, dry place. Keep from contact with oxidizing materials.

【Handling】Use with adequate ventilation. Avoid contact with eyes, skin, ａnd clothing. Avoid ingestion ａnd inhalation.

Hazards Identification
【Ingestion】Ingestion of large amounts may cause gastrointestinal irritation. Expected to be a low ingestion hazard.

【Inhalation】May cause respiratory tract irritation. Low hazard for usual industrial handling.

【Skin】Dust may cause mechanical irritation. Low hazard for usual industrial handling.

【Eyes】Dust may cause mechanical 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 goggles 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. This material in sufficient quantity ａnd reduced particle size is capable of creating a dust explosion. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.

Accidental Release Measures
【Small spills/leaks】Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions.

Stability ａnd Reactivity

【Disposal Code】4

【Stability】Stable under normal shipping ａnd handling conditions. However, may decompose if heated.

【Incompatibilities】Strong oxidizing agents.

【Decomposition】Nitrogen oxides, carbon monoxide, carbon dioxide.
Transport Information

【HS Code】2933 52 00