Urea 尿素
CAS 57-13-6 MFCD00008022
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信息真实价格透明
资金保障
专业采购外包团队在线服务
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现货库存
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分类
- {SNA} Bioactive Small Molecules, Biochemicals, Biochemicals an
- {SNA} Buffers and Reagents, Buffers, Reagents, & Stains, Chaotropic Agents, SDS-PAGE, Urea, Western Blotting, 分子生物学, 变性剂, 生化试剂, 蛋白电泳, 蛋白质组学
产品应用
- 校准仪器和装置;评价方法;工作标准;质量保证/质量控制
相关文献及参考
- [2]. Pan M, et al. Urea: a comprehensive review of the clinical literature. Dermatol Online J. 2013 Nov 15;19(11):20392.
- [3]. Wang H, et al. Urea. Subcell Biochem. 2014;73:7-29.
- For a procedure for conversion of carboxylic acids to primary amides by heating with urea, see: Org. Synth. Coll., 3, 768 (1955); 4, 513 (1963).
- For the one-pot conversion of carboxylic acids to nitriles, by heating with urea in the presence of 1.5-2.0 moles of sulfamic acid, see: Chimia, 25, 94 (1971).
- Reacts with alcohols on prolonged heating to give alkyl carbamates; see, e.g.: Org. Synth. Coll., 1, 140 (1941).
- Short: II/14a
- Short: II/19b
- Widely used in diazotization reactions for the destruction of excess HNO2.
- [1]. Bennion BJ, et al. The molecular basis for the chemi
- [1]. Bennion BJ, et al. The molecular basis for the chemical denaturation of proteins by urea. Proc Natl Acad Sci U S A. 2003 Apr 29;100(9):5142-7.
安全信息
GHS Symbol
- S37 Wear suitable gloves 戴适当手套;
- R36/37/38 Irritating to eyes, respiratory system and skin 对眼睛、呼吸系统和皮肤有刺激性
- R38 Irritating to skin 刺激皮肤
- P264 Wash hands thoroughly after handling. 处理后要彻底洗净双手。
- P302+P352
- P305+P351+P338+P337+P313
- P332+P313
- P337+P313
- H316 Causes mild skin irritation 会轻微的刺激皮肤
TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 821 gm/kg/1Y-C TOXIC EFFECTS : Tumorigenic - neoplastic by RTECS criteria Blood - tumors Blood - lymphoma, including Hodgkin's disease REFERENCE : JEPTDQ Journal of Environmental Pathology and Toxicology. (Park Forest South, IL) V.1-5(3), 1977-81(?). For publisher information, see JEPOEC. Volume(issue)/page/year: 3(5-6),149,1980
TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : 394 gm/kg/1Y-C TOXIC EFFECTS : Tumorigenic - Carcinogenic by RTECS criteria Blood - tumors Blood - lymphoma, including Hodgkin's disease REFERENCE : JEPTDQ Journal of Environmental Pathology and Toxicology. (Park Forest South, IL) V.1-5(3), 1977-81(?). For publisher information, see JEPOEC. Volume(issue)/page/year: 3(5-6),149,1980
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 8471 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : GISAAA Gigiena i Sanitari
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intraperitoneal SPECIES OBSERVED : Rodent - rat DOSE/DURATION : >5 gm/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : APEPA2 Naunyn-Schmiedebergs Archiv fuer Pharmakologie und Experimentelle Pathologie. (Berlin, Ger.) V.254-263, 1966-69. For publisher information, see NSAPCC. Volume(issue)/page/year: 257,296,1967
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intratracheal SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 567 mg/kg TOXIC EFFECTS : Behavioral - convulsions or effect on seizure threshold Lungs, Thorax, or Respiration - dyspnea Blood - methemoglobinemia-carboxyhemoglobin REFERENCE : GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-36, 1957-1992. For publisher information, see MTPEEI Volume(issue)/page/year: 30(3),43,1986
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intravenous SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 5300 mg/kg TOXIC EFFECTS : Behavioral - altered sleep time (including change in righting reflex) Behavioral - changes in motor activity (specific assay) Behavioral - antipsychotic REFERENCE : OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 13,749,1977
TYPE OF TEST : Cytogenetic analysis TEST SYSTEM : Rodent - hamster Lung DOSE/DURATION : 13 gm/L REFERENCE : GMCRDC Gann Monograph on Cancer Research. (Plenum Pub. Corp., 233 Spring St., New York, NY 10013) No. 11- 1971- Volume(issue)/page/year: 27,95,1981
TYPE OF TEST : Mutation in mammalian somatic cells TEST SYSTEM : Rodent - mouse Lymphocyte DOSE/DURATION : 265 mmol/L REFERENCE : MUTAEX Mutagenesis. (Oxford Univ. Press, Pinkhill House, Southfield Road, Eynsham, Oxford OX8 1JJ, UK) V.1- 1986- Volume(issue)/page/year: 3,193,1988
TYPE OF TEST : DNA damage TEST SYSTEM : Rodent - mouse Lymphocyte DOSE/DURATION : 628 mmol/L REFERENCE : MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 203,155,1988
TYPE OF TEST : Cytogenetic analysis TEST SYSTEM : Human Leukocyte DOSE/DURATION : 50 mmol/L REFERENCE : CNREA8 Cancer Research. (Public Ledger Building, Suit 816, 6th & Chestnut Sts., Philadelphia, PA 19106) V.1- 1941- Volume(issue)/page/year: 25,980,1965
TYPE OF TEST : Cytogenetic analysis TEST SYSTEM : Rodent - hamster Fibroblast DOSE/DURATION : 16 gm/L/24H REFERENCE : MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)
TYPE OF TEST : Cytogenetic analysis ROUTE OF EXPOSURE : Oral TEST SYSTEM : Rodent - mouse DOSE/DURATION : 100 gm/kg/5D (Continuous) REFERENCE : CYTOAN Cytologia. (Japan Pub. Trading Co. (USA), 1255 Howard St., San Francisco, CA 94103) V.1- 1929- Volume(issue)/page/year: 52,877,1987
TYPE OF TEST : DNA dama
TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Intraplacental SPECIES OBSERVED : Human - woman DOSE : 1600 mg/kg SEX/DURATION : female 16 week(s) after conception TOXIC EFFECTS : Reproductive - Fertility - abortion REFERENCE : BMJOAE British Medical Journal. (British Medical Assoc., BMA House, Tavistock Sq., London WC1H 9JR, UK) V.1- 1857- Volume(issue)/page/year: 1,28,1971
TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Intrauterine SPECIES OBSERVED : Primate - monkey DOSE : 6 gm/kg SEX/DURATION : female 18 week(s) after conception TOXIC EFFECTS : Reproductive - Fertility - abortion REFERENCE : IJEBA6 Indian Journal of Experimental Biology. (Publications & Information Directorate, CSIR, Hillside Rd., New Delhi 110 012, India) V.1- 1963- Volume(issue)/page/year: 12,372,1974
TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Intraplacental SPECIES OBSERVED : Human - woman DOSE : 1400 mg/kg SEX/DURATION : female 16 week(s) after conception TOXIC EFFECTS : Reproductive - Fertility - abortion REFERENCE : OBGNAS Obstetrics and Gynecology. (Elsevier Science Pub. Co., Inc., 52 Vanderbilt Ave., New York, NY 10017) V.1- 1953- Volume(issue)/page/year: 43,765,1974
TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Intraplacental SPECIES OBSERVED : Human - woman DOSE : 1600 mg/kg SEX/DURATION : female 16 week(s) after conception TOXIC EFFECTS : Reproductive - Fertility - abortion REFERENCE : BJCPAT British Journal of Clinical Practice. (Medical News Group, 1 Bedford St., London WC2E 9HD, UK) V.10(10)- 1956- Volume(issue)/page/ye
其他信息
- Alfa Aesar:尿素,ACS,99.0-100.5% Urea, ACS, 99.0-100.5%(57-13-6)
- 食品添加剂最大允许使用量最大允许残留量标准:添加剂中文名称 允许使用该种添加剂的食品中文名称 添加剂功能 最大允许使用量(g/kg) 最大允许残留量(g/kg) 尿素 食品 食品工业用加工助剂 / 一般应在制成最后成品之前出去,有规定食品中残留量的除外
- 方法二:其制备方法是将经过净化的氨与二氧化碳按摩尔比2.8~4.5混合进入合成塔,塔内压力为13.8~24.6 MPa,温度为180~200℃,反应物料停留时间为25~40min,得到含过剩氨和氨基甲酸铵的尿素溶液,经减压降温,将分离出氨和氨基甲酸铵后的脲液蒸发到99.5%以上,然后在造粒塔造粒得到尿素成品。
- 所属类别二:农药中间体: 杀菌剂中间体: 脂肪族类杀菌剂
- 所属类别三:食品添加剂: 小麦粉、淀粉改质剂: 酵母养料
- 方法三:尿素中哺乳动物体内蛋白质代谢的最终产物。1922年,在德国实现了用
- 毒性:GRAS(FDA§184.1923,2000)。 LD 50 14300mg/kg(大鼠,经口)。 可以使用,胶姆糖胶中不超过3%不致有毒(FAO/WHO,2001)。
- 用途六:酵母食料;胶姆糖组织改进剂。GB2760-90列为加工助剂。用于含醇饮料、明胶制品、葡萄酒、酵母发酵性焙烤制品。
- 含量分析:准确称取试样约0.5g,溶于10%硫酸液中并定容至l00ml。取该液5.0ml放入长颈燃烧瓶中,加硫酸试液(TS-240)l0ml,小心加热至不再蒸发出气体。小心煮沸10min,冷却后小心加水40ml。再冷却后放入一蒸汽蒸馏器中。加10mol/LNaOH液50ml,在将蒸汽送经混合液的条件下,小心蒸馏1h。将馏出液约50ml收集于盛有40mL 4%(W/V)硼酸液的收集瓶中。加甲基红/甲烯蓝试液(TS-150)0.25ml,用0.1mol/L盐酸滴定。同时作一空白滴定。每毫升0.1 mol/L盐酸相当于尿素(CH 4 N 2 O)3.003mg。
- 尿素价格(试剂级):更新日期 产品编号 产品名称 包装 价格 2011/08/23 10023218 脲;尿素;碳酰二胺 500g 12.4元 2011/08/23 100232193 脲;尿素;碳酰二胺 25kg/袋 420元 2011/08/23 10023228 脲;尿素;碳酰二胺 500g 11元
- 鉴别试验:溶解性 易溶于水,溶于乙醇(OT-42)。 硝酸沉淀试验试样0.1g溶于水,加浓硝酸1ml。应有白色结晶性沉淀产生。 呈色反应 于试管中取试
- 用途三:用于分离氮的氧化物和亚硝酸及色层分析,也用作生物培养剂
- 方法一:用二氧化碳和氨在高温、高压下合成氨基甲酸铵,经分解、吸收转化后,结晶,分离、干燥而成。
- Acros Organics:尿素 Urea, DNAse, RNAse and Protease free, for molecular biology, 99.5%(57-13-6)
- 下游产品:4-苯基-2-羟基嘧啶-5-羧酸 --> 2-羟基嘧啶-5-羧酸乙酯 --> 粘合剂 104T/C --> 霜脲氰 --> 餐具洗洁精 --> 卡巴胆碱 --> 缩二脲 --> 活性黑KN-BN --> 二氯异氰尿酸钠(C3Cl2N3NaO3) --> 5-尿嘧啶甲酸乙酯 --> 颜料黄 65 --> 2,6-二氯-4,8-二哌啶子基嘧啶并[5,4-D]嘧啶 --> 可降解纺织染整整理剂 --> 1,5-二氢嘧啶并[5,4-D]嘧啶-2,4,6,8-(3H,7H)-四酮 --> 直接耐晒黑G --> 氨基模塑料 --> 冲施肥 --> 呋喃西林 --> 烯丙基脲 --> ZR-01 阻燃剂 --> 1-苯基氨基脲 --> 2,4-二氯噻吩并[3,2-D]嘧啶 --> 2,4-二氯噻吩并[3
- 图谱信息:尿素(57-13-6)质谱(MS) 尿素(57-13-6)红外图谱(IR1) 尿素(57-13-6)核磁图( 1 HNMR) 尿素(57-13-6)Raman光谱 尿素(57-13-6)红外图谱(IR2)