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Urea

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Urea is a chemical compound with the formula CO(NH2)2. It is a colorless, crystalline solid that is highly soluble in water. Urea is a common laboratory reagent used in a variety of chemical and biological applications, primarily for its ability to denature proteins and disrupt molecular interactions.

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Lab products found in correlation

Sodium hydroxide (naoh), by Nanjing Chemical Reagent (2 mentions) Acetic acid ch3cooh, by Nanjing Chemical Reagent (1 mentions) Sodium hydroxide naoh, by Nanjing Chemical Reagent (1 mentions) Methyl methacrylate, by Nanjing Chemical Reagent (1 mentions) N butyl acrylate, by Nanjing Chemical Reagent (1 mentions) Methacrylic acid, by Nanjing Chemical Reagent (1 mentions) Filter paper, by Thermo Fisher Scientific (1 mentions) Citric acid, by Nanjing Chemical Reagent (1 mentions) Ethanol, by Nanjing Chemical Reagent (1 mentions) Hydrochloric acid (hcl), by Nanjing Chemical Reagent (1 mentions) Acetic acid, by Nanjing Chemical Reagent (1 mentions) Ethyl acetate, by Nanjing Chemical Reagent (1 mentions)

5 protocols using urea

1

Poplar-Based Eco-Friendly Hydrogel Synthesis

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Poplar powder was provided by Qingdao Ruilibo International Trade Co., Ltd. (Qingdao, China). The poplar pulp was used after removing lignin and hemicellulose and complete drying under vacuum at 75 °C for 24 h. Bentonite was supplied by Shenzhen Jintenglong Industrial Co., Ltd. (Shenzhen, China). Sodium chlorite (NaClO2, 80%), acetic acid (CH3COOH, 36%), sodium hydroxide (NaOH, 96%), and urea (99%) were of analytical grade and purchased from Nanjing Chemical Reagent Co., Ltd. (Nanjing, China). 1,4-Butanediol diglycidyl ether (BDE, 97%) was obtained from Guangdong Weng Jiang Chemical Reagent Co., Ltd. (Shaoguan, China). Deionized water was gained from a laboratory water purifying system (Hitech Sciencetool, Hitech Instruments Co., Ltd.). All of the chemical reagents were used as received unless otherwise specified.
Wang S., Yu L., Wang S., Zhang L., Chen L., Xu X., Song Z., Liu H, & Chen C. (2022). Strong, tough, ionic conductive, and freezing-tolerant all-natural hydrogel enabled by cellulose-bentonite coordination interactions. Nature Communications, 13, 3408.
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2

Poly(methyl methacrylate-co-butyl acrylate) Synthesis

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The CW in the form of flakes was purchased from Shanghai Macklin Biochemical Co., Ltd. (Shanghai, China) Methyl methacrylate (MMA, AR), n-butyl acrylate (BA, CP), methacrylic acid (MAA, CP), and urea (AR) were purchased from Nanjing Chemical Reagent Co., Ltd., Nanjing, China. Sodium dodecylbenzene sulfonate (SDBS, AR) was obtained from Chengdu Kelong Chemical Reagent Co., Ltd., Chengdu, China. Potassium persulfate (KPS; Chemical pure) was supplied by Sinopharm Chemical Reagent Co., Ltd. (Shanghai, China) Nonyl phenyl polyoxyethylene ether-10 (OP-10, CP) was obtained from Hebei Xingtai Kewang Auxiliary Agent Co., Ltd., Xingtai, China. The urea granules (46.6 wt.% of nitrogen and 2.00–4.75 mm in diameter) were purchased by Shandong Luxi Fertilizer Co., Ltd., Liaocheng, China.
Ge C., Xu X., Ma F., Zhou J, & Du C. (2022). Biomimetic Modification of Water-Borne Polymer Coating with Carnauba Wax for Controlled Release of Urea. International Journal of Molecular Sciences, 23(13), 7422.
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3

Cellulose-based Filter Paper Synthesis

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Filter paper with a base weight of 103 g/m2 and a diameter of 18.5 cm was purchased from Fisher Scientific International, Inc. (Pittsburgh, UK). The paper was made from cellulose fibres with a degree of polymerization (DP) of approximately 830. Sodium hydroxide, urea and zinc oxide were purchased from Nan Jing chemical reagent Co. LTD. (Nan Jing, China). All of the chemicals were used as received.
Jiao L., Ma J, & Dai H. (2015). Preparation and Characterization of Self-Reinforced Antibacterial and Oil-Resistant Paper Using a NaOH/Urea/ZnO Solution. PLoS ONE, 10(10), e0140603.
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4

Facile Synthesis of Functionalized Nanoparticles

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The citric acid (CA), urea,
dimethylformamide (DMF), acetic acid (AA), ethanol, sodium borohydride
(NaBH4), sodium hydroxide, and hydrochloric acid were purchased
from Nanjing Chemical Reagent Co., Ltd. The dialysis bag (MD44-1000D)
and the microporous membrane (0.22 μm) were obtained from Beijing
Solarbio Science & Technology Co., Ltd. (China). The ultrapure
water was prepared by a laboratory pure water machine (Unique-R20,
RSJ Technology Co., Ltd.). All of the above materials were used directly
without further purification.
Huo X., Shen H., Liu R, & Shao J. (2021). Solvent Effects on Fluorescence Properties of Carbon Dots: Implications for Multicolor Imaging. ACS Omega, 6(40), 26499-26508.
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5

Formulating Waterborne Acrylic Coatings

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The 37.0% formaldehyde solution (Mw: 30.03 g/mol, CAS No.: 50-00-0), urea (Mw: 60.06 g/mol, CAS No.: 57-13-6), triethanolamine (Mw: 149.19 g/mol, CAS No.: 102-71-6), and ethyl acetate (Mw: 88.11 g/mol, CAS No.: 141-78-6) were provided by Nanjing Chemical Reagent Co., Ltd., Nanjing, China. Dulux waterborne acrylic resin was offered by Akzo Nobel Paints (Shanghai) Co., Ltd., Shanghai, China. Sodium dodecyl benzene sulfonate (Mw: 348.48 g/mol, CAS No.: 25155-30-0) was supplied by Beichen District Fangzheng Reagent Factory, Tianjin, China. Octanol (Mw: 130.23 g/mol, CAS No.: 111-87-5) was offered by Yatai United Chemical Co., Ltd., Wuxi, China. Citric acid (Mw: 210.14 g/mol, CAS No.: 5949-29-1) was provided by Beilian Fine Chemical Development Co., Ltd., Tianjin, China. Ethanol (Mw: 46.07 g/mol, CAS No.: 64-17-5) was provided by Outuopu Biotechnology Co., Ltd., Hangzhou, China. Tilia europaea (100 mm × 65 mm × 4 mm, color uniformity, after sanding pretreatment) was offered by Yihua Lifestyle Technology Co., Ltd., Guangdong, China.
Yan X., Tao Y, & Qian X. (2020). Preparation and Optimization of Waterborne Acrylic Core Microcapsules for Waterborne Wood Coatings and Comparison with Epoxy Resin Core. Polymers, 12(10), 2366.
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