尿素 UREA
一、化学名：尿素
二、分子式：CH4N2O
三、分子量：60.06
四、CAS：57-13-6
五、性状：无色或白色针状或棒状结晶体，工业或农业品为白色略带微红色固体颗粒，无臭无味,具有吸湿性。
六、用途：用于酵母食料、酵母发酵性焙烤制品、胶姆糖组织改进剂、含醇饮料、明胶制品、葡萄酒。
七、包装：内衬聚乙烯塑料袋，外套复合塑料编织袋包装，每袋净重25kg。
八、贮存与运输：本品应贮存在干燥通风清洁的库房中，装载运输时要轻装轻放，防止包装破损，防止受潮、受热，运输过程中防止雨淋受潮，应与有毒物品隔离。
质量指标 | Specification | USP32 | FCCVII |
含量（以干基记），w% | Content , w/% | 99.1-100.5 | 99.0-100.5 |
硫酸盐，w% ≤ | Sulfate, w/% ≤ | 0.01 | 0.01 |
乙醇不溶物，w% ≤ | Alcohol-insoluble residue,w% ≤ | 0.04 | 0.04 |
氯化物（以CL计），w% ≤ | Chlorides (Cl) ,w/% ≤ | 0.007 | 0.007 |
灼烧残渣，w% ≤ | Ignition Residue, w/% ≤ | 0.1 | 0.1 |
铅，w% ≤ | Lead (Pb) ,mg/kg ≤ | ———— | 0.0005 |
干燥减量，w% ≤ | Loss on Drying, w/% ≤ | ———— | 1.0 |
重金属（以Pb计），w% ≤ | Heavy melt (Pb) ,w% ≤ | 0.002 | ———— |
1、Chemical Name: Urea
2、Molecular Formula : CH4N2O
3、Molecular Weight: 60.06
4、CAS：57-13-6
5、Character:Colorless or white needle-shaped or rod-shaped crystals, technical or agricultural grade urea are the white with slightly reddish solid particles, odorless and tasteless, and it’s hygroscopic.
6、Usage: It’s used for yeast food, yeast-fermentation baking products, gum sugar tissue improver, alcoholic beverages, gelatin products, and wine.
7、Packing: It is packed with a polyethylene bag as the inner layer, and a compound plastic woven bag as the outer layer. The net weight of each bag is 25kg .
8、Storage and Transport: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.
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