Is there a way to test for an imidazoline ring closure ratio without using an FTIR?

06 February 2018 1 9K Report

I don't have an FTIR, so I was wondering if there was a titration or alternative to checking for the ration of open rings to closed rings.

Isam Eldin Hussein Elgailani

Dear Sir. Concerning your issue about the test for an imidazoline ring closure ratio. I think the following below links may help you in your analysis:

https://www.google.ch/patents/WO2016073564A1?cl=en https://www.jstage.jst.go.jp/article/jos/56/5/56_5_211/_pdf

https://link.springer.com/article/10.1007/BF02678810

Thanks

More Shea Dreaden's questions See All

How do I know if I have the HPLC Calculations and injection volumes right?

I have a method that asks me to take 300 mg of Active A and put it into 100 ml of solvent as stock solution A. From stock solution A, I take 10 ml of that solution and dilute again to working...

10 November 2018 3,259 0 View

I'm trying to quantify an active on HPLC, but I'm getting a lower result than I should. What should I check?

I have run a 5 cal curve. 21.5, 43, 86,129, and 172 mg/100 ml of active in methanol. My sample should read 29-30 mg/100 ml. I get about 3 mg/100 ml every time. What's wrong? I'm afraid I'm...

03 April 2018 7,575 11 View

How to make Boehm titration ?

Hello Everyone, While doing Boehm titration, We use nahco3 in order to determine carboxylic acids. Then the mixture was agitated. After a while, the solution was filtred and HCl was added. After a...

29 July 2024 4,048 4 View

What is the fastest method should i use to determine TiO2 content for thermoplastic without using any high tech instrument?

I currently conduct a hotmelt thermoplastic. I want to find the tio2 content in the product. As far as I know, titration method can be used since it is available for me. May I know what is the...

07 July 2024 5,264 3 View

What is the effect of moisture of the atmosphere on titer of Karl-Fischer reagent (one-component)?

I have a Karl-Fischer reagent (for volumetric titration, which is a one-component reagent) with a titer of 5mg/ml. All references unanimously say the Karl-Fischer solution loses its capability...

02 July 2024 5,044 3 View

How do I determine the mg of ascorbic acid equivalent to 1.0 mL of standard indophenol solution?

Hello everyone. Could you help me with the following problem. I am going to determine ascorbic acid in capsules using an AOAC method. The method gives the following equation: mg ascorbic...

24 June 2024 789 1 View

Where is this method for determining the CO2 content in drinking water or thermo-mineral medicinal waters in the field?

In a beaker, take 60 mL of water from the source (under a stream), pour it into an Erlenmeyer flask, add a couple of crystals of K-Na-tartrate and 5 drops of phenolphthalein, and then titrate with...

17 June 2024 1,609 1 View

Where is this method for determining the content of H2S in drinking water in the field?

Take 70 mL of water from the source (under a stream) in a beaker, pour into an Erlenmeyer flask, add 2 mL of starch solution and immediately titrate with iodine solution in KJ until a blue color...

17 June 2024 1,002 2 View

What could dissolve MgO nanoparticles over time?

I have a set-up were I have a bottle with water (DI water, 0.8uS/cm). To that bottle I have added some MgO nanopowder, at a concentration of ~ 0.08mg/ml. It appears that the white powder is...

04 June 2024 9,789 4 View

Can I dilute the serum sample further than stated in the manual as long as the analyte concentration remains within the KIT linear range?

I want to measure a protein in serum using an ELISA kit. This kit allows serum samples to be diluted 200 to 3200 times, but I want to use this kit to titrate higher concentrations of protein. Can...

03 June 2024 4,937 0 View

Can you describe the process for initiating and titrating clozapine therapy in a patient with treatment-resistant schizophrenia?

Optimizing Clozapine Therapy: Overcoming Challenges and Enha... Can you describe the process for initiating and titrating clozapine therapy in a patient with treatment-resistant schizophrenia?

12 May 2024 6,010 2 View

How to measure the bisulfite concentration?

Does anyone know the exact BS concentration of the Zymo DNA methylation gold kit? or is there anyway to measure the BS concentration by titration? Thanks.

05 May 2024 8,848 1 View