hard cake like structure of poly-urethane is formed due to over reaction. solvent in DMF. how can we dissolve it?
We want to synthesize adipic acid. Can anybody tell me reaction catalyst and control conditions for AA synthesis and raw materials?
10 November 2018 3,952 3 View
We are using DMF as solvent for polyurethane synthesis for artificial leather. Can any body tell me sound velocity of DMF??
07 August 2018 6,730 0 View
we are going to make data base fora cid value quantification.our reaction contain polyol, adipic acid, and TIPT catalyst. we are intresting to find acid value with the passage of time. when acid...
31 December 2016 2,587 1 View
here threeftir spectrum are attached, 1st adipic acid (AA) 1000 PPM AQUEOUS SOLUTION 2ND PURE AA SOLID SAMPLE SPECTRUM 3RD OUR PRODUCT IN WHICH AA COnC. LESS THAN 1. WE are interesting to...
31 December 2016 5,156 0 View
Coaboxylic acid peak range in ATR FTIR and data base?
31 December 2016 457 8 View
I am puzzled about the properties of gelatin, when used for tissue-embedding. Hard gelatin can be melt again by temperatures about 40°C. Formalin-fixed gelatin is like crosslinked protein and...
07 August 2024 1,686 1 View
I need to do some experiment with it in liquid form.
07 August 2024 613 3 View
My collegue and I are having hard time to understand what is happening. Basically we have a tapping device that work with Arduino and a pneumatic pump. The pump allows the tapping of two...
04 August 2024 4,662 1 View
I work on MCF7 cell cell for anticaner purpose and I wa to do drug preperation the drug ( secondary metabolites extracted from Aspergillus) My question which solvent is better with these secodary...
03 August 2024 4,725 2 View
Hello everyone, I need to dissolve stigmasterol for an animal experiment, but it hasn't dissolved in either DMSO or vegetable oil. Can anyone recommend the best solvent for stigmasterol?
01 August 2024 7,504 2 View
Suppose I am studying the construct of "Academic Motivation" (latent variable) in students, which is measured through three observed variables: "Intrinsic Motivation," "Extrinsic Motivation," and...
31 July 2024 3,913 6 View
I want to do 2,3-butanediol dehydrogenase(BDH) enzyme purification to confirm its activity for 2,3-butanediol. Before that, I need to confirm which N or C terminal tagging is better for enzyme...
28 July 2024 366 3 View
I run mechanochemical reactions that involves the use of a large amount of catalyst (1:1 molar ratio to the reactant). When I try to understand the effect of amount of catalyst on the reaction, I...
23 July 2024 9,938 1 View
Why methanol and sulphuric acid, used in the analysis of polyhydroxyalkanoates (PHA) methyl esters by GC-MS? Additionally, why do we typically use non-polar solvents in GC-MS?
22 July 2024 1,210 2 View
Is it the best optimization ratio based on experiments?
22 July 2024 8,170 0 View