 |
尿素 [57-13-6]
-
英文名：Urea
- 別名：脲，碳酰二胺
- CAS號(hào)：57-13-6 分子式：CH4N2O 分子量：60.06
P41668-100g 尿素 [57-13-6] 99.99% metals basis 100g 300.00
P41661-25g 尿素 [57-13-6] 99.99% metals basis 25g 96.00
P41660-500g 尿素 [57-13-6] ACS, ≥99.5% (T) 500g 75.00
P41664-500g 尿素 [57-13-6] AR 500g 46.00 促銷價(jià):29.90
P41669-100g 尿素 [57-13-6] AR 100g 25.00 促銷價(jià):16.25
P41669-500g 尿素 [57-13-6] for electrophoresis 500g 698.00
P41667-500g 尿素 [57-13-6] for molecular biology, ≥99% 500g 283.00
P41666-100g 尿素 [57-13-6] for molecular biology, ≥99% 100g 200.00
P41665-250g 尿素 [57-13-6] Ph. Eur., BP, USP, 99.0-100.5% 250g 55.00
P41664-50mg 尿素 [57-13-6] 分析標(biāo)準(zhǔn)品,Purity≥98% 50mg 113.00 促銷價(jià):79.10
P41666-500g 尿素 [57-13-6] 藥用 500g 65.00
P41661-25g 尿素 [57-13-6] 99.99% metals basis 25g 96.00
P41660-500g 尿素 [57-13-6] ACS, ≥99.5% (T) 500g 75.00
P41664-500g 尿素 [57-13-6] AR 500g 46.00 促銷價(jià):29.90
P41669-100g 尿素 [57-13-6] AR 100g 25.00 促銷價(jià):16.25
P41669-500g 尿素 [57-13-6] for electrophoresis 500g 698.00
P41667-500g 尿素 [57-13-6] for molecular biology, ≥99% 500g 283.00
P41666-100g 尿素 [57-13-6] for molecular biology, ≥99% 100g 200.00
P41665-250g 尿素 [57-13-6] Ph. Eur., BP, USP, 99.0-100.5% 250g 55.00
P41664-50mg 尿素 [57-13-6] 分析標(biāo)準(zhǔn)品,Purity≥98% 50mg 113.00 促銷價(jià):79.10
P41666-500g 尿素 [57-13-6] 藥用 500g 65.00
| 訂貨編號(hào) | 商品名稱 | 規(guī)格 | 包裝 | 單價(jià) | 促銷價(jià) | 會(huì)員價(jià) | 數(shù)量 |
| P41668-100g | 尿素 [57-13-6] | 99.99% metals basis | 100g | 300.00 | 300.00 | 登錄可見(jiàn) |
P41668-100g 尿素 [57-13-6] 99.99% metals basis 100g 300.00
|
| P41661-25g | 尿素 [57-13-6] | 99.99% metals basis | 25g | 96.00 | 96.00 | 登錄可見(jiàn) |
P41661-25g 尿素 [57-13-6] 99.99% metals basis 25g 96.00
|
| P41660-500g | 尿素 [57-13-6] | ACS, ≥99.5% (T) | 500g | 75.00 | 75.00 | 登錄可見(jiàn) |
P41660-500g 尿素 [57-13-6] ACS, ≥99.5% (T) 500g 75.00
|
| P41664-500g | 尿素 [57-13-6] | AR | 500g | 46.00 |
29.90
|
登錄可見(jiàn) |
P41664-500g 尿素 [57-13-6] AR 500g 46.00 促銷價(jià):29.90
|
| P41669-100g | 尿素 [57-13-6] | AR | 100g | 25.00 |
16.25
|
登錄可見(jiàn) |
P41669-100g 尿素 [57-13-6] AR 100g 25.00 促銷價(jià):16.25
|
| P41669-500g | 尿素 [57-13-6] | for electrophoresis | 500g | 698.00 | 698.00 | 登錄可見(jiàn) |
P41669-500g 尿素 [57-13-6] for electrophoresis 500g 698.00
|
| P41667-500g | 尿素 [57-13-6] | for molecular biology, ≥99% | 500g | 283.00 | 283.00 | 登錄可見(jiàn) |
P41667-500g 尿素 [57-13-6] for molecular biology, ≥99% 500g 283.00
|
| P41666-100g | 尿素 [57-13-6] | for molecular biology, ≥99% | 100g | 200.00 | 200.00 | 登錄可見(jiàn) |
P41666-100g 尿素 [57-13-6] for molecular biology, ≥99% 100g 200.00
|
| P41665-250g | 尿素 [57-13-6] | Ph. Eur., BP, USP, 99.0-100.5% | 250g | 55.00 | 55.00 | 登錄可見(jiàn) |
P41665-250g 尿素 [57-13-6] Ph. Eur., BP, USP, 99.0-100.5% 250g 55.00
|
| P41664-50mg | 尿素 [57-13-6] | 分析標(biāo)準(zhǔn)品,Purity≥98% | 50mg | 113.00 |
79.10
|
登錄可見(jiàn) |
P41664-50mg 尿素 [57-13-6] 分析標(biāo)準(zhǔn)品,Purity≥98% 50mg 113.00 促銷價(jià):79.10
|
| P41666-500g | 尿素 [57-13-6] | 藥用 | 500g | 65.00 | 65.00 | 登錄可見(jiàn) |
P41666-500g 尿素 [57-13-6] 藥用 500g 65.00
|
化學(xué)性質(zhì)
白色四方棱形狀結(jié)晶或粉末。有氨的氣味和咸味。加熱溫度高于其熔點(diǎn)時(shí)則分解成縮二脲、氨和三聚氰酸。1g溶于1ml水、10ml95%乙醇、1ml95%沸乙醇、20ml無(wú)水乙醇、6ml甲醇和2ml甘油。溶于濃鹽酸，幾乎不溶于乙醚和氯仿。10%水溶液的pH為7.23。有刺激性。 熔點(diǎn) 132-135 °C(lit.) 密度 1.335 g/mL at 25 °C(lit.) 折射率 n20/D 1.40 溶解度 H2O: 8 M at 20 °C
質(zhì)量標(biāo)準(zhǔn)
| GB/T 696-94 |
| 項(xiàng)目Item 分析純 化學(xué)純 |
| (AR) (CP) |
| 含量(H2NCONH2)Assay,% ≥ 99.0 99.0 |
| 澄清度試驗(yàn)Clarty 合格 合格 |
| 水不溶物lnsoluble matter in water,% ≤ 0.005 0.02 |
| 灼燒殘?jiān)?以硫酸鹽計(jì))Ignition residue,% ≤ 0.01 0.02 |
| 氯化物(Cl)Chloride,% ≤ 0.0003 0.001 |
| 硫酸鹽(SO4)Sulfale,% ≤ 0.001 0.005 |
| 氨(NH3)Ammonia,% ≤ 0.005 0.005 |
| 鐵(Fe)Iron,% ≤ 0.0002 0.0005 |
| 重金屬(以Pb計(jì))Heavy metals,% ≤ 0.0002 0.005 |
| 縮二脲(C2H5N3O2)Blured,% ≤ 0.2 0.4 |
| 品級(jí)Grade ACS級(jí) |
| (ACS, ≥99.5% (T)) |
| 外觀Appearance White Powder |
| 紅外光譜Infrared spectrometry Conforms to Structure |
| 純度Purity(GC) ≥99.5% (T) |
| 甲醛formaldehyde (HCHO) ≤0.005% |
| 縮二脲biuret ≤0.1% |
| 灼燒殘?jiān)黂esidue on ignition(as SO4) ≤0.01% |
| 熔點(diǎn)Melting point 132-135 °C |
| anion traces by ICP Atomic emission |
| 氯chloride (Cl-): ≤5 ppm |
| 硫酸根sulfate (SO42-): ≤10 ppm |
| cation traces by ICP Atomic emission |
| Ca: ≤10 ppm |
| Cd: ≤5 ppm |
| Co: ≤5 ppm |
| Cr: ≤5 ppm |
| Cu: ≤5 ppm |
| Fe: ≤5 ppm |
| K: ≤50 ppm |
| Mg: ≤5 ppm |
| Mn: ≤5 ppm |
| Na: ≤50 ppm |
| Ni: ≤5 ppm |
| Pb: ≤5 ppm |
| Zn: ≤5 ppm |
| 99.99% metals basis: |
| 外觀Appearance 無(wú)色至白色結(jié)晶 |
| X-射線衍射分析X-Ray Diffraction Conforms to standard |
| 純度Purity ≥99.99% |
| ICP: Confirms Na and S Components Confirmed |
| 干燥損失Loss on ignition <0.5% (1 Hours, 1100 °C) |
| 鐵Iron (Fe) Pass |
| 銨Ammonium (NH4) ≤0.005 % |
| Sulfite and Thiosulfite ≤0.1 % |
| 金屬雜質(zhì)Trace Metal Analysis ≤100.0 ppm by ICP and AA Combined |
| (Al、Ba、B、Ca、Cr、Fe) |
| 金屬雜質(zhì)Trace Metal Analysis ≤100.0 ppm by Atomic Absorption |
| (Li、K、Ru、Cs) |
| 品級(jí)Grade 電泳級(jí) |
| (for electrophoresis) |
| 鉛lead by ICP-atomic emission ≤ 5 ppm |
| 鐵iron by ICP-atomic emission ≤ 1 ppm |
| 離子選擇性電極測(cè)試specific ion electrode test ≤ 0.005% ammonia |
| 電泳測(cè)試suitability test suitable for electrophoresis |
| 紫外吸收uv absorbance ≤0.06 AT 260 NM (C= 5 M, H2O) |
| 紫外吸收uv absorbance ≤0.06 AT 280 NM (C= 5 M, H2O) |
| 純度Purity ≥98% |
| 品級(jí)Grade 細(xì)胞培養(yǎng)級(jí) |
| (for cell culture) |
| 外觀Appearance White Pellets |
| 紅外光譜Infrared spectrometry Conforms to Structure |
| 純度Purity( ≥99.0% |
| 水溶解試驗(yàn)solubility in water Colorless，Clear，100 mg/mL, H2O |
| 水分Water (by Karl Fischer) ≤3% |
| 細(xì)胞培養(yǎng)測(cè)試Cell Culture Test Pass |
| 品級(jí)Grade 分子生物學(xué)級(jí)，≥99% |
| (for molecular biology, ≥99%, powder) |
| 外觀appearance white powder |
| 水溶性solubility clear colorless solution |
| 鉛lead by ICP-atomic emission ≤ 5 ppm |
| 鐵iron by ICP-atomic emission ≤ 1 ppm |
| 銅copper by ICP-atomic emission ≤ 1 ppm |
| 氯chloride content ≤ 5 ppm |
| 氰酸cyanate content ≤ 10 ppm |
| DNA酶DNases, none detected |
| RND酶RNases, none detected |
| 蛋白酶proteases, none detected |
| 核酸內(nèi)切酶nickase,endonuclease detection none detected |
| 純度Purity ≥99% |
| 品級(jí)Grade 藥典級(jí) |
| (Ph. Eur., BP, USP, 99.0-100.5%) |
| 含量assay 99.0-100.5% (calc. on dry substance) |
| 堿反應(yīng)物質(zhì)alkalic reac. substances, complies |
| 殘留溶劑residual solvents, complies |
| 重金屬heavy metals (as Pb) ≤0.001% |
| 不溶物insoluble in ethanol ≤0.04% |
| 銨根ammonium (NH4) ≤0.05% |
| 縮二脲biuret(carbamylurea) ≤0.1% |
| 灼燒殘?jiān)黂esidue on ignition(as SO4) ≤0.1% |
| 干燥損失loss on drying, 105 °C, 1 h ≤1.0% |
| 熔點(diǎn)Melting point 132-135 °C |
| anion traces |
| 氯chloride (Cl-): ≤10 ppm |
| 硫酸根sulfate (SO42-): ≤50 ppm |
| 鐵Fe: ≤0.5 ppm |
危險(xiǎn)性質(zhì)
WGK Germany 1
RTECS號(hào) YR6250000
危險(xiǎn)品標(biāo)志 Xn
危險(xiǎn)類別碼 36/37/38-40
安全說(shuō)明 26-36
用途及存儲(chǔ)
分析中用以檢驗(yàn)銻和錫。測(cè)定鉛、鈣、銅、鎵、磷、碘化物和硝酸鹽。測(cè)定血液尿素氮時(shí)，配標(biāo)準(zhǔn)溶液，測(cè)定血清膽紅素。烴的分離。分析中用以分解氮的氧化物及亞硝酸。制備培養(yǎng)基。福林法測(cè)定尿酸時(shí)的穩(wěn)定劑，均相沉淀。
生產(chǎn)方法
用二氧化碳和氨在高溫、高壓下合成氨基甲酸銨，經(jīng)分解、吸收轉(zhuǎn)化后，結(jié)晶，分離、干燥而成。
密封干燥保存。
