Log In Sign up
The largest database of trusted experimental protocols

Urea nh2conh2

Manufactured by Merck Group
Visit Supplier
Sourced in China

Urea (chemical formula NH2CONH2) is a common laboratory chemical used in various applications. It is a colorless, crystalline solid that is highly soluble in water. Urea's core function is as a nitrogen source and as a denaturing agent for proteins.

Automatically generated - may contain errors

Lab products found in correlation

Potassium hydroxide koh, by Merck Group (2 mentions) Orion 8102bnuwp, by Thermo Fisher Scientific (1 mentions) Sodium sulfide nonahydrate, by Merck Group (1 mentions) Orion star a214, by Thermo Fisher Scientific (1 mentions) Oleylamine, by Merck Group (1 mentions) Copper 2 acetylacetonate cu acac 2, by Merck Group (1 mentions) Dicyandiamide, by Merck Group (1 mentions) Methanol ch3oh, by Thermo Fisher Scientific (1 mentions) Polyvinylidene difluoride pvdf, by Merck Group (1 mentions) Hydrochloric acid (hcl), by Merck Group (1 mentions) Sodium hydroxide (naoh), by Merck Group (1 mentions) Ferric nitrate nonahydrate, by Merck Group (1 mentions) Tellurium powder, by Merck Group (1 mentions) Zinc powder, by Merck Group (1 mentions)

Spelling variants of this product

Urea (1227 citations) NH2CONH2 (5 citations)

7 protocols using urea nh2conh2

1

Betanin Extraction from Beetroot Waste

Check if the same lab product or an alternative is used in the 5 most similar protocols
The reagents used in the preparation of DES were analytical grade. Urea (NH2CONH2) was provided by Sigma-Aldrich (Sigma-Aldrich Química S de RL. de C.V., Toluca, México); the magnesium chloride (MgCl2·6H2O), HCl, and NaOH were provided by Fermont (Fermont Productos Químicos Monterrey, México).
The 5kg of beetroot (Beta vulgaris) waste used in this research was provided by a Mexican beetroot juice manufacturer (México city, México). The beetroot waste included peel and pulp from var. red cloud. The water content of the beetroot waste was determined as 550 ± 17 mg/g. The waste was distributed and stored in plastic bags of 100 g at 0 °C for later use. The loss of water from the thawed waste was found to be 533 ± 17 mg/g, indicating a 3.2% loss of water.
Hernández-Aguirre O.A., Muro C., Hernández-Acosta E., Alvarado Y, & Díaz-Nava M.D. (2021). Extraction and Stabilization of Betalains from Beetroot (Beta vulgaris) Wastes Using Deep Eutectic Solvents. Molecules, 26(21), 6342.
+ Open protocol
+ Expand
2

Synthesis of La-RE-FeO3 Perovskites

Check if the same lab product or an alternative is used in the 5 most similar protocols
La(NO3)3·6H2O (99.9%), Nd(NO3)3·6H2O (99.9%), Gd(NO3)3·6H2O (99.9%), Yb(NO3)3·6H2O (99.9%),
Sm(NO3)3·6H2O (99.9%), Ho(NO3)3·6H2O (99.9%), and Er(NO3)3·6H2O (99.9%) were obtained from
Alfa Aesar, while Fe(NO3)3·9H2O (98%) and urea (NH2CONH2) (99–100.5%)
were purchased from Sigma Aldrich. KOH (85%, pellets) was purchased
from Fisher Scientific. The synthesis of LaxRE1–xFeO3 (RE
= Nd, Sm, Gd, Ho, Er, Yb, and Y) was undertaken by placing 5 mL of
0.4 M Fe(NO3)3 in a 40 mL Teflon-lined steel
autoclave, to which was added the required stoichiometric amounts
of 0.4 M RE(NO3)3 and 0.4 M La(NO3)3. After this, 4.5 g of KOH was added to the mixture
(∼60% fill) and homogenized by stirring for 30 min before being
allowed to cool to room temperature. Finally, 1.5 g of urea was added
with further stirring and the reactant solution was sealed inside
the autoclave and heated for 48 h at 240 °C. After cooling to
room temperature, the as-produced powders were washed using deionized
water before being dried in air at 80 °C. The washed and dried
materials were then gently ground using a pestle and mortar before
further study.
Jia L., Lloyd M.D., Lees M.R., Huang L, & Walton R.I. (2023). Limits of Solid Solution and Evolution of Crystal Morphology in (La1–xREx)FeO3 Perovskites by Low Temperature Hydrothermal Crystallization. Inorganic Chemistry, 62(11), 4503-4513.
+ Open protocol
+ Expand
3

Artificial Saliva Preparation for Dental Research

Check if the same lab product or an alternative is used in the 5 most similar protocols
To maintain an environment similar to the oral environment, the bovine teeth used in the experiments were placed in artificial saliva. The artificial saliva contained 0.4 g of sodium chloride (NaCl; Daejung, Siheung, Korea), 0.4 g of potassium chloride (KCl; Daejung), 0.795 g of calcium chloride dihydrate (CaCl 2•2H2O, powder; Daejung), 0.78 g of sodium phosphate monobasic dihydrate (NaH2PO4•2H2O; Daejung), 0.005 g of sodium sulfide nonahydrate (Na 2S•9H2O; Sigma-Aldrich), 1.0 g of urea (NH2CONH2; Sigma-Aldrich), and 1,000 mL of distilled water.
Sodium hydroxide (NaOH, Daejung) was gradually added to the solution containing the above reagents, and the resulting solution was mixed using a magnetic stir bar. During mixing, the pH was maintained at 6.75 using a pH meter (Orion STAR A214, Thermo Scientific, Singapore) and the attached electrode (Orion 8102BNUWP, Thermo Fisher Scientific, Beverly, MA, USA).
Park S.A., Son J., Kim A.J., Oh S, & Bae J.M. (2024). Effect of adhesive components in experimental fluoride varnish on fluoride release within 30 days in vitro study. Dental materials journal, 43(2).
+ Open protocol
+ Expand
4

Synthesis of Nickel Tellurite Compound

Check if the same lab product or an alternative is used in the 5 most similar protocols
Nickel nitrate (Ni(NO3)2⋅6H2O, 98%, Alfa Aesar), telluric acid (H6O6Te, 98%, Sigma-Aldrich), urea (NH2CONH2, 99.0–100.5%, Sigma-Aldrich), absolute ethanol (EtOH, 99.5%, ETAX), and deionized water were used in the present work. All reactants were used as received, without further purification.
Fernández-Catalá J., Kistanov A.A., Bai Y., Singh H, & Cao W. (2023). Theoretical prediction and shape-controlled synthesis of two-dimensional semiconductive Ni3TeO6. Npj 2d Materials and Applications, 7(1), 48.
+ Open protocol
+ Expand
5

Copper-Bipyridine Complex Synthesis

Check if the same lab product or an alternative is used in the 5 most similar protocols
The following chemicals were purchased and used as-received without further purification: Copper(II) chloride dihydrate (CuCl2·2H2O, ACS grade, Sigma Aldrich), 2,2,-bipyridine (C10H8N2, reagent grade, Sigma Aldrich), oxalic acid (HO2CCO2H, reagent grade, Alfa Aesar), urea (NH2CONH2, ACS grade, Sigma Aldrich), dicyandiamide (NH2C( = NH)NHCN, ACS grade, Sigma Aldrich), copper(II) acetylacetonate (Cu(acac)2, ACS reagent, Sigma Aldrich), oleylamine (CH3(CH2)7CH = CH(CH2)8NH2, ≥ 98%, Sigma Aldrich), ethanol (C2H5OH, HPLC grade, Fisher Scientific), methanol (CH3OH, HPLC grade, Fisher Scientific), deionized water (18.2 MΩ) was collected from an ELGA PURELAB flex apparatus.
Xie P., Ding J., Yao Z., Pu T., Zhang P., Huang Z., Wang C., Zhang J., Zecher-Freeman N., Zong H., Yuan D., Deng S., Shahbazian-Yassar R, & Wang C. (2022). Oxo dicopper anchored on carbon nitride for selective oxidation of methane. Nature Communications, 13, 1375.
+ Open protocol
+ Expand
6

MAX Phase Synthesis and Purification

Check if the same lab product or an alternative is used in the 5 most similar protocols
The MAX powder (Ti3AlC2) (98% purity) was
purchased from Luoyang Tongrun Info Technology Co., Ltd., China, and
hydrofluoric acid (HF) (40 wt %, Merck), deionized (DI) water, hydrochloric
acid (HCl) (37%, Merck), lithium fluoride (LiF) (99.98%, Merck), sodium
hydroxide (NaOH) (99%, Merck), potassium hydroxide (KOH) (99%, Merck),
dimethyl sulfoxide (DMSO) (C2H6OS) (99% purity,
Merck), poly(vinylidene difluoride) (PVDF), aqueous ammonia (NH3) (25%, Merck), urea (NH2CONH2) (Merck),
and poly(tetrafluoroethylene) (PTFE) ((C2F4)n) membrane (pore size, 100 nm) were purchased from Laisheng,
Haining, China, and used without further purification.
Munir S., Rasheed A., Rasheed T., Ayman I., Ajmal S., Rehman A., Shakir I., Agboola P.O, & Warsi M.F. (2020). Exploring the Influence of Critical Parameters for the Effective Synthesis of High-Quality 2D MXene. ACS Omega, 5(41), 26845-26854.
+ Open protocol
+ Expand
7

Synthesis of Photocatalytic Materials

Check if the same lab product or an alternative is used in the 5 most similar protocols
The chemicals utilized for the synthesis of the photocatalysts were of analytical grade and used without further treatment. All of the solutions were prepared in DI-water. Congo red [C32H24N6O6S2·2Na] (M.W. = 696.67 g mol−1), ferric nitrate nonahydrate [Fe(NO3)3·9H2O] (M.W. = 403.99 g mol−1, >97%), urea [NH2CONH2] (M.W. = 60.07 g mol−1, 99.5%) and potassium hydroxide [KOH] (M.W. = 56.11 g mol−1, >95%) were purchased from Merck. Zinc powder (M.W. = 65.38 g mol−1, >97%) and tellurium powder (M.W. = 127.38 g mol−1, 99.8%) were purchased from Sigma Aldrich Chemicals. Meanwhile, methyl orange [C14H14N3NaO3S] (M.W. = 327.33 g mol−1) and methylene blue [C16H18N3SCl] (M.W. = 319.85 g mol−1) were supplied by Beijing Chemical Reagent Limited Corporation in China.
Khurram R., Wang Z., Ehsan M.F., Peng S., Shafiq M, & Khan B. (2020). Synthesis and characterization of an α-Fe2O3/ZnTe heterostructure for photocatalytic degradation of Congo red, methyl orange and methylene blue. RSC Advances, 10(73), 44997-45007.
+ Open protocol
+ Expand

About PubCompare

Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.

We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.

However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.

Ready to get started?

Sign up for free.
Registration takes 20 seconds.
Available from any computer
No download required

Sign up now

Revolutionizing how scientists
search and build protocols!